Update CHANGELOG

.github/workflows/main.yml

@@ -1,50 +1,31 @@
 name: Build & Test
-on: [push, pull_request]
+
+on:
+  push:
+    branches:
+      - dev
+  pull_request:
+    branches:
+      - dev
+
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: macOS-latest
     steps:
-    - name: Check out source code
-      uses: actions/checkout@v1
-
+    - uses: actions/checkout@v1
     - name: Install Java Development Kit 1.8
       uses: actions/setup-java@v1
       with:
         java-version: 1.8
-
     - name: Build APK & Run small tests
       run: android/build.sh build
-
-    - name: Upload APK
-      uses: actions/upload-artifact@v2
-      with:
-        name: debug-apk
-        path: android/build/*apk
-
-    - name: Upload build outputs
-      uses: actions/upload-artifact@v2
-      with:
-        name: build
-        path: android/uhabits-android/build/outputs/
-
-  test:
-    needs: build
-    runs-on: macOS-latest
-    strategy:
-      matrix:
-        api-level: [23, 24, 25, 26, 27, 28, 29]
-    steps:
-    - name: Check out source code
-      uses: actions/checkout@v1
-
-    - name: Download previous build folder
-      uses: actions/download-artifact@v2
-      with:
-        name: build
-        path: android/uhabits-android/build/outputs/
-
     - name: Run medium tests
-      uses: ReactiveCircus/android-emulator-runner@v2
+      uses: ReactiveCircus/android-emulator-runner@v2.2.0
       with:
-        api-level: ${{ matrix.api-level }}
+        api-level: 29
         script: android/build.sh medium-tests
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v1
+      with:
+        name: Build
+        path: android/uhabits-android/build/outputs/

.gitignore

@@ -4,7 +4,6 @@
 *.perspectivev3
 *.swp
 *~.nib
-*.hprof
 .DS_Store
 ._.DS_Store
 .externalNativeBuild
@@ -17,7 +16,3 @@ captures
 local.properties
 node_modules
 *xcuserdata*
-*.sketch
-/design
-/releases
-/screenshots

CHANGELOG.md

@@ -1,23 +1,8 @@
 # Changelog
 
-### 2.0.0 (TBD)
+### 1.8.11 (Dev 29, 2020)
 
-* **New Features:**
-  * Track numerical habits (@iSoron, @namnl)
-  * Skip days without breaking streak (@KristianTashkov)
-  * Sort habits by status (@hiqua)
-  * Sort habits in reverse order (@iSoron)
-  * Add notes to habits (@recheej)
-  * Improve readibility of charts (@chennemann)
-  * Delay new day until 3am (@KristianTashkov)
-  * Export backups daily (@iSoron)
-* **Bug fixes:**
-  * Reset chart offset when switching scale (@alxmjo)
-  * Don't show reminders from archived habits (@KristianTashkov)
-  * Lapses on non-daily habits decrease the score too much (@iSoron)
-  * Update widgets at midnight (@KristianTashkov)
-* **Refactoring:**
-  * Convert files to Kotlin (@olegivo)
+* Fix theme issues on Xiaomi phones
 
 ### 1.8.10 (Nov 26, 2020)
 
@@ -25,7 +10,8 @@
 
 ### 1.8.9 (Nov 18, 2020)
 
-* Manage exceptions when activities don't exist to handle intents (#181)
+* Remove INTERNET permission
+* Manage exceptions for when activities don't exist to handle intents (#181)
 * MemoryHabitList: Inherit parent's order (#598)
 * Remove notification groups; revert to default system behavior
 * Remove SyncManager and Internet permission

README.md

@@ -1,10 +1,3 @@
-<a href="https://github.com/iSoron/uhabits/actions?query=workflow%3A%22Build+%26+Test%22">
-  <img src="https://github.com/iSoron/uhabits/workflows/Build%20&%20Test/badge.svg" />
-</a>
-<a href="https://github.com/iSoron/uhabits/releases">
-  <img src="https://img.shields.io/github/v/release/iSoron/uhabits" />
-</a>
-
 # Loop Habit Tracker
 
 Loop is a mobile app that helps you create and maintain good habits,

android/android-base/build.gradle

@@ -1,5 +1,4 @@
 apply plugin: 'com.android.library'
-apply plugin: 'kotlin-android'
 
 android {
     compileSdkVersion COMPILE_SDK_VERSION as Integer
@@ -7,8 +6,8 @@ android {
     defaultConfig {
         minSdkVersion MIN_SDK_VERSION as Integer
         targetSdkVersion TARGET_SDK_VERSION as Integer
-        buildConfigField 'int', 'VERSION_CODE', "$VERSION_CODE"
-        buildConfigField 'String', 'VERSION_NAME', "\"$VERSION_NAME\""
+        versionCode VERSION_CODE as Integer
+        versionName "$VERSION_NAME"
     }
 
     compileOptions {
@@ -29,5 +28,4 @@ dependencies {
     implementation "org.apache.commons:commons-lang3:3.5"
 
     annotationProcessor "com.google.dagger:dagger-compiler:$DAGGER_VERSION"
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$KOTLIN_VERSION"
 }

android/android-base/src/main/java/org/isoron/androidbase/AndroidBugReporter.java

@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase;
+
+import android.content.*;
+import android.os.*;
+import android.view.*;
+
+import androidx.annotation.NonNull;
+
+import java.io.*;
+import java.text.*;
+import java.util.*;
+
+import javax.inject.*;
+
+public class AndroidBugReporter
+{
+    private final Context context;
+
+    @Inject
+    public AndroidBugReporter(@NonNull @AppContext Context context)
+    {
+        this.context = context;
+    }
+
+    /**
+     * Captures and returns a bug report. The bug report contains some device
+     * information and the logcat.
+     *
+     * @return a String containing the bug report.
+     * @throws IOException when any I/O error occur.
+     */
+    @NonNull
+    public String getBugReport() throws IOException
+    {
+        String logcat = getLogcat();
+        String deviceInfo = getDeviceInfo();
+
+        String log = "---------- BUG REPORT BEGINS ----------\n";
+        log += deviceInfo + "\n" + logcat;
+        log += "---------- BUG REPORT ENDS ------------\n";
+
+        return log;
+    }
+
+    public String getDeviceInfo()
+    {
+        if (context == null) return "null context\n";
+
+        WindowManager wm =
+            (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+
+        return
+            String.format("App Version Name: %s\n", BuildConfig.VERSION_NAME) +
+            String.format("App Version Code: %s\n", BuildConfig.VERSION_CODE) +
+            String.format("OS Version: %s (%s)\n",
+                System.getProperty("os.version"), Build.VERSION.INCREMENTAL) +
+            String.format("OS API Level: %s\n", Build.VERSION.SDK) +
+            String.format("Device: %s\n", Build.DEVICE) +
+            String.format("Model (Product): %s (%s)\n", Build.MODEL,
+                Build.PRODUCT) +
+            String.format("Manufacturer: %s\n", Build.MANUFACTURER) +
+            String.format("Other tags: %s\n", Build.TAGS) +
+            String.format("Screen Width: %s\n",
+                wm.getDefaultDisplay().getWidth()) +
+            String.format("Screen Height: %s\n",
+                wm.getDefaultDisplay().getHeight()) +
+            String.format("External storage state: %s\n\n",
+                Environment.getExternalStorageState());
+    }
+
+    public String getLogcat() throws IOException
+    {
+        int maxLineCount = 250;
+        StringBuilder builder = new StringBuilder();
+
+        String[] command = new String[]{ "logcat", "-d" };
+        java.lang.Process process = Runtime.getRuntime().exec(command);
+
+        InputStreamReader in = new InputStreamReader(process.getInputStream());
+        BufferedReader bufferedReader = new BufferedReader(in);
+
+        LinkedList<String> log = new LinkedList<>();
+
+        String line;
+        while ((line = bufferedReader.readLine()) != null)
+        {
+            log.addLast(line);
+            if (log.size() > maxLineCount) log.removeFirst();
+        }
+
+        for (String l : log)
+        {
+            builder.append(l);
+            builder.append('\n');
+        }
+
+        return builder.toString();
+    }
+
+    /**
+     * Captures a bug report and saves it to a file in the SD card.
+     * <p>
+     * The contents of the file are generated by the method {@link
+     * #getBugReport()}. The file is saved in the apps's external private
+     * storage.
+     *
+     * @return the generated file.
+     * @throws IOException when I/O errors occur.
+     */
+    @NonNull
+    public void dumpBugReportToFile()
+    {
+        try
+        {
+
+            String date =
+                new SimpleDateFormat("yyyy-MM-dd HHmmss", Locale.US).format(
+                    new Date());
+
+            if (context == null) throw new IllegalStateException();
+
+            File dir = new AndroidDirFinder(context).getFilesDir("Logs");
+            if (dir == null)
+                throw new IOException("log dir should not be null");
+
+            File logFile =
+                new File(String.format("%s/Log %s.txt", dir.getPath(), date));
+            FileWriter output = new FileWriter(logFile);
+            output.write(getBugReport());
+            output.close();
+        }
+        catch (IOException e)
+        {
+            e.printStackTrace();
+        }
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/AndroidBugReporter.kt

@@ -1,110 +0,0 @@
-/*
- * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase
-
-import android.content.Context
-import android.os.Build
-import android.os.Environment
-import android.view.WindowManager
-import java.io.*
-import java.text.SimpleDateFormat
-import java.util.*
-import javax.inject.Inject
-
-open class AndroidBugReporter @Inject constructor(@AppContext private val context: Context) {
-
-    /**
-     * Captures and returns a bug report. The bug report contains some device
-     * information and the logcat.
-     *
-     * @return a String containing the bug report.
-     * @throws IOException when any I/O error occur.
-     */
-    @Throws(IOException::class)
-    fun getBugReport(): String {
-        var log = "---------- BUG REPORT BEGINS ----------\n"
-        log += "${getLogcat()}\n"
-        log += "${getDeviceInfo()}\n"
-        log += "---------- BUG REPORT ENDS ------------\n"
-        return log
-    }
-
-    @Throws(IOException::class)
-    fun getLogcat(): String {
-        val maxLineCount = 250
-        val builder = StringBuilder()
-        val process = Runtime.getRuntime().exec(arrayOf("logcat", "-d"))
-        val inputReader = InputStreamReader(process.inputStream)
-        val bufferedReader = BufferedReader(inputReader)
-        val log = LinkedList<String>()
-        var line: String?
-        while (true) {
-            line = bufferedReader.readLine()
-            if (line == null) break;
-            log.addLast(line)
-            if (log.size > maxLineCount) log.removeFirst()
-        }
-        for (l in log) {
-            builder.appendln(l)
-        }
-        return builder.toString()
-    }
-
-    /**
-     * Captures a bug report and saves it to a file in the SD card.
-     *
-     * The contents of the file are generated by the method [ ][.getBugReport]. The file is saved
-     * in the apps's external private storage.
-     *
-     * @return the generated file.
-     * @throws IOException when I/O errors occur.
-     */
-    fun dumpBugReportToFile() {
-        try {
-            val date = SimpleDateFormat("yyyy-MM-dd HHmmss", Locale.US).format(Date())
-            val dir = AndroidDirFinder(context).getFilesDir("Logs")
-                    ?: throw IOException("log dir should not be null")
-            val logFile = File(String.format("%s/Log %s.txt", dir.path, date))
-            val output = FileWriter(logFile)
-            output.write(getBugReport())
-            output.close()
-        } catch (e: IOException) {
-            e.printStackTrace()
-        }
-    }
-
-    private fun getDeviceInfo(): String {
-        val wm = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
-        return buildString {
-            appendln("App Version Name: ${BuildConfig.VERSION_NAME}")
-            appendln("App Version Code: ${BuildConfig.VERSION_CODE}")
-            appendln("OS Version: ${System.getProperty("os.version")} (${Build.VERSION.INCREMENTAL})")
-            appendln("OS API Level: ${Build.VERSION.SDK_INT}")
-            appendln("Device: ${Build.DEVICE}")
-            appendln("Model (Product): ${Build.MODEL} (${Build.PRODUCT})")
-            appendln("Manufacturer: ${Build.MANUFACTURER}")
-            appendln("Other tags: ${Build.TAGS}")
-            appendln("Screen Width: ${wm.defaultDisplay.width}")
-            appendln("Screen Height: ${wm.defaultDisplay.height}")
-            appendln("External storage state: ${Environment.getExternalStorageState()}")
-            appendln()
-        }
-    }
-
-}

android/android-base/src/main/java/org/isoron/androidbase/AndroidDirFinder.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase;
+
+import android.content.*;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.content.*;
+import android.util.*;
+
+import org.isoron.androidbase.utils.*;
+
+import java.io.*;
+
+import javax.inject.*;
+
+public class AndroidDirFinder
+{
+    @NonNull
+    private Context context;
+
+    @Inject
+    public AndroidDirFinder(@NonNull @AppContext Context context)
+    {
+        this.context = context;
+    }
+
+    @Nullable
+    public File getFilesDir(@Nullable String relativePath)
+    {
+        File externalFilesDirs[] =
+            ContextCompat.getExternalFilesDirs(context, null);
+        if (externalFilesDirs == null)
+        {
+            Log.e("BaseSystem",
+                "getFilesDir: getExternalFilesDirs returned null");
+            return null;
+        }
+
+        return FileUtils.getDir(externalFilesDirs, relativePath);
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/AndroidDirFinder.kt

