ios - 检测耳机是否插入 iOS 设备

Question

iOS 设备上有一部互动电影。当电影开始时(点击)，视频开始的那个人会问你插入耳机，如果插入，那么视频应该自动直接跳到故事(直接转到视频故事)。我应该怎么办？以及如何编写代码？

Answer 1

首先，您必须注册 AudioRoute Changes :-

AudioSessionAddPropertyListener (kAudioSessionProperty_AudioRouteChange,
                                     audioRouteChangeListenerCallback,
                                 self);

在这里您可以描述更改路线的原因:-

CFDictionaryRef routeChangeDictionary = inPropertyValue;

  CFNumberRef routeChangeReasonRef =
  CFDictionaryGetValue (routeChangeDictionary,
                        CFSTR (kAudioSession_AudioRouteChangeKey_Reason));

  SInt32 routeChangeReason;

      CFNumberGetValue (routeChangeReasonRef, kCFNumberSInt32Type, &routeChangeReason);

  if (routeChangeReason == kAudioSessionRouteChangeReason_OldDeviceUnavailable) 
  {
       // your statements for headset unplugged

  }
  if (routeChangeReason == kAudioSessionRouteChangeReason_NewDeviceAvailable)
  {
       // your statements for headset plugged                             
  }