diff --git a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
index 1ee5191db..0648aaa62 100644
--- a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
+++ b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
@@ -186,11 +186,6 @@ public class FileBackend {
         return paint;
     }
 
-    private static String getTakePhotoPath() {
-        return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)
-                + "/Camera/";
-    }
-
     public static Uri getUriForUri(Context context, Uri uri) {
         if ("file".equals(uri.getScheme())) {
             return getUriForFile(context, new File(uri.getPath()));
@@ -474,19 +469,6 @@ public class FileBackend {
         return bitmap;
     }
 
-    private void createNoMedia(File diretory) {
-        final File noMedia = new File(diretory, ".nomedia");
-        if (!noMedia.exists()) {
-            try {
-                if (!noMedia.createNewFile()) {
-                    Log.d(Config.LOGTAG, "created nomedia file " + noMedia.getAbsolutePath());
-                }
-            } catch (Exception e) {
-                Log.d(Config.LOGTAG, "could not create nomedia file");
-            }
-        }
-    }
-
     public void updateMediaScanner(File file) {
         updateMediaScanner(file, null);
     }
@@ -724,28 +706,18 @@ public class FileBackend {
         copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
     }
 
-    private String getExtensionFromUri(Uri uri) {
-        String[] projection = {MediaStore.MediaColumns.DATA};
+    private String getExtensionFromUri(final Uri uri) {
+        final String[] projection = {MediaStore.MediaColumns.DATA};
         String filename = null;
-        Cursor cursor;
-        try {
-            cursor =
-                    mXmppConnectionService
-                            .getContentResolver()
-                            .query(uri, projection, null, null, null);
-        } catch (IllegalArgumentException e) {
-            cursor = null;
-        }
-        if (cursor != null) {
-            try {
-                if (cursor.moveToFirst()) {
-                    filename = cursor.getString(0);
-                }
-            } catch (Exception e) {
-                filename = null;
-            } finally {
-                cursor.close();
+        try (final Cursor cursor =
+                mXmppConnectionService
+                        .getContentResolver()
+                        .query(uri, projection, null, null, null)) {
+            if (cursor != null && cursor.moveToFirst()) {
+                filename = cursor.getString(0);
             }
+        } catch (final SecurityException | IllegalArgumentException e) {
+            filename = null;
         }
         if (filename == null) {
             final List<String> segments = uri.getPathSegments();
@@ -753,7 +725,7 @@ public class FileBackend {
                 filename = segments.get(segments.size() - 1);
             }
         }
-        int pos = filename == null ? -1 : filename.lastIndexOf('.');
+        final int pos = filename == null ? -1 : filename.lastIndexOf('.');
         return pos > 0 ? filename.substring(pos + 1) : null;
     }