@@ -1,34 +0,0 @@
-/*
- * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase
-
-import android.content.Context
-import androidx.core.content.ContextCompat
-import org.isoron.androidbase.utils.FileUtils
-import java.io.File
-import javax.inject.Inject
-
-class AndroidDirFinder @Inject constructor(@param:AppContext private val context: Context) {
-    fun getFilesDir(relativePath: String): File? {
-        return FileUtils.getDir(
-                ContextCompat.getExternalFilesDirs(context, null),
-                relativePath
-        )
-    }
-}

android/android-base/src/main/java/org/isoron/androidbase/AppContext.java

@@ -16,11 +16,16 @@
  * You should have received a copy of the GNU General Public License along
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
-package org.isoron.androidbase
 
-import javax.inject.Qualifier
+package org.isoron.androidbase;
+
+import java.lang.annotation.*;
+
+import javax.inject.*;
 
 @Qualifier
-@MustBeDocumented
-@Retention(AnnotationRetention.RUNTIME)
-annotation class AppContext
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+public @interface AppContext
+{
+}

android/android-base/src/main/java/org/isoron/androidbase/BaseExceptionHandler.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import org.isoron.androidbase.activities.*;
+
+public class BaseExceptionHandler implements Thread.UncaughtExceptionHandler
+{
+    @Nullable
+    private Thread.UncaughtExceptionHandler originalHandler;
+
+    @NonNull
+    private BaseActivity activity;
+
+    public BaseExceptionHandler(@NonNull BaseActivity activity)
+    {
+        this.activity = activity;
+        originalHandler = Thread.getDefaultUncaughtExceptionHandler();
+    }
+
+    @Override
+    public void uncaughtException(@Nullable Thread thread,
+                                  @Nullable Throwable ex)
+    {
+        if (ex == null) return;
+
+        try
+        {
+            ex.printStackTrace();
+            new AndroidBugReporter(activity).dumpBugReportToFile();
+        }
+        catch (Exception e)
+        {
+            e.printStackTrace();
+        }
+
+//        if (ex.getCause() instanceof InconsistentDatabaseException)
+//        {
+//            HabitsApplication app = (HabitsApplication) activity.getApplication();
+//            HabitList habits = app.getComponent().getHabitList();
+//            habits.repair();
+//            System.exit(0);
+//        }
+
+        if (originalHandler != null)
+            originalHandler.uncaughtException(thread, ex);
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/BaseExceptionHandler.kt

@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase
-
-import org.isoron.androidbase.activities.BaseActivity
-
-class BaseExceptionHandler(private val activity: BaseActivity) : Thread.UncaughtExceptionHandler {
-
-    private val originalHandler: Thread.UncaughtExceptionHandler? =
-            Thread.getDefaultUncaughtExceptionHandler()
-
-    override fun uncaughtException(thread: Thread?, ex: Throwable?) {
-        if (ex == null) return
-        if (thread == null) return
-        try {
-            ex.printStackTrace()
-            AndroidBugReporter(activity).dumpBugReportToFile()
-        } catch (e: Exception) {
-            e.printStackTrace()
-        }
-        originalHandler?.uncaughtException(thread, ex)
-    }
-}

android/android-base/src/main/java/org/isoron/androidbase/SSLContextProvider.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase;
+
+import android.content.*;
+
+import androidx.annotation.NonNull;
+
+import java.io.*;
+import java.security.*;
+import java.security.cert.Certificate;
+import java.security.cert.*;
+
+import javax.inject.*;
+import javax.net.ssl.*;
+
+public class SSLContextProvider
+{
+    private Context context;
+
+    @Inject
+    public SSLContextProvider(@NonNull @AppContext Context context)
+    {
+        this.context = context;
+    }
+
+    public SSLContext getCACertSSLContext()
+    {
+        try
+        {
+            CertificateFactory cf = CertificateFactory.getInstance("X.509");
+            InputStream caInput = context.getAssets().open("cacert.pem");
+            Certificate ca = cf.generateCertificate(caInput);
+
+            KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
+            ks.load(null, null);
+            ks.setCertificateEntry("ca", ca);
+
+            TrustManagerFactory tmf = TrustManagerFactory.getInstance(
+                TrustManagerFactory.getDefaultAlgorithm());
+            tmf.init(ks);
+
+            SSLContext ctx = SSLContext.getInstance("TLS");
+            ctx.init(null, tmf.getTrustManagers(), null);
+
+            return ctx;
+        }
+        catch (Exception e)
+        {
+            throw new RuntimeException(e);
+        }
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/SSLContextProvider.kt

@@ -1,48 +0,0 @@
-/*
- * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase
-
-import android.content.Context
-import java.security.KeyStore
-import java.security.cert.CertificateFactory
-import javax.inject.Inject
-import javax.net.ssl.SSLContext
-import javax.net.ssl.TrustManagerFactory
-
-class SSLContextProvider @Inject constructor(@param:AppContext private val context: Context) {
-    fun getCACertSSLContext(): SSLContext {
-        try {
-            val cf = CertificateFactory.getInstance("X.509")
-            val ca = cf.generateCertificate(context.assets.open("cacert.pem"))
-            val ks = KeyStore.getInstance(KeyStore.getDefaultType()).apply {
-                load(null, null)
-                setCertificateEntry("ca", ca)
-            }
-            val alg = TrustManagerFactory.getDefaultAlgorithm()
-            val tmf = TrustManagerFactory.getInstance(alg).apply {
-                init(ks)
-            }
-            return SSLContext.getInstance("TLS").apply {
-                init(null, tmf.trustManagers, null)
-            }
-        } catch (e: Exception) {
-            throw RuntimeException(e)
-        }
-    }
-}

android/android-base/src/main/java/org/isoron/androidbase/activities/ActivityContext.java

@@ -16,11 +16,16 @@
  * You should have received a copy of the GNU General Public License along
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
-package org.isoron.androidbase.activities
 
-import javax.inject.*
+package org.isoron.androidbase.activities;
+
+import java.lang.annotation.*;
+
+import javax.inject.*;
 
 @Qualifier
-@MustBeDocumented
-@kotlin.annotation.Retention(AnnotationRetention.RUNTIME)
-annotation class ActivityContext
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ActivityContext
+{
+}

android/android-base/src/main/java/org/isoron/androidbase/activities/ActivityScope.java

@@ -16,12 +16,13 @@
  * You should have received a copy of the GNU General Public License along
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
-package org.isoron.androidbase.activities
 
-import javax.inject.*
+package org.isoron.androidbase.activities;
+
+import javax.inject.*;
 
 /**
  * Scope used by objects that live as long as the activity is alive.
  */
 @Scope
-annotation class ActivityScope
+public @interface ActivityScope { }

android/android-base/src/main/java/org/isoron/androidbase/activities/BaseActivity.java

@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase.activities;
+
+import android.content.*;
+import android.os.*;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.*;
+import android.view.*;
+
+import org.isoron.androidbase.*;
+
+import static android.R.anim.fade_in;
+import static android.R.anim.fade_out;
+
+/**
+ * Base class for all activities in the application.
+ * <p>
+ * This class delegates the responsibilities of an Android activity to other
+ * classes. For example, callbacks related to menus are forwarded to a {@link
+ * BaseMenu}, while callbacks related to activity results are forwarded to a
+ * {@link BaseScreen}.
+ * <p>
+ * A BaseActivity also installs an {@link java.lang.Thread.UncaughtExceptionHandler}
+ * to the main thread. By default, this handler is an instance of
+ * BaseExceptionHandler, which logs the exception to the disk before the application
+ * crashes. To the default handler, you should override the method
+ * getExceptionHandler.
+ */
+abstract public class BaseActivity extends AppCompatActivity
+{
+    @Nullable
+    private BaseMenu baseMenu;
+
+    @Nullable
+    private BaseScreen screen;
+
+    @Override
+    public boolean onCreateOptionsMenu(@Nullable Menu menu)
+    {
+        if (menu == null) return true;
+        if (baseMenu == null) return true;
+        baseMenu.onCreate(getMenuInflater(), menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@Nullable MenuItem item)
+    {
+        if (item == null) return false;
+        if (baseMenu == null) return false;
+        return baseMenu.onItemSelected(item);
+    }
+
+    public void restartWithFade(Class<?> cls)
+    {
+        new Handler().postDelayed(() ->
+        {
+            finish();
+            overridePendingTransition(fade_in, fade_out);
+            startActivity(new Intent(this, cls));
+
+        }, 500); // HACK: Let the menu disappear first
+    }
+
+    public void setBaseMenu(@Nullable BaseMenu baseMenu)
+    {
+        this.baseMenu = baseMenu;
+    }
+
+    public void setScreen(@Nullable BaseScreen screen)
+    {
+        this.screen = screen;
+    }
+
+    public void showDialog(AppCompatDialogFragment dialog, String tag)
+    {
+        dialog.show(getSupportFragmentManager(), tag);
+    }
+
+    public void showDialog(AppCompatDialog dialog)
+    {
+        dialog.show();
+    }
+
+    @Override
+    protected void onActivityResult(int request, int result, Intent data)
+    {
+        if (screen == null) super.onActivityResult(request, result, data);
+        else screen.onResult(request, result, data);
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState)
+    {
+        super.onCreate(savedInstanceState);
+        Thread.setDefaultUncaughtExceptionHandler(getExceptionHandler());
+    }
+
+    protected Thread.UncaughtExceptionHandler getExceptionHandler()
+    {
+        return new BaseExceptionHandler(this);
+    }
+
+    @Override
+    protected void onResume()
+    {
+        super.onResume();
+        if(screen != null) screen.reattachDialogs();
+    }
+
+    @Override
+    public void startActivity(Intent intent)
+    {
+        try
+        {
+            super.startActivity(intent);
+        }
+        catch (ActivityNotFoundException e)
+        {
+            if (this.screen != null)
+                this.screen.showMessage(R.string.activity_not_found);
+        }
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/activities/BaseActivity.kt

@@ -1,104 +0,0 @@
-/*
- * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase.activities
-
-import android.R.anim
-import android.content.*
-import android.os.*
-import android.view.*
-import androidx.appcompat.app.*
-import org.isoron.androidbase.*
-
-/**
- * Base class for all activities in the application.
- *
- * This class delegates the responsibilities of an Android activity to other classes. For example,
- * callbacks related to menus are forwarded to a []BaseMenu], while callbacks related to activity
- * results are forwarded to a [BaseScreen].
- *
- *
- * A BaseActivity also installs an [java.lang.Thread.UncaughtExceptionHandler] to the main thread.
- * By default, this handler is an instance of BaseExceptionHandler, which logs the exception to the
- * disk before the application crashes. To the default handler, you should override the method
- * getExceptionHandler.
- */
-abstract class BaseActivity : AppCompatActivity() {
-    private var baseMenu: BaseMenu? = null
-    private var screen: BaseScreen? = null
-
-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
-        if (menu != null) baseMenu?.onCreate(menuInflater, menu)
-        return true
-    }
-
-    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
-        if (item == null) return false
-        return baseMenu?.onItemSelected(item) ?: false
-    }
-
-    fun restartWithFade(cls: Class<*>?) {
-        Handler().postDelayed({
-            finish()
-            overridePendingTransition(anim.fade_in, anim.fade_out)
-            startActivity(Intent(this, cls))
-        }, 500) // HACK: Let the menu disappear first
-    }
-
-    fun setBaseMenu(baseMenu: BaseMenu?) {
-        this.baseMenu = baseMenu
-    }
-
-    fun setScreen(screen: BaseScreen?) {
-        this.screen = screen
-    }
-
-    fun showDialog(dialog: AppCompatDialogFragment, tag: String?) {
-        dialog.show(supportFragmentManager, tag)
-    }
-
-    fun showDialog(dialog: AppCompatDialog) {
-        dialog.show()
-    }
-
-    override fun onActivityResult(request: Int, result: Int, data: Intent?) {
-        val screen = screen
-        if(screen == null) super.onActivityResult(request, result, data)
-        else screen.onResult(request, result, data)
-    }
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        Thread.setDefaultUncaughtExceptionHandler(getExceptionHandler())
-    }
-
-    private fun getExceptionHandler() = BaseExceptionHandler(this)
-
-    override fun onResume() {
-        super.onResume()
-        screen?.reattachDialogs()
-    }
-
-    override fun startActivity(intent: Intent?) {
-        try {
-            super.startActivity(intent)
-        } catch(e: ActivityNotFoundException) {
-            this.screen?.showMessage(R.string.activity_not_found)
-        }
-    }
-}

android/android-base/src/main/java/org/isoron/androidbase/activities/BaseMenu.java

