Paul Paul - 5 months ago 58
Android Question

Android file delete leaves empty placeholder in Gallery

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

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>
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