更改设备音量 [英] Changing Device Volume

问题描述

我正在开发一个Iphone/Ipod应用程序，其中正在使用AVAudioPlayer.我正在通过滑块更改音频的音量，该滑块可以正常工作，但是现在我必须通过按设备的加号和减号按钮来更改(增加/减少)滑块，而不是自己更改滑块.当我按下设备的加/减按钮时，不知道控件在哪里?有人知道吗，随时为您提供帮助.

I am developing an Iphone/Ipod Application, in which I am using AVAudioPlayer. I am changing volume of audio through slider, which works correctly, but now I have to change(increase/decrease) slider by pressing the device plus and minus button instead of changing slider by myself. When I press plus/minus button of device, don't know where the control goes? Does anybody know, feel free to help.

推荐答案

大满贯，谢谢大家！我已经搜索过了.这对MPMusicPlayer有效，但对AVAudioPlayer无效.你可以做到的.

Slam and thanks all! I have searched on it. This is valid for MPMusicPlayer, but not for AVAudioPlayer. You can do it.

MPMusicPlayerController *_musicController = [MPMusicPlayerController iPodMusicPlayer];

但对于AVAudioPlayer来说不是这样，

But not this for AVAudioPlayer,

AVAudioPlayer *_audioController = [AVAudioPlayer iPodMusicPlayer];

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