@@ -16,50 +16,71 @@
  * You should have received a copy of the GNU General Public License along
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
-package org.isoron.androidbase.activities
 
-import android.view.*
-import androidx.annotation.*
+package org.isoron.androidbase.activities;
+
+import android.view.*;
+
+import androidx.annotation.MenuRes;
+import androidx.annotation.NonNull;
 
 /**
  * Base class for all the menus in the application.
- *
+ * <p>
  * This class receives from BaseActivity all callbacks related to menus, such as
  * menu creation and click events. It also handles some implementation details
  * of creating menus in Android, such as inflating the resources.
  */
-abstract class BaseMenu(private val activity: BaseActivity) {
+public abstract class BaseMenu
+{
+    @NonNull
+    private final BaseActivity activity;
+
+    public BaseMenu(@NonNull BaseActivity activity)
+    {
+        this.activity = activity;
+    }
+
+    @NonNull
+    public BaseActivity getActivity()
+    {
+        return activity;
+    }
 
     /**
      * Declare that the menu has changed, and should be recreated.
      */
-    fun invalidate() {
-        activity.invalidateOptionsMenu()
+    public void invalidate()
+    {
+        activity.invalidateOptionsMenu();
     }
 
     /**
      * Called when the menu is first displayed.
-     *
+     * <p>
      * The given menu is already inflated and ready to receive items. The
      * application should override this method and add items to the menu here.
      *
      * @param menu the menu that is being created.
      */
-    open fun onCreate(menu: Menu) {}
+    public void onCreate(@NonNull Menu menu)
+    {
+    }
 
     /**
      * Called when the menu is first displayed.
-     *
+     * <p>
      * This method should not be overridden. The application should override
      * the methods onCreate(Menu) and getMenuResourceId instead.
      *
      * @param inflater a menu inflater, for creating the menu
      * @param menu     the menu that is being created.
      */
-    fun onCreate(inflater: MenuInflater, menu: Menu) {
-        menu.clear()
-        inflater.inflate(getMenuResourceId(), menu)
-        onCreate(menu)
+    public void onCreate(@NonNull MenuInflater inflater, @NonNull Menu menu)
+    {
+        menu.clear();
+        inflater.inflate(getMenuResourceId(), menu);
+        onCreate(menu);
     }
 
     /**
@@ -68,7 +89,10 @@ abstract class BaseMenu(private val activity: BaseActivity) {
      * @param item the item that was selected.
      * @return true if the event was consumed, or false otherwise
      */
-    open fun onItemSelected(item: MenuItem): Boolean = false
+    public boolean onItemSelected(@NonNull MenuItem item)
+    {
+        return false;
+    }
 
     /**
      * Returns the id of the resource that should be used to inflate this menu.
@@ -76,6 +100,5 @@ abstract class BaseMenu(private val activity: BaseActivity) {
      * @return id of the menu resource.
      */
     @MenuRes
-    protected abstract fun getMenuResourceId(): Int
-
+    protected abstract int getMenuResourceId();
 }

android/android-base/src/main/java/org/isoron/androidbase/activities/BaseRootView.java

@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase.activities;
+
+import android.content.*;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.Toolbar;
+import android.view.*;
+import android.widget.*;
+
+import org.isoron.androidbase.*;
+import org.isoron.androidbase.utils.*;
+
+import static android.os.Build.VERSION.SDK_INT;
+import static android.os.Build.VERSION_CODES.LOLLIPOP;
+
+/**
+ * Base class for all root views in the application.
+ * <p>
+ * A root view is an Android view that is directly attached to an activity. This
+ * view usually includes a toolbar and a progress bar. This abstract class hides
+ * some of the complexity of setting these things up, for every version of
+ * Android.
+ */
+public abstract class BaseRootView extends FrameLayout
+{
+    @NonNull
+    private final Context context;
+
+    protected boolean shouldDisplayHomeAsUp = false;
+
+    @Nullable
+    private BaseScreen screen;
+
+    public BaseRootView(@NonNull Context context)
+    {
+        super(context);
+        this.context = context;
+    }
+
+    public boolean getDisplayHomeAsUp()
+    {
+        return shouldDisplayHomeAsUp;
+    }
+
+    public void setDisplayHomeAsUp(boolean b)
+    {
+        shouldDisplayHomeAsUp = b;
+    }
+
+    @NonNull
+    public Toolbar getToolbar()
+    {
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        if (toolbar == null) throw new RuntimeException(
+            "Your BaseRootView should have a " +
+            "toolbar with id R.id.toolbar");
+        return toolbar;
+    }
+
+    public int getToolbarColor()
+    {
+        StyledResources res = new StyledResources(context);
+        return res.getColor(R.attr.colorPrimary);
+    }
+
+    protected void initToolbar()
+    {
+        if (SDK_INT >= LOLLIPOP)
+        {
+            getToolbar().setElevation(InterfaceUtils.dpToPixels(context, 2));
+
+            View view = findViewById(R.id.toolbarShadow);
+            if (view != null) view.setVisibility(GONE);
+
+            view = findViewById(R.id.headerShadow);
+            if (view != null) view.setVisibility(GONE);
+        }
+    }
+
+    public void onAttachedToScreen(BaseScreen screen)
+    {
+        this.screen = screen;
+    }
+
+    @Nullable
+    public BaseScreen getScreen()
+    {
+        return screen;
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/activities/BaseRootView.kt

@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase.activities
-
-import android.content.Context
-import android.os.Build.VERSION
-import android.os.Build.VERSION_CODES
-import android.view.View
-import android.widget.FrameLayout
-import androidx.appcompat.widget.Toolbar
-import org.isoron.androidbase.R
-import org.isoron.androidbase.utils.InterfaceUtils.dpToPixels
-import org.isoron.androidbase.utils.StyledResources
-
-/**
- * Base class for all root views in the application.
- *
- *
- * A root view is an Android view that is directly attached to an activity. This
- * view usually includes a toolbar and a progress bar. This abstract class hides
- * some of the complexity of setting these things up, for every version of
- * Android.
- */
-abstract class BaseRootView(context: Context) : FrameLayout(context) {
-    var displayHomeAsUp = false
-    var screen: BaseScreen? = null
-        private set
-
-    open fun getToolbar(): Toolbar {
-        return findViewById(R.id.toolbar)
-                ?: throw RuntimeException("Your BaseRootView should have a toolbar with id R.id.toolbar")
-    }
-
-    open fun getToolbarColor(): Int = StyledResources(context).getColor(R.attr.colorPrimary)
-
-    protected open fun initToolbar() {
-        if (VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) {
-            getToolbar().elevation = dpToPixels(context, 2f)
-            findViewById<View>(R.id.toolbarShadow)?.visibility = View.GONE
-            findViewById<View>(R.id.headerShadow)?.visibility = View.GONE
-        }
-    }
-
-    fun onAttachedToScreen(screen: BaseScreen?) {
-        this.screen = screen
-    }
-}

android/android-base/src/main/java/org/isoron/androidbase/activities/BaseScreen.java

@@ -0,0 +1,318 @@
+/*
+ * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase.activities;
+
+import android.content.*;
+import android.graphics.*;
+import android.graphics.drawable.*;
+import android.net.*;
+import android.os.*;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.StringRes;
+import androidx.core.content.res.*;
+import androidx.appcompat.app.*;
+import androidx.appcompat.view.ActionMode;
+import androidx.appcompat.widget.Toolbar;
+import android.view.*;
+import android.widget.*;
+
+import com.google.android.material.snackbar.Snackbar;
+
+import org.isoron.androidbase.*;
+import org.isoron.androidbase.utils.*;
+
+import java.io.*;
+
+import static android.os.Build.VERSION.SDK_INT;
+import static android.os.Build.VERSION_CODES.LOLLIPOP;
+import static androidx.core.content.FileProvider.getUriForFile;
+
+/**
+ * Base class for all screens in the application.
+ * <p>
+ * Screens are responsible for deciding what root views and what menus should be
+ * attached to the main window. They are also responsible for showing other
+ * screens and for receiving their results.
+ */
+public class BaseScreen
+{
+    protected BaseActivity activity;
+
+    @Nullable
+    private BaseRootView rootView;
+
+    @Nullable
+    private BaseSelectionMenu selectionMenu;
+
+    protected Snackbar snackbar;
+
+    public BaseScreen(@NonNull BaseActivity activity)
+    {
+        this.activity = activity;
+    }
+
+    @Deprecated
+    public static int getDefaultActionBarColor(Context context)
+    {
+        if (SDK_INT < LOLLIPOP)
+        {
+            return ResourcesCompat.getColor(context.getResources(),
+                R.color.grey_900, context.getTheme());
+        }
+        else
+        {
+            StyledResources res = new StyledResources(context);
+            return res.getColor(R.attr.colorPrimary);
+        }
+    }
+
+    @Deprecated
+    public static void setupActionBarColor(@NonNull AppCompatActivity activity,
+                                           int color)
+    {
+
+        Toolbar toolbar = (Toolbar) activity.findViewById(R.id.toolbar);
+        if (toolbar == null) return;
+
+        activity.setSupportActionBar(toolbar);
+
+        ActionBar actionBar = activity.getSupportActionBar();
+        if (actionBar == null) return;
+
+        actionBar.setDisplayHomeAsUpEnabled(true);
+
+        ColorDrawable drawable = new ColorDrawable(color);
+        actionBar.setBackgroundDrawable(drawable);
+
+        if (SDK_INT >= LOLLIPOP)
+        {
+            int darkerColor = ColorUtils.mixColors(color, Color.BLACK, 0.75f);
+            activity.getWindow().setStatusBarColor(darkerColor);
+
+            toolbar.setElevation(InterfaceUtils.dpToPixels(activity, 2));
+
+            View view = activity.findViewById(R.id.toolbarShadow);
+            if (view != null) view.setVisibility(View.GONE);
+
+            view = activity.findViewById(R.id.headerShadow);
+            if (view != null) view.setVisibility(View.GONE);
+        }
+    }
+
+    /**
+     * Notifies the screen that its contents should be updated.
+     */
+    public void invalidate()
+    {
+        if (rootView == null) return;
+        rootView.invalidate();
+    }
+
+    public void invalidateToolbar()
+    {
+        if (rootView == null) return;
+
+        activity.runOnUiThread(() ->
+        {
+            Toolbar toolbar = rootView.getToolbar();
+            activity.setSupportActionBar(toolbar);
+            ActionBar actionBar = activity.getSupportActionBar();
+            if (actionBar == null) return;
+
+            actionBar.setDisplayHomeAsUpEnabled(rootView.getDisplayHomeAsUp());
+
+            int color = rootView.getToolbarColor();
+            setActionBarColor(actionBar, color);
+            setStatusBarColor(color);
+        });
+    }
+
+    /**
+     * Called when another Activity has finished, and has returned some result.
+     *
+     * @param requestCode the request code originally supplied to {@link
+     *                    android.app.Activity#startActivityForResult(Intent,
+     *                    int, Bundle)}.
+     * @param resultCode  the result code sent by the other activity.
+     * @param data        an Intent containing extra data sent by the other
+     *                    activity.
+     * @see {@link android.app.Activity#onActivityResult(int, int, Intent)}
+     */
+    public void onResult(int requestCode, int resultCode, Intent data)
+    {
+    }
+
+
+    /**
+     * Called after activity has been recreated, and the dialogs should be
+     * reattached to their controllers.
+     */
+    public void reattachDialogs()
+    {
+    }
+
+    /**
+     * Sets the menu to be shown by this screen.
+     * <p>
+     * This menu will be visible if when there is no active selection operation.
+     * If the provided menu is null, then no menu will be shown.
+     *
+     * @param menu the menu to be shown.
+     */
+    public void setMenu(@Nullable BaseMenu menu)
+    {
+        activity.setBaseMenu(menu);
+    }
+
+    /**
+     * Sets the root view for this screen.
+     *
+     * @param rootView the root view for this screen.
+     */
+    public void setRootView(@Nullable BaseRootView rootView)
+    {
+        this.rootView = rootView;
+        activity.setContentView(rootView);
+        if (rootView == null) return;
+        rootView.onAttachedToScreen(this);
+        invalidateToolbar();
+    }
+
+    /**
+     * Sets the menu to be shown when a selection is active on the screen.
+     *
+     * @param menu the menu to be shown during a selection
+     */
+    public void setSelectionMenu(@Nullable BaseSelectionMenu menu)
+    {
+        this.selectionMenu = menu;
+    }
+
+    /**
+     * Shows a message on the screen.
+     *
+     * @param stringId the string resource id for this message.
+     */
+    public void showMessage(@StringRes Integer stringId)
+    {
+        if (stringId == null || rootView == null) return;
+        if (snackbar == null)
+        {
+            snackbar = Snackbar.make(rootView, stringId, Snackbar.LENGTH_SHORT);
+            int tvId = R.id.snackbar_text;
+            TextView tv = (TextView) snackbar.getView().findViewById(tvId);
+            tv.setTextColor(Color.WHITE);
+        }
+        else snackbar.setText(stringId);
+        snackbar.show();
+    }
+
+    public void showSendEmailScreen(@StringRes int toId,
+                                    @StringRes int subjectId,
+                                    String content)
+    {
+        String to = activity.getString(toId);
+        String subject = activity.getString(subjectId);
+
+        Intent intent = new Intent();
+        intent.setAction(Intent.ACTION_SEND);
+        intent.setType("message/rfc822");
+        intent.putExtra(Intent.EXTRA_EMAIL, new String[]{ to });
+        intent.putExtra(Intent.EXTRA_SUBJECT, subject);
+        intent.putExtra(Intent.EXTRA_TEXT, content);
+        activity.startActivity(intent);
+    }
+
+    public void showSendFileScreen(@NonNull String archiveFilename)
+    {
+        File file = new File(archiveFilename);
+        Uri fileUri = getUriForFile(activity, "org.isoron.uhabits", file);
+
+        Intent intent = new Intent();
+        intent.setAction(Intent.ACTION_SEND);
+        intent.setType("application/zip");
+        intent.putExtra(Intent.EXTRA_STREAM, fileUri);
+        intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+        activity.startActivity(intent);
+    }
+
+    /**
+     * Instructs the screen to start a selection.
+     * <p>
+     * If a selection menu was provided, this menu will be shown instead of the
+     * regular one.
+     */
+    public void startSelection()
+    {
+        activity.startSupportActionMode(new ActionModeWrapper());
+    }
+
+    private void setActionBarColor(@NonNull ActionBar actionBar, int color)
+    {
+        ColorDrawable drawable = new ColorDrawable(color);
+        actionBar.setBackgroundDrawable(drawable);
+    }
+
+    private void setStatusBarColor(int baseColor)
+    {
+        if (SDK_INT < LOLLIPOP) return;
+
+        int darkerColor = ColorUtils.mixColors(baseColor, Color.BLACK, 0.75f);
+        activity.getWindow().setStatusBarColor(darkerColor);
+    }
+
+    private class ActionModeWrapper implements ActionMode.Callback
+    {
+        @Override
+        public boolean onActionItemClicked(@Nullable ActionMode mode,
+                                           @Nullable MenuItem item)
+        {
+            if (item == null || selectionMenu == null) return false;
+            return selectionMenu.onItemClicked(item);
+        }
+
+        @Override
+        public boolean onCreateActionMode(@Nullable ActionMode mode,
+                                          @Nullable Menu menu)
+        {
+            if (selectionMenu == null) return false;
+            if (mode == null || menu == null) return false;
+            selectionMenu.onCreate(activity.getMenuInflater(), mode, menu);
+            return true;
+        }
+
+        @Override
+        public void onDestroyActionMode(@Nullable ActionMode mode)
+        {
+            if (selectionMenu == null) return;
+            selectionMenu.onFinish();
+        }
+
+        @Override
+        public boolean onPrepareActionMode(@Nullable ActionMode mode,
+                                           @Nullable Menu menu)
+        {
+            if (selectionMenu == null || menu == null) return false;
+            return selectionMenu.onPrepare(menu);
+        }
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/activities/BaseScreen.kt

