how to control sound in android? [duplicate]

This question already has answers here: Closed 10 years ago.

Possible Duplicate:

Volume Control in android application

i m making an app for music player and i want to increase and decrease volume by using hardware buttons on mobile开发者_运维百科. so pls tell me any code to do this.

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TRY TO Use

 Context.getSystemService(Context.AUDIO_SERVICE) 

to get an instance of this class.

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