Is there a broadcast action for volume changes?

by

There is no broadcast action, but I did find you can hook up a content observer to get notified when the settings change, volume of streams being some of those settings. Register for the android.provider.Settings.System.CONTENT_URI to be notified of all settings changes:

mSettingsContentObserver = new SettingsContentObserver( new Handler() ); 
this.getApplicationContext().getContentResolver().registerContentObserver( 
    android.provider.Settings.System.CONTENT_URI, true, 
    mSettingsContentObserver );

The content observer might look something like this:

public class SettingsContentObserver extends ContentObserver {

   public SettingsContentObserver(Handler handler) {
      super(handler);
   } 

   @Override
   public boolean deliverSelfNotifications() {
      return super.deliverSelfNotifications(); 
   }

   @Override
   public void onChange(boolean selfChange) {
      super.onChange(selfChange);
      Log.v(LOG_TAG, "Settings change detected");
      updateStuff();
   }
}

And be sure to unregister the content observer at some point.

More Related Contents:

  1. Broadcast receiver not working in ICS if the app is not started atleast once
  2. Where is the all Android broadcast Intent list
  3. Android BroadCastReceiver for volume key up and down
  4. Open another application from your own (intent)
  5. Sending data back to the Main Activity in Android
  6. Check if application is installed – Android
  7. Android ACTION_IMAGE_CAPTURE Intent
  8. Pass data from Activity to Service using an Intent
  9. How to handle the click event in Listview in android?
  10. How to open a PDF via Intent from SD card
  11. LinkedList put into Intent extra gets recast to ArrayList when retrieving in next activity
  12. ACTION_SENDTO for sending an email
  13. Android intent for playing video?
  14. getIntent() Extras always NULL
  15. Broadcast Receiver Register in Manifest vs. Activity
  16. Get Image from the Gallery and Show in ImageView
  17. How to tell which app was selected by Intent.createChooser?
  18. Transfer data from one Activity to Another Activity Using Intents
  19. Moving from one activity to another Activity in Android
  20. Android: Starting An Activity For A Different Third Party App
  21. Android: MediaPlayer setVolume function
  22. How to open private files saved to the internal storage using Intent.ACTION_VIEW?
  23. java.lang.SecurityException: Permission Denial: not allowed to send broadcast android.intent.action.MEDIA_MOUNTED on KitKat only
  24. Sending html email in android using , etc. – is there really no relatively built-in Intent way?
  25. Android – Adding at least one Activity with an ACTION-VIEW intent-filter after Updating SDK version 23
  26. How to launch Android Calendar application using Intent (Froyo)
  27. Android 6: cannot share files anymore?
  28. Alarm Manager does not work in background on Android 6.0
  29. android unlock screen intent?
  30. android – How to get view from context?

Leave a Comment