[Interest] QMediaPlayer on iOS output audio to loudspeaker

[root]

I am sorry that I am not an iPhone user. Today I found that iPhone has a silent switch, and some machines I tested were slided to silent mode, so that I can't hear audio from the loud speakers.
This question is closed.

On Mon, May 16, 2016 at 05:31:58AM -0700, xuxiang at cchar.com wrote:
> I used Qt 5.6 (commercial edition) QMediaPlayer to play a simple local mp3 file on iPhone5 and iPhone 6, both running ios 8.4.
> On iphone 5 , audio output to the loudspeacker. But on iPhone 6 , audio output to the jack and I need to use a headset to listen audio output.
> 
> Then I use an iPhone 6s Plus, it also output to the jack.
> 
> And then I use an iPad Air running iOS 7 . The audio  output to loudspeaker.
> 
> My question is: how to ensure that when headset not plugged in , the audio will always go to the loudspeaker?
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