Implement runtime notification permission; bump targetSdk to 33

uhabits-android/build.gradle.kts

@@ -42,13 +42,13 @@ kotlin {
 
 android {
 
-    compileSdk = 32
+    compileSdk = 33
 
     defaultConfig {
         versionCode = 20200
         versionName = "2.2.0"
         minSdk = 28
-        targetSdk = 32
+        targetSdk = 33
         applicationId = "org.isoron.uhabits"
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }

uhabits-android/src/androidTest/java/org/isoron/uhabits/activities/common/views/FrequencyChartTest.kt

@@ -18,6 +18,7 @@
  */
 package org.isoron.uhabits.activities.common.views
 
+import android.view.MotionEvent
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.filters.MediumTest
 import org.isoron.uhabits.BaseViewTest
@@ -52,7 +53,8 @@ class FrequencyChartTest : BaseViewTest() {
     @Test
     @Throws(Throwable::class)
     fun testRender_withDataOffset() {
-        view.onScroll(null, null, -dpToPixels(150), 0f)
+        val e = MotionEvent.obtain(0, 0, 0, 0f, 0f, 0)
+        view.onScroll(e, e, -dpToPixels(150), 0f)
         view.invalidate()
         assertRenders(view, BASE_PATH + "renderDataOffset.png")
     }

uhabits-android/src/androidTest/java/org/isoron/uhabits/activities/common/views/ScoreChartTest.kt

@@ -18,6 +18,7 @@
  */
 package org.isoron.uhabits.activities.common.views
 
+import android.view.MotionEvent
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.filters.MediumTest
 import org.isoron.uhabits.BaseViewTest
@@ -63,7 +64,8 @@ class ScoreChartTest : BaseViewTest() {
     @Test
     @Throws(Throwable::class)
     fun testRender_withDataOffset() {
-        view.onScroll(null, null, -dpToPixels(150), 0f)
+        val e = MotionEvent.obtain(0, 0, 0, 0f, 0f, 0)
+        view.onScroll(e, e, -dpToPixels(150), 0f)
         view.invalidate()
         assertRenders(view, BASE_PATH + "renderDataOffset.png")
     }

uhabits-android/src/main/AndroidManifest.xml

@@ -22,6 +22,7 @@
     <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
 
     <application
         android:name=".HabitsApplication"

uhabits-android/src/main/java/org/isoron/platform/gui/AndroidDataView.kt

@@ -44,21 +44,21 @@ class AndroidDataView(
         addUpdateListener(this@AndroidDataView)
     }
 
-    override fun onTouchEvent(event: MotionEvent?) = detector.onTouchEvent(event)
+    override fun onTouchEvent(event: MotionEvent) = detector.onTouchEvent(event)
-    override fun onDown(e: MotionEvent?) = true
+    override fun onDown(e: MotionEvent) = true
-    override fun onShowPress(e: MotionEvent?) = Unit
+    override fun onShowPress(e: MotionEvent) = Unit
 
-    override fun onSingleTapUp(e: MotionEvent?): Boolean {
+    override fun onSingleTapUp(e: MotionEvent): Boolean {
         return handleClick(e, true)
     }
 
-    override fun onLongPress(e: MotionEvent?) {
+    override fun onLongPress(e: MotionEvent) {
         handleClick(e)
     }
 
     override fun onScroll(
-        e1: MotionEvent?,
+        e1: MotionEvent,
-        e2: MotionEvent?,
+        e2: MotionEvent,
         dx: Float,
         dy: Float
     ): Boolean {
@@ -79,8 +79,8 @@ class AndroidDataView(
     }
 
     override fun onFling(
-        e1: MotionEvent?,
+        e1: MotionEvent,
-        e2: MotionEvent?,
+        e2: MotionEvent,
         velocityX: Float,
         velocityY: Float
     ): Boolean {
@@ -100,7 +100,7 @@ class AndroidDataView(
         return false
     }
 
-    override fun onAnimationUpdate(animation: ValueAnimator?) {
+    override fun onAnimationUpdate(animation: ValueAnimator) {
         if (!scroller.isFinished) {
             scroller.computeScrollOffset()
             updateDataOffset()
@@ -127,11 +127,11 @@ class AndroidDataView(
         }
     }
 