@@ -1,237 +0,0 @@
-/*
- * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase.activities
-
-import android.content.*
-import android.graphics.*
-import android.graphics.drawable.*
-import android.view.*
-import android.widget.*
-import androidx.annotation.*
-import androidx.appcompat.app.*
-import androidx.appcompat.view.ActionMode
-import androidx.appcompat.widget.Toolbar
-import androidx.core.content.*
-import com.google.android.material.snackbar.*
-import org.isoron.androidbase.*
-import org.isoron.androidbase.utils.*
-import org.isoron.androidbase.utils.ColorUtils.mixColors
-import org.isoron.androidbase.utils.InterfaceUtils.dpToPixels
-import java.io.*
-
-/**
- * Base class for all screens in the application.
- *
- * Screens are responsible for deciding what root views and what menus should be attached to the
- * main window. They are also responsible for showing other screens and for receiving their results.
- */
-open class BaseScreen(@JvmField protected var activity: BaseActivity) {
-
-    private var rootView: BaseRootView? = null
-    private var selectionMenu: BaseSelectionMenu? = null
-    private var snackbar: Snackbar? = null
-
-    /**
-     * Notifies the screen that its contents should be updated.
-     */
-    fun invalidate() {
-        rootView?.invalidate()
-    }
-
-    fun invalidateToolbar() {
-        rootView?.let { root ->
-            activity.runOnUiThread {
-                val toolbar = root.getToolbar()
-                activity.setSupportActionBar(toolbar)
-                activity.supportActionBar?.let { actionBar ->
-                    actionBar.setDisplayHomeAsUpEnabled(root.displayHomeAsUp)
-                    val color = root.getToolbarColor()
-                    setActionBarColor(actionBar, color)
-                    setStatusBarColor(color)
-                }
-            }
-        }
-    }
-
-    /**
-     * Called when another Activity has finished, and has returned some result.
-     *
-     * @param requestCode the request code originally supplied to startActivityForResult.
-     * @param resultCode  the result code sent by the other activity.
-     * @param data        an Intent containing extra data sent by the other
-     * activity.
-     * @see {@link android.app.Activity.onActivityResult
-     */
-    open fun onResult(requestCode: Int, resultCode: Int, data: Intent?) {}
-
-    /**
-     * Called after activity has been recreated, and the dialogs should be
-     * reattached to their controllers.
-     */
-    open fun reattachDialogs() {}
-
-    /**
-     * Sets the menu to be shown by this screen.
-     *
-     *
-     * This menu will be visible if when there is no active selection operation.
-     * If the provided menu is null, then no menu will be shown.
-     *
-     * @param menu the menu to be shown.
-     */
-    fun setMenu(menu: BaseMenu?) {
-        activity.setBaseMenu(menu)
-    }
-
-    /**
-     * Sets the root view for this screen.
-     *
-     * @param rootView the root view for this screen.
-     */
-    fun setRootView(rootView: BaseRootView?) {
-        this.rootView = rootView
-        activity.setContentView(rootView)
-        rootView?.let {
-            it.onAttachedToScreen(this)
-            invalidateToolbar()
-        }
-    }
-
-    /**
-     * Sets the menu to be shown when a selection is active on the screen.
-     *
-     * @param menu the menu to be shown during a selection
-     */
-    fun setSelectionMenu(menu: BaseSelectionMenu?) {
-        selectionMenu = menu
-    }
-
-    /**
-     * Shows a message on the screen.
-     *
-     * @param stringId the string resource id for this message.
-     */
-    fun showMessage(@StringRes stringId: Int?, rootView: View?) {
-        var snackbar = this.snackbar
-        if (stringId == null || rootView == null) return
-        if (snackbar == null) {
-            snackbar = Snackbar.make(rootView, stringId, Snackbar.LENGTH_SHORT)
-            val tvId = R.id.snackbar_text
-            val tv = snackbar.view.findViewById<TextView>(tvId)
-            tv.setTextColor(Color.WHITE)
-            this.snackbar = snackbar
-        }
-        snackbar.setText(stringId)
-        snackbar.show()
-    }
-
-    fun showMessage(@StringRes stringId: Int?) {
-        showMessage(stringId, this.rootView)
-    }
-
-    fun showSendEmailScreen(@StringRes toId: Int, @StringRes subjectId: Int, content: String?) {
-        val to = activity.getString(toId)
-        val subject = activity.getString(subjectId)
-        activity.startActivity(Intent().apply {
-            action = Intent.ACTION_SEND
-            type = "message/rfc822"
-            putExtra(Intent.EXTRA_EMAIL, arrayOf(to))
-            putExtra(Intent.EXTRA_SUBJECT, subject)
-            putExtra(Intent.EXTRA_TEXT, content)
-        })
-    }
-
-    fun showSendFileScreen(archiveFilename: String) {
-        val file = File(archiveFilename)
-        val fileUri = FileProvider.getUriForFile(activity, "org.isoron.uhabits", file)
-        activity.startActivity(Intent().apply {
-            action = Intent.ACTION_SEND
-            type = "application/zip"
-            putExtra(Intent.EXTRA_STREAM, fileUri)
-            flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
-        })
-    }
-
-    /**
-     * Instructs the screen to start a selection.
-     *
-     * If a selection menu was provided, this menu will be shown instead of the regular one.
-     */
-    fun startSelection() {
-        activity.startSupportActionMode(ActionModeWrapper())
-    }
-
-    private fun setActionBarColor(actionBar: ActionBar, color: Int) {
-        val drawable = ColorDrawable(color)
-        actionBar.setBackgroundDrawable(drawable)
-    }
-
-    private fun setStatusBarColor(baseColor: Int) {
-        val darkerColor = mixColors(baseColor, Color.BLACK, 0.75f)
-        activity.window.statusBarColor = darkerColor
-    }
-
-    private inner class ActionModeWrapper : ActionMode.Callback {
-        override fun onActionItemClicked(mode: ActionMode?, item: MenuItem?): Boolean {
-            val selectionMenu = selectionMenu
-            if (item == null || selectionMenu == null) return false
-            return selectionMenu.onItemClicked(item)
-        }
-
-        override fun onCreateActionMode(mode: ActionMode?, menu: Menu?): Boolean {
-            if (mode == null || menu == null) return false
-            val selectionMenu = selectionMenu ?: return false
-            selectionMenu.onCreate(activity.menuInflater, mode, menu)
-            return true
-        }
-
-        override fun onDestroyActionMode(mode: ActionMode?) {
-            selectionMenu?.onFinish()
-        }
-
-        override fun onPrepareActionMode(mode: ActionMode?, menu: Menu?): Boolean {
-            val selectionMenu = selectionMenu
-            if (selectionMenu == null || menu == null) return false
-            return selectionMenu.onPrepare(menu)
-        }
-    }
-
-    companion object {
-        @JvmStatic
-        @Deprecated("")
-        fun getDefaultActionBarColor(context: Context) =
-                StyledResources(context).getColor(R.attr.colorPrimary)
-
-        @JvmStatic
-        @Deprecated("")
-        fun setupActionBarColor(activity: AppCompatActivity, color: Int) {
-            val toolbar = activity.findViewById<Toolbar>(R.id.toolbar) ?: return
-            activity.setSupportActionBar(toolbar)
-            val supportActionBar = activity.supportActionBar ?: return
-            supportActionBar.setDisplayHomeAsUpEnabled(true)
-            val drawable = ColorDrawable(color)
-            supportActionBar.setBackgroundDrawable(drawable)
-            val darkerColor = mixColors(color, Color.BLACK, 0.75f)
-            activity.window.statusBarColor = darkerColor
-            toolbar.elevation = dpToPixels(activity, 2f)
-            activity.findViewById<View>(R.id.toolbarShadow)?.visibility = View.GONE
-            activity.findViewById<View>(R.id.headerShadow)?.visibility = View.GONE
-        }
-    }
-}

android/android-base/src/main/java/org/isoron/androidbase/activities/BaseSelectionMenu.java

@@ -16,43 +16,50 @@
  * You should have received a copy of the GNU General Public License along
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
-package org.isoron.androidbase.activities
 
-import android.view.*
-import androidx.appcompat.view.ActionMode
+package org.isoron.androidbase.activities;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.view.ActionMode;
+import android.view.*;
 
 /**
  * Base class for all the selection menus in the application.
- *
+ * <p>
  * A selection menu is a menu that appears when the screen starts a selection
  * operation. It contains actions that modify the selected items, such as delete
  * or archive. Since it replaces the toolbar, it also has a title.
- *
+ * <p>
  * This class hides many implementation details of creating such menus in
- * Android. The interface is supposed to look very similar to [BaseMenu],
+ * Android. The interface is supposed to look very similar to {@link BaseMenu},
  * with a few additional methods, such as finishing the selection operation.
- * Internally, it uses an [ActionMode].
+ * Internally, it uses an {@link ActionMode}.
  */
-abstract class BaseSelectionMenu {
-    private var actionMode: ActionMode? = null
+public abstract class BaseSelectionMenu
+{
+    @Nullable
+    private ActionMode actionMode;
 
     /**
      * Finishes the selection operation.
      */
-    fun finish() {
-        actionMode?.finish()
+    public void finish()
+    {
+        if (actionMode != null) actionMode.finish();
     }
 
