how to set BroadCastReceiver for volume keys to open new activity

Question

If an user presses volume key up and down, is it possible to detect it in my broadcast receiver?

I need the full code. This question have been already asked on http://stackoverflow.com but was not answered properly.

I have been searching for a solution to this question from the past three weeks but unable to find proper answer.

I want code snipet for:

1)     public class MainActivity extends Activity {}
2)     public class VolumeKeyReceiver extends BroadcastReceiver  {}
3)     AndroidManifest.xml

please help!!

Answer 1

There is not a supported broadcast event for volume button press (change). There are 2 ways to listen for volume button presses.

1) ContentObserver. See How to register ContentObserver for media volume change?

2) onKeyEvent. See Android - Volume Buttons used in my application

If you want a BroadcastReceiver, one of the two above can fire a broadcast event - sendBroadcast see http://developer.android.com/reference/android/content/Context.html#sendBroadcast(android.content.Intent)