Question

I use the line below to get thumbnail:

bitmap = MediaStore.Images.Thumbnails.getThumbnail(act.getApplicationContext().getContentResolver(), fid, MediaStore.Images.Thumbnails.MICRO_KIND, null);

And I try to rename file name with below code:

File rename = new File(oldname);
String newpath = newname;
rename.renameTo(new File(newname));

And use below code to update database:

IntentFilter intentfilter = new IntentFilter(Intent.ACTION_MEDIA_SCANNER_STARTED);
intentfilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
intentfilter.addDataScheme("file");
MediaScannerReceiver scanSdReceiver = new MediaScannerReceiver();
registerReceiver(scanSdReceiver, intentfilter);
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory().getAbsolutePath()))); 

public class MediaScannerReceiver extends BroadcastReceiver {  
@Override  
public void onReceive(Context context, Intent intent) {  
String action = intent.getAction();
if(action.equals("android.intent.action.MEDIA_SCANNER_FINISHED")) { 
bitmap = MediaStore.Images.Thumbnails.getThumbnail(act.getApplicationContext().getContentResolver(), fid, MediaStore.Images.Thumbnails.MICRO_KIND, null);
}
} 
}  

The file name change success, the file id also get the new one.
But the thumbnail showed was wrong one.
How to get the right one thumbnail?

Answer 1

It may cause by thumbnail does not be delete.
And the file which after rename one has the same id.
So show the old one’s thumbnail.
You may try to clean /sdcard/DCIM/.thumbnails folder, and create new one.