     /**
      * Declare that the menu has changed, and should be recreated.
      */
-    fun invalidate() {
-        actionMode?.invalidate()
+    public void invalidate()
+    {
+        if (actionMode != null) actionMode.invalidate();
     }
 
     /**
      * Called when the menu is first displayed.
-     *
+     * <p>
      * This method should not be overridden. The application should override
      * the methods onCreate(Menu) and getMenuResourceId instead.
      *
@@ -60,16 +67,22 @@ abstract class BaseSelectionMenu {
      * @param mode     the action mode associated with this menu.
      * @param menu     the menu that is being created.
      */
-    fun onCreate(inflater: MenuInflater, mode: ActionMode, menu: Menu) {
-        actionMode = mode
-        inflater.inflate(getResourceId(), menu)
-        onCreate(menu)
+    public void onCreate(@NonNull MenuInflater inflater,
+                         @NonNull ActionMode mode,
+                         @NonNull Menu menu)
+    {
+        this.actionMode = mode;
+        inflater.inflate(getResourceId(), menu);
+        onCreate(menu);
     }
 
     /**
      * Called when the selection operation is about to finish.
      */
-    open fun onFinish() {}
+    public void onFinish()
+    {
+
+    }
 
     /**
      * Called whenever an item on the menu is selected.
@@ -77,7 +90,11 @@ abstract class BaseSelectionMenu {
      * @param item the item that was selected.
      * @return true if the event was consumed, or false otherwise
      */
-    open fun onItemClicked(item: MenuItem): Boolean = false
+    public boolean onItemClicked(@NonNull MenuItem item)
+    {
+        return false;
+    }
+
 
     /**
      * Called whenever the menu is invalidated.
@@ -85,23 +102,29 @@ abstract class BaseSelectionMenu {
      * @param menu the menu to be refreshed
      * @return true if the menu has changes, false otherwise
      */
-    open fun onPrepare(menu: Menu): Boolean = false
+    public boolean onPrepare(@NonNull Menu menu)
+    {
+        return false;
+    }
 
     /**
      * Sets the title of the selection menu.
      *
      * @param title the new title.
      */
-    fun setTitle(title: String?) {
-        actionMode?.title = title
+    public void setTitle(String title)
+    {
+        if (actionMode != null) actionMode.setTitle(title);
     }
 
-    protected abstract fun getResourceId(): Int
+    protected abstract int getResourceId();
 
     /**
      * Called when the menu is first created.
      *
      * @param menu the menu being created
      */
-    protected fun onCreate(menu: Menu) {}
+    protected void onCreate(@NonNull Menu menu)
+    {
+    }
 }

android/android-base/src/main/java/org/isoron/androidbase/utils/ColorUtils.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase.utils;
+
+import android.graphics.*;
+
+public abstract class ColorUtils
+{
+    public static int mixColors(int color1, int color2, float amount)
+    {
+        final byte ALPHA_CHANNEL = 24;
+        final byte RED_CHANNEL = 16;
+        final byte GREEN_CHANNEL = 8;
+        final byte BLUE_CHANNEL = 0;
+
+        final float inverseAmount = 1.0f - amount;
+
+        int a = ((int) (((float) (color1 >> ALPHA_CHANNEL & 0xff) * amount) +
+                        ((float) (color2 >> ALPHA_CHANNEL & 0xff) *
+                         inverseAmount))) & 0xff;
+        int r = ((int) (((float) (color1 >> RED_CHANNEL & 0xff) * amount) +
+                        ((float) (color2 >> RED_CHANNEL & 0xff) *
+                         inverseAmount))) & 0xff;
+        int g = ((int) (((float) (color1 >> GREEN_CHANNEL & 0xff) * amount) +
+                        ((float) (color2 >> GREEN_CHANNEL & 0xff) *
+                         inverseAmount))) & 0xff;
+        int b = ((int) (((float) (color1 & 0xff) * amount) +
+                        ((float) (color2 & 0xff) * inverseAmount))) & 0xff;
+
+        return a << ALPHA_CHANNEL | r << RED_CHANNEL | g << GREEN_CHANNEL |
+               b << BLUE_CHANNEL;
+    }
+
+    public static int setAlpha(int color, float newAlpha)
+    {
+        int intAlpha = (int) (newAlpha * 255);
+        return Color.argb(intAlpha, Color.red(color), Color.green(color),
+            Color.blue(color));
+    }
+
+    public static int setMinValue(int color, float newValue)
+    {
+        float hsv[] = new float[3];
+        Color.colorToHSV(color, hsv);
+        hsv[2] = Math.max(hsv[2], newValue);
+        return Color.HSVToColor(hsv);
+    }
+
+}

android/android-base/src/main/java/org/isoron/androidbase/utils/ColorUtils.kt

@@ -1,58 +0,0 @@
-/*
- * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase.utils
-
-import android.graphics.Color
-import kotlin.math.max
-
-object ColorUtils {
-    private const val ALPHA_CHANNEL = 24
-    private const val RED_CHANNEL = 16
-    private const val GREEN_CHANNEL = 8
-    private const val BLUE_CHANNEL = 0
-
-    @JvmStatic
-    fun mixColors(color1: Int, color2: Int, amount: Float): Int {
-        val a = mixColorChannel(color1, color2, amount, ALPHA_CHANNEL)
-        val r = mixColorChannel(color1, color2, amount, RED_CHANNEL)
-        val g = mixColorChannel(color1, color2, amount, GREEN_CHANNEL)
-        val b = mixColorChannel(color1, color2, amount, BLUE_CHANNEL)
-        return a or r or g or b
-    }
-
-    @JvmStatic
-    fun setAlpha(color: Int, newAlpha: Float): Int {
-        val intAlpha = (newAlpha * 255).toInt()
-        return Color.argb(intAlpha, Color.red(color), Color.green(color), Color.blue(color))
-    }
-
-    @JvmStatic
-    fun setMinValue(color: Int, newValue: Float): Int {
-        val hsv = FloatArray(3)
-        Color.colorToHSV(color, hsv)
-        hsv[2] = max(hsv[2], newValue)
-        return Color.HSVToColor(hsv)
-    }
-
-    private fun mixColorChannel(color1: Int, color2: Int, amount: Float, channel: Int): Int {
-        val fl = (color1 shr channel and 0xff).toFloat() * amount
-        val f2 = (color2 shr channel and 0xff).toFloat() * (1.0f - amount)
-        return (fl + f2).toInt() and 0xff shl channel
-    }
-}

android/android-base/src/main/java/org/isoron/androidbase/utils/FileUtils.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase.utils;
+
+import android.os.*;
+import android.util.*;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import java.io.*;
+
+public abstract class FileUtils
+{
+    public static void copy(File src, File dst) throws IOException
+    {
+        FileInputStream inStream = new FileInputStream(src);
+        FileOutputStream outStream = new FileOutputStream(dst);
+        copy(inStream, outStream);
+    }
+
+    public static void copy(InputStream inStream, File dst) throws IOException
+    {
+        FileOutputStream outStream = new FileOutputStream(dst);
+        copy(inStream, outStream);
+    }
+
+    public static void copy(InputStream in, OutputStream out) throws IOException
+    {
+        int numBytes;
+        byte[] buffer = new byte[1024];
+
+        while ((numBytes = in.read(buffer)) != -1)
+            out.write(buffer, 0, numBytes);
+    }
+
+    @Nullable
+    public static File getDir(@NonNull File potentialParentDirs[],
+                              @Nullable String relativePath)
+    {
+        if (relativePath == null) relativePath = "";
+
+        File chosenDir = null;
+        for (File dir : potentialParentDirs)
+        {
+            if (dir == null || !dir.canWrite()) continue;
+            chosenDir = dir;
+            break;
+        }
+
+        if (chosenDir == null)
+        {
+            Log.e("FileUtils",
+                "getDir: all potential parents are null or non-writable");
+            return null;
+        }
+
+        File dir = new File(
+            String.format("%s/%s/", chosenDir.getAbsolutePath(), relativePath));
+        if (!dir.exists() && !dir.mkdirs())
+        {
+            Log.e("FileUtils",
+                "getDir: chosen dir does not exist and cannot be created");
+            return null;
+        }
+
+        return dir;
+    }
+
+    @Nullable
+    public static File getSDCardDir(@Nullable String relativePath)
+    {
+        File parents[] =
+            new File[]{ Environment.getExternalStorageDirectory() };
+        return getDir(parents, relativePath);
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/utils/FileUtils.kt

@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase.utils
-
-import android.os.Environment
-import android.util.Log
-import java.io.*
-
-
-fun File.copyTo(dst: File) {
-    val inStream = FileInputStream(this)
-    val outStream = FileOutputStream(dst)
-    inStream.copyTo(outStream)
-}
-
-fun InputStream.copyTo(dst: File) {
-    val outStream = FileOutputStream(dst)
-    this.copyTo(outStream)
-}
-
-fun InputStream.copyTo(out: OutputStream) {
-    var numBytes: Int
-    val buffer = ByteArray(1024)
-    while (this.read(buffer).also { numBytes = it } != -1) {
-        out.write(buffer, 0, numBytes)
-    }
-}
-
-object FileUtils {
-    @JvmStatic
-    fun getDir(potentialParentDirs: Array<File>, relativePath: String): File? {
-        val chosenDir: File? = potentialParentDirs.firstOrNull { dir -> dir.canWrite() }
-        if (chosenDir == null) {
-            Log.e("FileUtils", "getDir: all potential parents are null or non-writable")
-            return null
-        }
-        val dir = File("${chosenDir.absolutePath}/${relativePath}/")
-        if (!dir.exists() && !dir.mkdirs()) {
-            Log.e("FileUtils", "getDir: chosen dir does not exist and cannot be created")
-            return null
-        }
-        return dir
-    }
-
-    @JvmStatic
-    fun getSDCardDir(relativePath: String): File? {
-        val parents = arrayOf(Environment.getExternalStorageDirectory())
-        return getDir(parents, relativePath)
-    }
-}

android/android-base/src/main/java/org/isoron/androidbase/utils/InterfaceUtils.java

@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase.utils;
+
+import android.content.*;
+import android.content.res.*;
+import android.graphics.*;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.view.*;
+import android.util.*;
+import android.view.*;
+import android.widget.*;
+
+public abstract class InterfaceUtils
+{
+    private static Typeface fontAwesome;
+
+    @Nullable
+    private static Float fixedResolution = null;
+
+    public static void setFixedResolution(@NonNull Float f)
+    {
+        fixedResolution = f;
+    }
+
+    public static Typeface getFontAwesome(Context context)
+    {
+        if(fontAwesome == null) fontAwesome =
+            Typeface.createFromAsset(context.getAssets(),
+                "fontawesome-webfont.ttf");
+
+        return fontAwesome;
+    }
+
+    public static float dpToPixels(Context context, float dp)
+    {
+        if(fixedResolution != null) return dp * fixedResolution;
+
+        Resources resources = context.getResources();
+        DisplayMetrics metrics = resources.getDisplayMetrics();
+        return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, metrics);
+    }
+
+    public static float spToPixels(Context context, float sp)
+    {
+        if(fixedResolution != null) return sp * fixedResolution;
+
+        Resources resources = context.getResources();
+        DisplayMetrics metrics = resources.getDisplayMetrics();
+        return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, metrics);
+    }
+
+    public static float getDimension(Context context, int id)
+    {
+        float dim = context.getResources().getDimension(id);
+        if (fixedResolution == null) return dim;
+        else
+        {
+            DisplayMetrics dm = context.getResources().getDisplayMetrics();
+            float actualDensity = dm.density;
+            return dim / actualDensity * fixedResolution;
+        }
+    }
+
+    public static void setupEditorAction(@NonNull ViewGroup parent,
+                                         @NonNull TextView.OnEditorActionListener listener)
+    {
+        for (int i = 0; i < parent.getChildCount(); i++)
+        {
+            View child = parent.getChildAt(i);
+
+            if (child instanceof ViewGroup)
+                setupEditorAction((ViewGroup) child, listener);
+
+            if (child instanceof TextView)
+                ((TextView) child).setOnEditorActionListener(listener);
+        }
+    }
+
+    public static boolean isLayoutRtl(View view)
+    {
+        return ViewCompat.getLayoutDirection(view) ==
+               ViewCompat.LAYOUT_DIRECTION_RTL;
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/utils/InterfaceUtils.kt

