adjust volume of speech (on android version)

[zoff99]

for java app on android it works like this:

Call this API in your onCreate():

setVolumeControlStream(AudioManager.STREAM_MUSIC);

This tells the AudioManager that when your application has focus, the volume keys should adjust music volume.

not sure if this function is available in C aswell?

but android is using ALSA, so it should also be possible to find the right volume and use alsa lib

[sanderd17]

All hardware keys are overwritten, so this doesn't work.

There should be a method made which asks the volume, adds or substracts a certain value from this and sets it back. If that gives an OSD notification, that's a plus point.

the volume getter is the method

getStreamVolume(int stream)

from the class ​http://developer.android.com/reference/android/media/AudioManager.htm The setter has the same syntax, and you can also ask the max volume. I suppose the min is 0.

I think the integer for the stream is the STREAM_MUSIC constant (3), but I'm not sure either.

[zoff99]

actually now not all keys are overwritten anymore. this works now.