iOS How to control the Volume?

[nacho4d]

Hi everyone .
I am writting an app and just realized that in first generation of iPod touch there is no control for Volume in the left side.
So I have to implement the volume adjuster.

Can you give me some ideas about what should I do?

Since, I am very very new to coreAudio and I am hopping this can be accomplished without coreAudio.

But if no, then coreAudio is what I have to study!

Thanks in advance.

 

[developer.in]

Hi everyone .
I am writting an app and just realized that in first generation of iPod touch there is no control for Volume in the left side.
So I have to implement the volume adjuster.

Can you give me some ideas about what should I do?

Since, I am very very new to coreAudio and I am hopping this can be accomplished without coreAudio.

But if no, then coreAudio is what I have to study!

Thanks in advance.

Try the method AudioQueueSetParameter(audioQueue, kAudioQueueParam_Volume, gain);
gain is a float value giving the difference in the volume from current volume

 

[nacho4d]

Try the method AudioQueueSetParameter(audioQueue, kAudioQueueParam_Volume, gain);
gain is a float value giving the difference in the volume from current volume

Thank you very much developer.in

 

[Pring]

Also look into MPVolumeView. The 'gain' only lets you control your volume relative to the iPhone/iPod system volume whereas MPVolumeView lets you control the system volume.

Or rather, it gives the user the option to change it. You cannot programatically alter the system volume, only allow the user to do it with MPVolumeView.

 

[msavarese]

AudioQueueSetParameter is what you are looking for if you are doing the audio queues which most everyone is. the problem with the gain though it is not a global variable so you have to set every sound you have to the gain level. I am using a value between 0.0 and 1.0.