Android file delete leaves empty placeholder in Gallery

Question

I insert an image via:

    ContentValues values = new ContentValues();   
    values.put(Images.Media.TITLE, filename);
    values.put(Images.Media.DATE_ADDED, System.currentTimeMillis()); 
    values.put(Images.Media.MIME_TYPE, "image/jpeg");

    Uri uri = this.getContentResolver().insert(Images.Media.EXTERNAL_CONTENT_URI, values);

But when I try to delete

    File f = new File(imageURI);
    f.delete();

The picture is no longer there but an empty placeholder is. Any ideas?

Answer 1

Android has a cache of sorts that keeps track of media files.

Try this:

sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory())));

It makes the MediaScanner service run again, which should remove the deleted image from the device's cache.

Looks like you also need to add this permission to your AndroidManifest.xml:

<intent-filter>
  <action android:name="android.intent.action.MEDIA_MOUNTED" />
  <data android:scheme="file" /> 
</intent-filter>