@@ -1,85 +0,0 @@
-/*
- * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase.utils
-
-import android.content.*
-import android.graphics.*
-import android.util.*
-import android.view.*
-import android.widget.*
-import android.widget.TextView.*
-import androidx.core.view.*
-
-object InterfaceUtils {
-    private var fontAwesome: Typeface? = null
-    private var fixedResolution: Float? = null
-
-    @JvmStatic
-    fun setFixedResolution(f: Float) {
-        fixedResolution = f
-    }
-
-    @JvmStatic
-    fun getFontAwesome(context: Context): Typeface? {
-        if (fontAwesome == null) {
-            fontAwesome = Typeface.createFromAsset(context.assets, "fontawesome-webfont.ttf")
-        }
-        return fontAwesome
-    }
-
-    @JvmStatic
-    fun dpToPixels(context: Context, dp: Float): Float {
-        if (fixedResolution != null) return dp * fixedResolution!!
-        return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
-                                         dp,
-                                         context.resources.displayMetrics)
-    }
-
-    @JvmStatic
-    fun spToPixels(context: Context, sp: Float): Float {
-        if (fixedResolution != null) return sp * fixedResolution!!
-        return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
-                                         sp,
-                                         context.resources.displayMetrics)
-    }
-
-    @JvmStatic
-    fun getDimension(context: Context, id: Int): Float {
-        val dim = context.resources.getDimension(id)
-        if (fixedResolution != null) {
-            val actualDensity = context.resources.displayMetrics.density
-            return dim / actualDensity * fixedResolution!!
-        }
-        return dim
-    }
-
-    fun setupEditorAction(parent: ViewGroup,
-                          listener: OnEditorActionListener) {
-        for (i in 0 until parent.childCount) {
-            val child = parent.getChildAt(i)
-            if (child is ViewGroup) setupEditorAction(child, listener)
-            if (child is TextView) child.setOnEditorActionListener(listener)
-        }
-    }
-
-    fun isLayoutRtl(view: View?): Boolean {
-        return ViewCompat.getLayoutDirection(view!!) ==
-                ViewCompat.LAYOUT_DIRECTION_RTL
-    }
-}

android/android-base/src/main/java/org/isoron/androidbase/utils/StyledResources.java

@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.androidbase.utils;
+
+import android.content.*;
+import android.content.res.*;
+import android.graphics.drawable.*;
+
+import androidx.annotation.AttrRes;
+import androidx.annotation.NonNull;
+
+import org.isoron.androidbase.*;
+
+public class StyledResources
+{
+    private static Integer fixedTheme;
+
+    private final Context context;
+
+    public StyledResources(@NonNull Context context)
+    {
+        this.context = context;
+    }
+
+    public static void setFixedTheme(Integer theme)
+    {
+        fixedTheme = theme;
+    }
+
+    public boolean getBoolean(@AttrRes int attrId)
+    {
+        TypedArray ta = getTypedArray(attrId);
+        boolean bool = ta.getBoolean(0, false);
+        ta.recycle();
+
+        return bool;
+    }
+
+    public int getDimension(@AttrRes int attrId)
+    {
+        TypedArray ta = getTypedArray(attrId);
+        int dim = ta.getDimensionPixelSize(0, 0);
+        ta.recycle();
+
+        return dim;
+    }
+
+    public int getColor(@AttrRes int attrId)
+    {
+        TypedArray ta = getTypedArray(attrId);
+        int color = ta.getColor(0, 0);
+        ta.recycle();
+
+        return color;
+    }
+
+    public Drawable getDrawable(@AttrRes int attrId)
+    {
+        TypedArray ta = getTypedArray(attrId);
+        Drawable drawable = ta.getDrawable(0);
+        ta.recycle();
+
+        return drawable;
+    }
+
+    public float getFloat(@AttrRes int attrId)
+    {
+        TypedArray ta = getTypedArray(attrId);
+        float f = ta.getFloat(0, 0);
+        ta.recycle();
+
+        return f;
+    }
+
+    public int[] getPalette()
+    {
+        int resourceId = getResource(R.attr.palette);
+        if (resourceId < 0) throw new RuntimeException("resource not found");
+
+        return context.getResources().getIntArray(resourceId);
+    }
+
+    public int getResource(@AttrRes int attrId)
+    {
+        TypedArray ta = getTypedArray(attrId);
+        int resourceId = ta.getResourceId(0, -1);
+        ta.recycle();
+
+        return resourceId;
+    }
+
+    private TypedArray getTypedArray(@AttrRes int attrId)
+    {
+        int[] attrs = new int[]{ attrId };
+
+        if (fixedTheme != null)
+            return context.getTheme().obtainStyledAttributes(fixedTheme, attrs);
+
+        return context.obtainStyledAttributes(attrs);
+    }
+}

android/android-base/src/main/java/org/isoron/androidbase/utils/StyledResources.kt

@@ -1,93 +0,0 @@
-/*
- * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.isoron.androidbase.utils
-
-import android.content.Context
-import android.content.res.TypedArray
-import android.graphics.drawable.Drawable
-import androidx.annotation.AttrRes
-import org.isoron.androidbase.R
-
-class StyledResources(private val context: Context) {
-
-    fun getBoolean(@AttrRes attrId: Int): Boolean {
-        val ta = getTypedArray(attrId)
-        val bool = ta.getBoolean(0, false)
-        ta.recycle()
-        return bool
-    }
-
-    fun getDimension(@AttrRes attrId: Int): Int {
-        val ta = getTypedArray(attrId)
-        val dim = ta.getDimensionPixelSize(0, 0)
-        ta.recycle()
-        return dim
-    }
-
-    fun getColor(@AttrRes attrId: Int): Int {
-        val ta = getTypedArray(attrId)
-        val color = ta.getColor(0, 0)
-        ta.recycle()
-        return color
-    }
-
-    fun getDrawable(@AttrRes attrId: Int): Drawable? {
-        val ta = getTypedArray(attrId)
-        val drawable = ta.getDrawable(0)
-        ta.recycle()
-        return drawable
-    }
-
-    fun getFloat(@AttrRes attrId: Int): Float {
-        val ta = getTypedArray(attrId)
-        val f = ta.getFloat(0, 0f)
-        ta.recycle()
-        return f
-    }
-
-    fun getPalette(): IntArray {
-        val resourceId = getResource(R.attr.palette)
-        if (resourceId < 0) throw RuntimeException("palette resource not found")
-        return context.resources.getIntArray(resourceId)
-    }
-
-    fun getResource(@AttrRes attrId: Int): Int {
-        val ta = getTypedArray(attrId)
-        val resourceId = ta.getResourceId(0, -1)
-        ta.recycle()
-        return resourceId
-    }
-
-    private fun getTypedArray(@AttrRes attrId: Int): TypedArray {
-        val attrs = intArrayOf(attrId)
-        if (fixedTheme != null) {
-            return context.theme.obtainStyledAttributes(fixedTheme!!, attrs)
-        }
-        return context.obtainStyledAttributes(attrs)
-    }
-
-    companion object {
-        private var fixedTheme: Int? = null
-
-        @JvmStatic
-        fun setFixedTheme(theme: Int?) {
-            fixedTheme = theme
-        }
-    }
-}

android/android-pickers/src/main/java/com/android/datetimepicker/time/AmPmCirclesView.java

@@ -41,8 +41,8 @@ public class AmPmCirclesView extends View {
     private final Paint mPaint = new Paint();
     private int mSelectedAlpha;
     private int mUnselectedColor;
-    protected int mAmPmTextColor = Color.WHITE;
-    protected int mSelectedColor = Color.BLUE;
+    private int mAmPmTextColor;
+    private int mSelectedColor;
     private float mCircleRadiusMultiplier;
     private float mAmPmCircleRadiusMultiplier;
     private String mAmText;
@@ -73,8 +73,8 @@ public class AmPmCirclesView extends View {
 
         Resources res = context.getResources();
         mUnselectedColor = res.getColor(R.color.white);
-        //mSelectedColor = res.getColor(R.color.blue);
-        //mAmPmTextColor = res.getColor(R.color.ampm_text_color);
+        mSelectedColor = res.getColor(R.color.blue);
+        mAmPmTextColor = res.getColor(R.color.ampm_text_color);
         mSelectedAlpha = SELECTED_ALPHA;
         String typefaceFamily = res.getString(R.string.sans_serif);
         Typeface tf = Typeface.create(typefaceFamily, Typeface.NORMAL);
@@ -105,8 +105,8 @@ public class AmPmCirclesView extends View {
             mSelectedAlpha = SELECTED_ALPHA_THEME_DARK;
         } else {
             mUnselectedColor = res.getColor(R.color.white);
-            //mSelectedColor = res.getColor(R.color.blue);
-            //mAmPmTextColor = res.getColor(R.color.ampm_text_color);
+            mSelectedColor = res.getColor(R.color.blue);
+            mAmPmTextColor = res.getColor(R.color.ampm_text_color);
             mSelectedAlpha = SELECTED_ALPHA;
         }
     }

android/android-pickers/src/main/java/com/android/datetimepicker/time/RadialPickerLayout.java

@@ -84,14 +84,6 @@ public class RadialPickerLayout extends FrameLayout implements OnTouchListener {
     private AnimatorSet mTransition;
     private Handler mHandler = new Handler();
 
-    public void setColor(int selectedColor)
-    {
-        mHourRadialSelectorView.mPaint.setColor(selectedColor);
-        mMinuteRadialSelectorView.mPaint.setColor(selectedColor);
-        mAmPmCirclesView.mSelectedColor = selectedColor;
-        mAmPmCirclesView.mAmPmTextColor = selectedColor;
-    }
-
     public interface OnValueSelectedListener {
         void onValueSelected(int pickerIndex, int newValue, boolean autoAdvance);
     }

android/android-pickers/src/main/java/com/android/datetimepicker/time/RadialSelectorView.java

@@ -40,7 +40,7 @@ public class RadialSelectorView extends View {
     // Alpha level for the line.
     private static final int FULL_ALPHA = Utils.FULL_ALPHA;
 
-    protected final Paint mPaint = new Paint();
+    private final Paint mPaint = new Paint();
 
     private boolean mIsInitialized;
     private boolean mDrawValuesReady;
@@ -96,6 +96,8 @@ public class RadialSelectorView extends View {
 
         Resources res = context.getResources();
 
+        int blue = res.getColor(R.color.blue);
+        mPaint.setColor(blue);
         mPaint.setAntiAlias(true);
         mSelectionAlpha = SELECTED_ALPHA;
 
@@ -137,11 +139,15 @@ public class RadialSelectorView extends View {
 
     /* package */ void setTheme(Context context, boolean themeDark) {
         Resources res = context.getResources();
+        int color;
         if (themeDark) {
+            color = res.getColor(R.color.red);
             mSelectionAlpha = SELECTED_ALPHA_THEME_DARK;
         } else {
+            color = res.getColor(R.color.blue);
             mSelectionAlpha = SELECTED_ALPHA;
         }
+        mPaint.setColor(color);
     }
 
     /**

android/android-pickers/src/main/java/com/android/datetimepicker/time/TimePickerDialog.java

@@ -23,9 +23,7 @@ import android.app.*;
 import android.content.*;
 import android.content.res.*;
 import android.os.*;
-
 import androidx.appcompat.app.*;
-
 import android.util.*;
 import android.view.*;
 import android.view.View.*;
@@ -41,8 +39,7 @@ import java.util.*;
 /**
  * Dialog to set a time.
  */
-public class TimePickerDialog extends AppCompatDialogFragment implements OnValueSelectedListener
-{
+public class TimePickerDialog extends AppCompatDialogFragment implements OnValueSelectedListener{
     private static final String TAG = "TimePickerDialog";
 
     private static final String KEY_HOUR_OF_DAY = "hour_of_day";
@@ -52,7 +49,6 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
     private static final String KEY_IN_KB_MODE = "in_kb_mode";
     private static final String KEY_TYPED_TIMES = "typed_times";
     private static final String KEY_DARK_THEME = "dark_theme";
-    private static final String KEY_SELECTED_COLOR = "selected_color";
 
     public static final int HOUR_INDEX = 0;
     public static final int MINUTE_INDEX = 1;
@@ -112,8 +108,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
      * The callback interface used to indicate the user is done filling in
      * the time (they clicked on the 'Set' button).
      */
-    public interface OnTimeSetListener
-    {
+    public interface OnTimeSetListener {
 
         /**
          * @param view The view associated with this listener.
@@ -122,40 +117,28 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
          */
         void onTimeSet(RadialPickerLayout view, int hourOfDay, int minute);
         
-        default void onTimeCleared(RadialPickerLayout view)
-        {
-        }
+        default void onTimeCleared(RadialPickerLayout view) {}
     }
 
-    public TimePickerDialog()
-    {
+    public TimePickerDialog() {
         // Empty constructor required for dialog fragment.
     }
 
