检测耳机按钮点击 iPhone SDK [英] Detect headset button click on iPhone SDK

问题描述

有没有办法检测耳机的播放/暂停按钮点击?

Is there a way to detect the headset's play/pause button click?

我设法检测到音量按钮的点击:

I managed to detect the volume buttons clicks using:

AudioSessionAddPropertyListener( kAudioSessionProperty_CurrentHardwareOutputVolume , audioVolumeChangeListenerCallback, self );

但我找不到中心按钮的 AudioSessionProperty.这样做的方法是什么?

But I can't find an AudioSessionProperty for the center button. What's the way to do that?

推荐答案

从您的应用程序外部完成的所有操作都被视为远程事件".如果您双击 Home 按钮并在此处按播放/暂停，则相当于按耳机上的播放/暂停按钮(双击下一个相同，三击上一个相同).

Everything that's done from outside your app is considered a "Remote Event". If you double-tap the Home button and press Play/Pause there, it's the equivalent of pressing the play/pause button on the headset (Same for double tapping for next, and triple tapping for previous).

这里是 iOS 远程事件的事件处理.

就个人而言，我喜欢继承 MainWindow (UIWindow) 并覆盖 sendEvent: 方法，这样我可以更直接地管理它:

Personally, I like subclassing the MainWindow (UIWindow) and overriding the sendEvent: method, so I can manage it more directly:

- (void)sendEvent:(UIEvent *)event
{
    if (event.type == UIEventTypeRemoteControl)
    {
        // Do stuff here
    }
    else
    {
        // Not my problem.
        [super sendEvent:event];
    }
}

希望对您有所帮助，中央按钮事件的枚举是 UIEventSubtypeRemoteControlTogglePlayPause.

Hope that helps, the enum for the event of the central button is UIEventSubtypeRemoteControlTogglePlayPause.

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