How to update Android Media Database

Question

My application shows a list of songs on the SD card, and it is possible to delete a song from the SD card.

Even when the song is deleted, the song is still on my list of apps.

How can I update the Android multimedia database and show the updated database?

Answer 1

Android has a cache that tracks media files.

Try the following:

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

This will start the MediaScanner service again, which should remove the deleted song from the device’s cache.

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> 

Answer 2

For Android before ICS, send an ACTION_MEDIA_MOUNTED broadcast:

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

For ICS and Bean Jellies, you can use the MediaScannerConnection API to scan media files

Answer 3

Gallery Updates, including Android Kitkat

 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE); File f = new File("file://"+ Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)); Uri contentUri = Uri.fromFile(f); mediaScanIntent.setData(contentUri); this.sendBroadcast(mediaScanIntent); } else { sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory()))); } 

Answer 4

Below was tested only on emulators. The solution works on 2.2 and 2.3, but not 4. On the 4th Android emulator, this action does nothing with the message in LogCat:

Disclaimer: Broadcast Intent

Unfortunately, we could not find a way to update the media storage for Android 4. Not tested on Android 3.

The error also occurs in version 2.3.3 of Intel. Do not check real devices.