     @SuppressLint("Java")
     public TimePickerDialog(Context context, int theme, OnTimeSetListener callback,
-                            int hourOfDay, int minute, boolean is24HourMode)
-    {
+            int hourOfDay, int minute, boolean is24HourMode) {
         // Empty constructor required for dialog fragment.
     }
 
     public static TimePickerDialog newInstance(OnTimeSetListener callback,
-                                               int hourOfDay,
-                                               int minute,
-                                               boolean is24HourMode,
-                                               int color)
-    {
+            int hourOfDay, int minute, boolean is24HourMode) {
         TimePickerDialog ret = new TimePickerDialog();
-        ret.initialize(callback, hourOfDay, minute, is24HourMode, color);
+        ret.initialize(callback, hourOfDay, minute, is24HourMode);
         return ret;
     }
 
     public void initialize(OnTimeSetListener callback,
-                           int hourOfDay,
-                           int minute,
-                           boolean is24HourMode,
-                           int color)
-    {
+            int hourOfDay, int minute, boolean is24HourMode) {
         mCallback = callback;
 
         mInitialHourOfDay = hourOfDay;
@@ -163,37 +146,31 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         mIs24HourMode = is24HourMode;
         mInKbMode = false;
         mThemeDark = false;
-        mSelectedColor = color;
     }
 
     /**
      * Set a dark or light theme. NOTE: this will only take effect for the next onCreateView.
      */
-    public void setThemeDark(boolean dark)
-    {
+    public void setThemeDark(boolean dark) {
         mThemeDark = dark;
     }
 
-    public boolean isThemeDark()
-    {
+    public boolean isThemeDark() {
         return mThemeDark;
     }
 
-    public void setOnTimeSetListener(OnTimeSetListener callback)
-    {
+    public void setOnTimeSetListener(OnTimeSetListener callback) {
         mCallback = callback;
     }
 
-    public void setStartTime(int hourOfDay, int minute)
-    {
+    public void setStartTime(int hourOfDay, int minute) {
         mInitialHourOfDay = hourOfDay;
         mInitialMinute = minute;
         mInKbMode = false;
     }
 
     @Override
-    public void onCreate(Bundle savedInstanceState)
-    {
+    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         if (savedInstanceState != null && savedInstanceState.containsKey(KEY_HOUR_OF_DAY)
                     && savedInstanceState.containsKey(KEY_MINUTE)
@@ -203,7 +180,6 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
             mIs24HourMode = savedInstanceState.getBoolean(KEY_IS_24_HOUR_VIEW);
             mInKbMode = savedInstanceState.getBoolean(KEY_IN_KB_MODE);
             mThemeDark = savedInstanceState.getBoolean(KEY_DARK_THEME);
-            mSelectedColor = savedInstanceState.getInt(KEY_SELECTED_COLOR);
         }
     }
 
@@ -215,8 +191,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
-                             Bundle savedInstanceState)
-    {
+            Bundle savedInstanceState) {
         getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE);
 
         View view = inflater.inflate(R.layout.time_picker_dialog, null);
@@ -228,7 +203,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         mSelectHours = res.getString(R.string.select_hours);
         mMinutePickerDescription = res.getString(R.string.minute_picker_description);
         mSelectMinutes = res.getString(R.string.select_minutes);
-        //mSelectedColor = res.getColor(mThemeDark ? R.color.red : R.color.blue);
+        mSelectedColor = res.getColor(mThemeDark? R.color.red : R.color.blue);
         mUnselectedColor = res.getColor(mThemeDark? R.color.white : R.color.numbers_text_color);
 
         mHourView = (TextView) view.findViewById(R.id.hours);
@@ -248,7 +223,6 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         mTimePicker = (RadialPickerLayout) view.findViewById(R.id.time_picker);
         mTimePicker.setOnValueSelectedListener(this);
         mTimePicker.setOnKeyListener(keyboardListener);
-        mTimePicker.setColor(mSelectedColor);
         mTimePicker.initialize(getActivity(), mHapticFeedbackController, mInitialHourOfDay,
             mInitialMinute, mIs24HourMode);
 
@@ -260,31 +234,25 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         setCurrentItemShowing(currentItemShowing, false, true, true);
         mTimePicker.invalidate();
 
-        mHourView.setOnClickListener(new OnClickListener()
-        {
+        mHourView.setOnClickListener(new OnClickListener() {
             @Override
-            public void onClick(View v)
-            {
+            public void onClick(View v) {
                 setCurrentItemShowing(HOUR_INDEX, true, false, true);
                 tryVibrate();
             }
         });
-        mMinuteView.setOnClickListener(new OnClickListener()
-        {
+        mMinuteView.setOnClickListener(new OnClickListener() {
             @Override
-            public void onClick(View v)
-            {
+            public void onClick(View v) {
                 setCurrentItemShowing(MINUTE_INDEX, true, false, true);
                 tryVibrate();
             }
         });
 
         mDoneButton = (TextView) view.findViewById(R.id.done_button);
-        mDoneButton.setOnClickListener(new OnClickListener()
-        {
+        mDoneButton.setOnClickListener(new OnClickListener() {
             @Override
-            public void onClick(View v)
-            {
+            public void onClick(View v) {
                 if (mInKbMode && isTypedTimeFullyLegal()) {
                     finishKbMode(false);
                 } else {
@@ -326,11 +294,9 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         } else {
             mAmPmTextView.setVisibility(View.VISIBLE);
             updateAmPmDisplay(mInitialHourOfDay < 12? AM : PM);
-            mAmPmHitspace.setOnClickListener(new OnClickListener()
-            {
+            mAmPmHitspace.setOnClickListener(new OnClickListener() {
                 @Override
-                public void onClick(View v)
-                {
+                public void onClick(View v) {
                     tryVibrate();
                     int amOrPm = mTimePicker.getIsCurrentlyAmOrPm();
                     if (amOrPm == AM) {
@@ -362,56 +328,51 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
             mTypedTimes = new ArrayList<Integer>();
         }
 
+        // Set the theme at the end so that the initialize()s above don't counteract the theme.
+        mTimePicker.setTheme(getActivity().getApplicationContext(), mThemeDark);
+        // Prepare some palette to use.
+        int white = res.getColor(R.color.white);
+        int circleBackground = res.getColor(R.color.circle_background);
+        int line = res.getColor(R.color.line_background);
+        int timeDisplay = res.getColor(R.color.numbers_text_color);
+        ColorStateList doneTextColor = res.getColorStateList(R.color.done_text_color);
+        int doneBackground = R.drawable.done_background_color;
 
-//        // Set the theme at the end so that the initialize()s above don't counteract the theme.
-//        mTimePicker.setTheme(getActivity().getApplicationContext(), mThemeDark);
-//        // Prepare some palette to use.
-//        int white = res.getColor(R.color.white);
-//        int circleBackground = res.getColor(R.color.circle_background);
-//        int line = res.getColor(R.color.line_background);
-//        int timeDisplay = res.getColor(R.color.numbers_text_color);
-//        ColorStateList doneTextColor = res.getColorStateList(R.color.done_text_color);
-//        int doneBackground = R.drawable.done_background_color;
-//
-//        int darkGray = res.getColor(R.color.dark_gray);
-//        int lightGray = res.getColor(R.color.light_gray);
-//        int darkLine = res.getColor(R.color.line_dark);
-//        ColorStateList darkDoneTextColor = res.getColorStateList(R.color.done_text_color_dark);
-//        int darkDoneBackground = R.drawable.done_background_color_dark;
+        int darkGray = res.getColor(R.color.dark_gray);
+        int lightGray = res.getColor(R.color.light_gray);
+        int darkLine = res.getColor(R.color.line_dark);
+        ColorStateList darkDoneTextColor = res.getColorStateList(R.color.done_text_color_dark);
+        int darkDoneBackground = R.drawable.done_background_color_dark;
 
         // Set the palette for each view based on the theme.
-//        view.findViewById(R.id.time_display_background).setBackgroundColor(mThemeDark? darkGray : white);
-//        view.findViewById(R.id.time_display).setBackgroundColor(mThemeDark? darkGray : white);
-//        ((TextView) view.findViewById(R.id.separator)).setTextColor(mThemeDark? white : timeDisplay);
-//        ((TextView) view.findViewById(R.id.ampm_label)).setTextColor(mThemeDark? white : timeDisplay);
-//        view.findViewById(R.id.line).setBackgroundColor(mThemeDark? darkLine : line);
-//        mDoneButton.setTextColor(mThemeDark? darkDoneTextColor : doneTextColor);
-//        mTimePicker.setBackgroundColor(mThemeDark? lightGray : circleBackground);
-//        mDoneButton.setBackgroundResource(mThemeDark? darkDoneBackground : doneBackground);
+        view.findViewById(R.id.time_display_background).setBackgroundColor(mThemeDark? darkGray : white);
+        view.findViewById(R.id.time_display).setBackgroundColor(mThemeDark? darkGray : white);
+        ((TextView) view.findViewById(R.id.separator)).setTextColor(mThemeDark? white : timeDisplay);
+        ((TextView) view.findViewById(R.id.ampm_label)).setTextColor(mThemeDark? white : timeDisplay);
+        view.findViewById(R.id.line).setBackgroundColor(mThemeDark? darkLine : line);
+        mDoneButton.setTextColor(mThemeDark? darkDoneTextColor : doneTextColor);
+        mTimePicker.setBackgroundColor(mThemeDark? lightGray : circleBackground);
+        mDoneButton.setBackgroundResource(mThemeDark? darkDoneBackground : doneBackground);
         return view;
     }
 
     @Override
-    public void onResume()
-    {
+    public void onResume() {
         super.onResume();
         mHapticFeedbackController.start();
     }
 
     @Override
-    public void onPause()
-    {
+    public void onPause() {
         super.onPause();
         mHapticFeedbackController.stop();
     }
 
-    public void tryVibrate()
-    {
+    public void tryVibrate() {
         mHapticFeedbackController.tryVibrate();
     }
 
-    private void updateAmPmDisplay(int amOrPm)
-    {
+    private void updateAmPmDisplay(int amOrPm) {
         if (amOrPm == AM) {
             mAmPmTextView.setText(mAmText);
             Utils.tryAccessibilityAnnounce(mTimePicker, mAmText);
@@ -426,8 +387,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
     }
 
     @Override
-    public void onSaveInstanceState(Bundle outState)
-    {
+    public void onSaveInstanceState(Bundle outState) {
         if (mTimePicker != null) {
             outState.putInt(KEY_HOUR_OF_DAY, mTimePicker.getHours());
             outState.putInt(KEY_MINUTE, mTimePicker.getMinutes());
@@ -438,7 +398,6 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
                 outState.putIntegerArrayList(KEY_TYPED_TIMES, mTypedTimes);
             }
             outState.putBoolean(KEY_DARK_THEME, mThemeDark);
-            outState.putInt(KEY_SELECTED_COLOR, mSelectedColor);
         }
     }
 
@@ -446,8 +405,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
      * Called by the picker for updating the header display.
      */
     @Override
-    public void onValueSelected(int pickerIndex, int newValue, boolean autoAdvance)
-    {
+    public void onValueSelected(int pickerIndex, int newValue, boolean autoAdvance) {
         if (pickerIndex == HOUR_INDEX) {
             setHour(newValue, false);
             String announcement = String.format("%d", newValue);
@@ -472,8 +430,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         }
     }
 
-    private void setHour(int value, boolean announce)
-    {
+    private void setHour(int value, boolean announce) {
         String format;
         if (mIs24HourMode) {
             format = "%02d";
@@ -493,8 +450,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         }
     }
 
-    private void setMinute(int value)
-    {
+    private void setMinute(int value) {
         if (value == 60) {
             value = 0;
         }
@@ -506,8 +462,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
 
     // Show either Hours or Minutes.
     private void setCurrentItemShowing(int index, boolean animateCircle, boolean delayLabelAnimate,
-                                       boolean announce)
-    {
+            boolean announce) {
         mTimePicker.setCurrentItemShowing(index, animateCircle);
 
         TextView labelToAnimate;
@@ -544,12 +499,10 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
 
     /**
      * For keyboard mode, processes key events.
-     *
      * @param keyCode the pressed key.
      * @return true if the key was successfully processed, false otherwise.
      */
-    private boolean processKeyUp(int keyCode)
-    {
+    private boolean processKeyUp(int keyCode) {
         if (keyCode == KeyEvent.KEYCODE_ESCAPE || keyCode == KeyEvent.KEYCODE_BACK) {
             dismiss();
             return true;
@@ -619,13 +572,11 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
     /**
      * Try to start keyboard mode with the specified key, as long as the timepicker is not in the
      * middle of a touch-event.
-     *
      * @param keyCode The key to use as the first press. Keyboard mode will not be started if the
      * key is not legal to start with. Or, pass in -1 to get into keyboard mode without a starting
      * key.
      */
-    private void tryStartingKbMode(int keyCode)
-    {
+    private void tryStartingKbMode(int keyCode) {
         if (mTimePicker.trySettingInputEnabled(false) &&
                 (keyCode == -1 || addKeyIfLegal(keyCode))) {
             mInKbMode = true;
@@ -634,8 +585,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         }
     }
 
