The supported way to do with this scenario is by requesting audio focus:

http://developer.android.com/reference/android/media/AudioManager.html#requestAudioFocus(android.media.AudioManager.OnAudioFocusChangeListener,
int, int)

On Fri, Mar 23, 2012 at 12:09 PM, dharmveer <[email protected]> wrote:

> I am tryingto build an app that will alert the user in case of an
> emergency by playing an audio file. To override situations where the
> user may be playing loud music and the emergency announcement may not
> be heard by the user (due to sharing of audio h/w with multiple apps),
> can I get exclusive access to audio output so only my audio stream is
> audible and rest all are stopped/killed/muted? I have tried a lot of
> googling and studied the sdk documentation but did not find anything
> that can solve my problem. Thanks for your time.
>
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-- 
Dianne Hackborn
Android framework engineer
[email protected]

Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails.  All such
questions should be posted on public forums, where I and others can see and
answer them.

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