Use FileProvider instead of File URIs

app/src/main/AndroidManifest.xml

@@ -223,5 +223,15 @@
             </intent-filter>
         </receiver>
 
+        <provider
+            android:name="android.support.v4.content.FileProvider"
+            android:authorities="org.isoron.uhabits"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
+
     </application>
 </manifest>

app/src/main/java/org/isoron/uhabits/activities/BaseScreen.java

@@ -40,6 +40,7 @@ import java.io.*;
 
 import static android.os.Build.VERSION.*;
 import static android.os.Build.VERSION_CODES.*;
+import static android.support.v4.content.FileProvider.*;
 
 /**
  * Base class for all screens in the application.
@@ -50,6 +51,8 @@ import static android.os.Build.VERSION_CODES.*;
  */
 public class BaseScreen
 {
+    public static final int REQUEST_CREATE_DOCUMENT = 1;
+
     protected BaseActivity activity;
 
     @Nullable
@@ -230,11 +233,14 @@ public class BaseScreen
 
     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,
-            Uri.fromFile(new File(archiveFilename)));
+        intent.putExtra(Intent.EXTRA_STREAM, fileUri);
+        intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
         activity.startActivity(intent);
     }
 

app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ 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/>.
+  -->
+
+<paths>
+    <files-path name="files" path="." />
+    <cache-path name="cache" path="." />
+    <external-path name="external" path="." />
+    <extendal-cache-path name="external-cache" path="." />
+    <external-files-path name="external-files" path="." />
+</paths>