made provider authorities relativ to deal with different package ids

src/main/AndroidManifest.xml

@@ -197,7 +197,7 @@
 
         <provider
             android:name="android.support.v4.content.FileProvider"
-            android:authorities="eu.siacs.conversations.files"
+            android:authorities="${applicationId}.files"
             android:exported="false"
             android:grantUriPermissions="true">
             <meta-data
@@ -205,7 +205,7 @@
                 android:resource="@xml/file_paths" />
         </provider>
         <provider
-            android:authorities="eu.siacs.conversations.barcodes"
+            android:authorities="${applicationId}.barcodes"
             android:name=".services.BarcodeProvider"
             android:exported="false"
             android:grantUriPermissions="true"/>

src/main/java/eu/siacs/conversations/persistance/FileBackend.java

@@ -60,7 +60,7 @@ import eu.siacs.conversations.xmpp.pep.Avatar;
 public class FileBackend {
 	private static final SimpleDateFormat IMAGE_DATE_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
 
-	public static final String CONVERSATIONS_FILE_PROVIDER = "eu.siacs.conversations.files";
+	private static final String FILE_PROVIDER = ".files";
 
 	private XmppConnectionService mXmppConnectionService;
 
@@ -454,12 +454,17 @@ public class FileBackend {
 		File file = new File(getTakePhotoPath()+"IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
 		file.getParentFile().mkdirs();
 		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-			return FileProvider.getUriForFile(mXmppConnectionService, CONVERSATIONS_FILE_PROVIDER, file);
+			return getUriForFile(mXmppConnectionService,file);
 		} else {
 			return Uri.fromFile(file);
 		}
 	}
 
+	public static Uri getUriForFile(Context context, File file) {
+		String packageId = context.getPackageName();
+		return FileProvider.getUriForFile(context, packageId + FILE_PROVIDER, file);
+	}
+
 	public static Uri getIndexableTakePhotoUri(Uri original) {
 		if ("file".equals(original.getScheme())) {
 			return original;

src/main/java/eu/siacs/conversations/services/BarcodeProvider.java

@@ -34,7 +34,7 @@ import eu.siacs.conversations.xmpp.jid.Jid;
 
 public class BarcodeProvider extends ContentProvider implements ServiceConnection {
 
-    private static final String AUTHORITY = "eu.siacs.conversations.barcodes";
+    private static final String AUTHORITY = ".barcodes";
 
     private final Object lock = new Object();
 
@@ -176,8 +176,9 @@ public class BarcodeProvider extends ContentProvider implements ServiceConnectio
         }
     }
 
-    public static Uri getUriForAccount(Account account) {
-        return Uri.parse("content://" + AUTHORITY + "/" + account.getJid().toBareJid() + ".png");
+    public static Uri getUriForAccount(Context context, Account account) {
+        final String packageId = context.getPackageName();
+        return Uri.parse("content://" + packageId + AUTHORITY + "/" + account.getJid().toBareJid() + ".png");
     }
 
     public static Bitmap createAztecBitmap(String input, int size) {

src/main/java/eu/siacs/conversations/ui/EditAccountActivity.java

@@ -763,7 +763,7 @@ public class EditAccountActivity extends OmemoActivity implements OnAccountUpdat
 
 	private void shareBarcode() {
 		Intent intent = new Intent(Intent.ACTION_SEND);
-		intent.putExtra(Intent.EXTRA_STREAM,BarcodeProvider.getUriForAccount(mAccount));
+		intent.putExtra(Intent.EXTRA_STREAM,BarcodeProvider.getUriForAccount(this,mAccount));
 		intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 		intent.setType("image/png");
 		startActivity(Intent.createChooser(intent, getText(R.string.share_with)));

src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java

@@ -711,7 +711,7 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
 		Uri uri;
 		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 			try {
-				uri = FileProvider.getUriForFile(activity, FileBackend.CONVERSATIONS_FILE_PROVIDER, file);
+				uri = FileBackend.getUriForFile(activity, file);
 			} catch (IllegalArgumentException e) {
 				Toast.makeText(activity,activity.getString(R.string.no_permission_to_access_x,file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
 				return;