-    private boolean addKeyIfLegal(int keyCode)
-    {
+    private boolean addKeyIfLegal(int keyCode) {
         // If we're in 24hour mode, we'll need to check if the input is full. If in AM/PM mode,
         // we'll need to see if AM/PM have been typed.
         if ((mIs24HourMode && mTypedTimes.size() == 4) ||
@@ -667,8 +617,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
      * Traverse the tree to see if the keys that have been typed so far are legal as is,
      * or may become legal as more keys are typed (excluding backspace).
      */
-    private boolean isTypedTimeLegalSoFar()
-    {
+    private boolean isTypedTimeLegalSoFar() {
         Node node = mLegalTimesTree;
         for (int keyCode : mTypedTimes) {
             node = node.canReach(keyCode);
@@ -682,8 +631,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
     /**
      * Check if the time that has been typed so far is completely legal, as is.
      */
-    private boolean isTypedTimeFullyLegal()
-    {
+    private boolean isTypedTimeFullyLegal() {
         if (mIs24HourMode) {
             // For 24-hour mode, the time is legal if the hours and minutes are each legal. Note:
             // getEnteredTime() will ONLY call isTypedTimeFullyLegal() when NOT in 24hour mode.
@@ -697,8 +645,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         }
     }
 
-    private int deleteLastTypedKey()
-    {
+    private int deleteLastTypedKey() {
         int deleted = mTypedTimes.remove(mTypedTimes.size() - 1);
         if (!isTypedTimeFullyLegal()) {
             mDoneButton.setEnabled(false);
@@ -708,11 +655,9 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
 
     /**
      * Get out of keyboard mode. If there is nothing in typedTimes, revert to TimePicker's time.
-     *
      * @param changeDisplays If true, update the displays with the relevant time.
      */
-    private void finishKbMode(boolean updateDisplays)
-    {
+    private void finishKbMode(boolean updateDisplays) {
         mInKbMode = false;
         if (!mTypedTimes.isEmpty()) {
             int values[] = getEnteredTime(null);
@@ -732,12 +677,10 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
      * Update the hours, minutes, and AM/PM displays with the typed times. If the typedTimes is
      * empty, either show an empty display (filled with the placeholder text), or update from the
      * timepicker's values.
-     *
      * @param allowEmptyDisplay if true, then if the typedTimes is empty, use the placeholder text.
      * Otherwise, revert to the timepicker's values.
      */
-    private void updateDisplay(boolean allowEmptyDisplay)
-    {
+    private void updateDisplay(boolean allowEmptyDisplay) {
         if (!allowEmptyDisplay && mTypedTimes.isEmpty()) {
             int hour = mTimePicker.getHours();
             int minute = mTimePicker.getMinutes();
@@ -769,8 +712,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         }
     }
 
-    private static int getValFromKeyCode(int keyCode)
-    {
+    private static int getValFromKeyCode(int keyCode) {
         switch (keyCode) {
             case KeyEvent.KEYCODE_0:
                 return 0;
@@ -799,15 +741,13 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
 
     /**
      * Get the currently-entered time, as integer values of the hours and minutes typed.
-     *
      * @param enteredZeros A size-2 boolean array, which the caller should initialize, and which
      * may then be used for the caller to know whether zeros had been explicitly entered as either
      * hours of minutes. This is helpful for deciding whether to show the dashes, or actual 0's.
      * @return A size-3 int array. The first value will be the hours, the second value will be the
      * minutes, and the third will be either TimePickerDialog.AM or TimePickerDialog.PM.
      */
-    private int[] getEnteredTime(Boolean[] enteredZeros)
-    {
+    private int[] getEnteredTime(Boolean[] enteredZeros) {
         int amOrPm = -1;
         int startIndex = 1;
         if (!mIs24HourMode && isTypedTimeFullyLegal()) {
@@ -847,8 +787,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
     /**
      * Get the keycode value for AM and PM in the current language.
      */
-    private int getAmOrPmKeyCode(int amOrPm)
-    {
+    private int getAmOrPmKeyCode(int amOrPm) {
         // Cache the codes.
         if (mAmKeyCode == -1 || mPmKeyCode == -1) {
             // Find the first character in the AM/PM text that is unique.
@@ -883,8 +822,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
     /**
      * Create a tree for deciding what keys can legally be typed.
      */
-    private void generateLegalTimesTree()
-    {
+    private void generateLegalTimesTree() {
         // Create a quick cache of numbers to their keycodes.
         int k0 = KeyEvent.KEYCODE_0;
         int k1 = KeyEvent.KEYCODE_1;
@@ -940,7 +878,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
             // When the first digit is 2, the second digit may be 4-5.
             secondDigit = new Node(k4, k5);
             firstDigit.addChild(secondDigit);
-            // We must now be followed by the last minute digit. E.g. 2:40, 2:53.
+            // We must now be followd by the last minute digit. E.g. 2:40, 2:53.
             secondDigit.addChild(minuteSecondDigit);
 
             // The first digit may be 3-9.
@@ -1017,24 +955,20 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
      * mLegalKeys represents the keys that can be typed to get to the node.
      * mChildren are the children that can be reached from this node.
      */
-    private class Node
-    {
+    private class Node {
         private int[] mLegalKeys;
         private ArrayList<Node> mChildren;
 
-        public Node(int... legalKeys)
-        {
+        public Node(int... legalKeys) {
             mLegalKeys = legalKeys;
             mChildren = new ArrayList<Node>();
         }
 
-        public void addChild(Node child)
-        {
+        public void addChild(Node child) {
             mChildren.add(child);
         }
 
-        public boolean containsKey(int key)
-        {
+        public boolean containsKey(int key) {
             for (int i = 0; i < mLegalKeys.length; i++) {
                 if (mLegalKeys[i] == key) {
                     return true;
@@ -1043,8 +977,7 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
             return false;
         }
 
-        public Node canReach(int key)
-        {
+        public Node canReach(int key) {
             if (mChildren == null) {
                 return null;
             }
@@ -1057,11 +990,9 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         }
     }
 
-    private class KeyboardListener implements OnKeyListener
-    {
+    private class KeyboardListener implements OnKeyListener {
         @Override
-        public boolean onKey(View v, int keyCode, KeyEvent event)
-        {
+        public boolean onKey(View v, int keyCode, KeyEvent event) {
             if (event.getAction() == KeyEvent.ACTION_UP) {
                 return processKeyUp(keyCode);
             }
@@ -1069,14 +1000,12 @@ public class TimePickerDialog extends AppCompatDialogFragment implements OnValue
         }
     }
 
-    public void setDismissListener(DialogInterface.OnDismissListener listener)
-    {
+    public void setDismissListener( DialogInterface.OnDismissListener listener ) {
         dismissListener = listener;
     }
 
     @Override
-    public void onDismiss(DialogInterface dialog)
-    {
+    public void onDismiss(DialogInterface dialog) {
         super.onDismiss(dialog);
         if( dismissListener != null )
             dismissListener.onDismiss(dialog);

android/android-pickers/src/main/res/layout/time_picker_dialog.xml

@@ -49,33 +49,33 @@
         android:layout_height="1dip"
         android:background="@color/line_background" />
 
-    <androidx.appcompat.widget.LinearLayoutCompat
+    <LinearLayout
         style="?android:attr/buttonBarStyle"
         android:layout_width="@dimen/date_picker_component_width"
         android:layout_height="wrap_content"
         android:orientation="horizontal" >
 
-        <androidx.appcompat.widget.AppCompatButton
-            style="?android:attr/buttonBarButtonStyle"
+        <Button
             android:id="@+id/clear_button"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
+            android:background="@drawable/done_background_color"
             android:minHeight="48dp"
-            android:textColor="#333"
             android:text="@string/clear_label"
+            android:textColor="@color/done_text_color"
             android:textSize="@dimen/done_label_size" />
 
-        <androidx.appcompat.widget.AppCompatButton
-            style="?android:attr/buttonBarButtonStyle"
+        <Button
             android:id="@+id/done_button"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
+            android:background="@drawable/done_background_color"
             android:minHeight="48dp"
-            android:textColor="#333"
             android:text="@string/done_label"
+            android:textColor="@color/done_text_color"
             android:textSize="@dimen/done_label_size" />
-    </androidx.appcompat.widget.LinearLayoutCompat>
+    </LinearLayout>
 
 </LinearLayout>

android/build.sh

@@ -71,12 +71,12 @@ build_apk() {
 
     if [ ! -z $RELEASE ]; then
         log_info "Building release APK"
-        $GRADLE assembleRelease
+        ./gradlew assembleRelease
         cp -v uhabits-android/build/outputs/apk/release/uhabits-android-release.apk build/loop-$VERSION-release.apk
     fi
 
     log_info "Building debug APK"
-    $GRADLE assembleDebug --stacktrace || fail
+    ./gradlew assembleDebug || fail
     cp -v uhabits-android/build/outputs/apk/debug/uhabits-android-debug.apk build/loop-$VERSION-debug.apk
 }
 
@@ -212,7 +212,6 @@ parse_opts() {
 }
 
 remove_build_dir() {
-    rm -rfv .gradle
     rm -rfv build
     rm -rfv android-base/build
     rm -rfv android-pickers/build
@@ -232,10 +231,7 @@ case "$1" in
 
     medium-tests)
         shift; parse_opts $*
-	for attempt in {1..3}; do
-		(run_tests medium) && exit 0
-	done
-	exit 1
+        run_tests medium
         ;;
 
     large-tests)

android/gradle.properties

@@ -1,17 +1,15 @@
-VERSION_CODE = 20000
-VERSION_NAME = 2.0.0-alpha
+VERSION_CODE = 10811
+VERSION_NAME = 1.8.11
 
-MIN_SDK_VERSION = 23
+MIN_SDK_VERSION = 21
 TARGET_SDK_VERSION = 29
 COMPILE_SDK_VERSION = 29
 
 DAGGER_VERSION = 2.25.4
-KOTLIN_VERSION = 1.4.0
-KX_COROUTINES_VERSION = 1.4.2
+KOTLIN_VERSION = 1.3.61
 SUPPORT_LIBRARY_VERSION = 28.0.0
 AUTO_FACTORY_VERSION = 1.0-beta6
-BUILD_TOOLS_VERSION = 4.1.0
-KTOR_VERSION=1.4.2
+BUILD_TOOLS_VERSION = 3.5.3
 
 org.gradle.parallel=false
 org.gradle.daemon=true

android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,5 @@
-#Sat Nov 28 09:55:24 CST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip

android/tools/coverage-badge/badge.py

@@ -55,7 +55,7 @@ def get_total(report):
 
 def get_color(total):
     """
-    Return color for current coverage percent
+    Return color for current coverage precent
     """
     try:
         xtotal = int(total)

android/uhabits-android/build.gradle

@@ -4,7 +4,6 @@ plugins {
     id 'kotlin-android'
     id 'kotlin-kapt'
     id 'com.github.triplet.play' version '2.6.2'
-    id 'kotlin-android-extensions'
 }
 
 android {
@@ -53,7 +52,6 @@ android {
     }
 
     compileOptions {
-        coreLibraryDesugaringEnabled true
         targetCompatibility JavaVersion.VERSION_1_8
         sourceCompatibility JavaVersion.VERSION_1_8
     }
@@ -71,10 +69,6 @@ android {
     sourceSets {
         main.assets.srcDirs += '../uhabits-core/src/main/resources/'
     }
-
-    buildFeatures {
-        viewBinding true
-    }
 }
 
 dependencies {
@@ -93,19 +87,7 @@ dependencies {
     implementation "com.google.code.gson:gson:2.8.5"
     implementation "com.google.code.findbugs:jsr305:3.0.2"
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$KOTLIN_VERSION"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$KX_COROUTINES_VERSION"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$KX_COROUTINES_VERSION"
-    implementation "androidx.constraintlayout:constraintlayout:2.0.0-beta4"
-    implementation 'com.google.zxing:core:3.4.1'
-    implementation "io.ktor:ktor-client-core:$KTOR_VERSION"
-    implementation "io.ktor:ktor-client-android:$KTOR_VERSION"
-    implementation "io.ktor:ktor-client-json:$KTOR_VERSION"
-    implementation "io.ktor:ktor-client-jackson:$KTOR_VERSION"
-    implementation "com.google.guava:guava:30.0-android"
 
-    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.1'
-
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     compileOnly "javax.annotation:jsr250-api:1.0"
     compileOnly "com.google.auto.factory:auto-factory:$AUTO_FACTORY_VERSION"
     kapt "com.google.dagger:dagger-compiler:$DAGGER_VERSION"
@@ -122,8 +104,7 @@ dependencies {
     androidTestImplementation 'androidx.annotation:annotation:1.0.0'
     androidTestImplementation 'androidx.test:rules:1.1.1'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation "io.ktor:ktor-client-mock:$KTOR_VERSION"
-    androidTestImplementation "io.ktor:ktor-jackson:$KTOR_VERSION"
+    androidTestImplementation "com.google.guava:guava:24.1-android"
     androidTestImplementation project(":uhabits-core")
     kaptAndroidTest "com.google.dagger:dagger-compiler:$DAGGER_VERSION"