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https://issues.apache.org/jira/browse/CB-905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13296056#comment-13296056
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Shazron Abdullah commented on CB-905:
-------------------------------------

Ok, the approach above is not good enough -- the "hardware volume" button 
controls the ringer/device volume. The volume you are seeing above is correct, 
it is the same volume as the iPod music player - which is separate from the 
ringer/device volume.

To set/get the ringer volume, you would have to use MPVolumeView 
http://developer.apple.com/library/ios/#documentation/mediaplayer/reference/MPVolumeView_Class/Reference/Reference.html
 ... but this class is opaque and visual only. There are a lot of hacks just to 
get the ringer/device volume, which I don't think we want to go into: 
http://blog.stormyprods.com/2009/06/adjusting-iphone-master-volume.html

So, right now, this doesn't look possible.


                
> Hardware volume buttons don't effect Media API playback
> -------------------------------------------------------
>
>                 Key: CB-905
>                 URL: https://issues.apache.org/jira/browse/CB-905
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: iOS
>    Affects Versions: 1.8.0
>         Environment: iPad 2/iOS 5.1.1
> iPhone 4/iOS 5.1.1
>            Reporter: Nathan Demick
>            Assignee: Shazron Abdullah
>             Fix For: 1.9.0
>
>
> When using the Media API, the hardware volume buttons don't change the 
> playback volume unless the button is pressed at these same time the sound is 
> played.
> Expected behavior: hardware volume buttons change Media API playback volume 
> regardless of whether media is currently being played.

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