How can a music app detect the volume keys when screen off in Android?

Question

I play a song in background, and the screen is off now. I press the volume key, the volume of the music stream changes. How can it happen? I have searched for a long time for a solution about how to detect the volume keys press event when screen off, but I don't know how to solve the problem so far.

score 1 · Accepted Answer · edited May 23 '17 at 12:22

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you need a BroadcastReceiver that listens to the according broadcasts. see a similar question here.

edited May 23 '17 at 12:22

Community

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answered May 26 '12 at 10:13

Dennis Winter

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score 0 · Answer 2 · answered May 16 '13 at 09:37

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If you wish to control the volume of audio played through your app, make use of setVolumeControlStream() method. It directs volume key presses to the audio stream you specify.

setVolumeControlStream(AudioManager.STREAM_MUSIC);

answered May 16 '13 at 09:37

Tony

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How can a music app detect the volume keys when screen off in Android?

2 Answers2