-    private fun handleClick(e: MotionEvent?, isSingleTap: Boolean = false): Boolean {
+    private fun handleClick(e: MotionEvent, isSingleTap: Boolean = false): Boolean {
         val x: Float
         val y: Float
         try {
-            val pointerId = e!!.getPointerId(0)
+            val pointerId = e.getPointerId(0)
             x = e.getX(pointerId)
             y = e.getY(pointerId)
         } catch (ex: RuntimeException) {

uhabits-android/src/main/java/org/isoron/uhabits/activities/common/views/ScrollableChart.kt

@@ -116,7 +116,7 @@ abstract class ScrollableChart : View, GestureDetector.OnGestureListener, Animat
         return BundleSavedState(superState, bundle)
     }
 
-    override fun onScroll(e1: MotionEvent?, e2: MotionEvent?, dx: Float, dy: Float): Boolean {
+    override fun onScroll(e1: MotionEvent, e2: MotionEvent, dx: Float, dy: Float): Boolean {
         var dx = dx
         if (scrollerBucketSize == 0) return false
         if (abs(dx) > abs(dy)) {

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/ListHabitsActivity.kt

@@ -19,12 +19,17 @@
 
 package org.isoron.uhabits.activities.habits.list
 
+import android.Manifest.permission.POST_NOTIFICATIONS
 import android.content.Intent
+import android.content.pm.PackageManager.PERMISSION_GRANTED
+import android.os.Build
 import android.os.Bundle
 import android.util.Log
 import android.view.Menu
 import android.view.MenuItem
+import androidx.activity.result.contract.ActivityResultContracts.RequestPermission
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.content.ContextCompat.checkSelfPermission
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import org.isoron.uhabits.BaseExceptionHandler
@@ -56,6 +61,16 @@ class ListHabitsActivity : AppCompatActivity(), Preferences.Listener {
     lateinit var midnightTimer: MidnightTimer
     private val scope = CoroutineScope(Dispatchers.Main)
 
+    private var permissionAlreadyRequested = false
+    private val permissionLauncher =
+        registerForActivityResult(RequestPermission()) { isGranted: Boolean ->
+            if (isGranted) {
+                scheduleReminders()
+            } else {
+                Log.i("ListHabitsActivity", "POST_NOTIFICATIONS denied")
+            }
+        }
+
     private lateinit var menu: ListHabitsMenu
 
     override fun onQuestionMarksChanged() {
@@ -101,7 +116,26 @@ class ListHabitsActivity : AppCompatActivity(), Preferences.Listener {
         screen.onAttached()
         rootView.postInvalidate()
         midnightTimer.onResume()
-        appComponent.reminderScheduler.scheduleAll()
+
+        if (appComponent.reminderScheduler.hasHabitsWithReminders()) {
+            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
+                scheduleReminders()
+            } else {
+                if (checkSelfPermission(this, POST_NOTIFICATIONS) == PERMISSION_GRANTED) {
+                    scheduleReminders()
+                } else {
+                    // If we have not requested the permission yet, request it. Otherwide do
+                    // nothing. This check is necessary to avoid an infinite onResume loop in case
+                    // the user denies the permission.
+                    if (!permissionAlreadyRequested) {
+                        Log.i("ListHabitsActivity", "Requestion permission: POST_NOTIFICATIONS")
+                        permissionLauncher.launch(POST_NOTIFICATIONS)
+                        permissionAlreadyRequested = true
+                    }
+                }
+            }
+        }
+
         taskRunner.run {
             try {
                 AutoBackup(this@ListHabitsActivity).run()
@@ -117,6 +151,10 @@ class ListHabitsActivity : AppCompatActivity(), Preferences.Listener {
         super.onResume()
     }
 
+    private fun scheduleReminders() {
+        appComponent.reminderScheduler.scheduleAll()
+    }
+
     override fun onCreateOptionsMenu(m: Menu): Boolean {
         menu.onCreate(menuInflater, m)
         return true

uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/reminders/ReminderScheduler.kt

@@ -115,6 +115,11 @@ class ReminderScheduler @Inject constructor(
         for (habit in reminderHabits) schedule(habit)
     }
 
+    @Synchronized
+    fun hasHabitsWithReminders(): Boolean {
+        return !habitList.getFiltered(HabitMatcher.WITH_ALARM).isEmpty
+    }
+
     @Synchronized
     fun startListening() {
         commandRunner.addListener(this)