iphone - 当应用程序在后台时，如何在中断后恢复 Spotify 播放器播放？

Question

我有一个播放 Spotify 曲目的应用程序。当应用程序移至后台时，它可以完美运行，但当它被“呼叫”或“iOS 弹出窗口”中断时，它会停止播放。我已添加Required background modes到.plistApp plays audio中。如何在应用程序处于后台时中断结束时恢复播放。

Answer 1

我使用了音频中断回调。

AudioSessionInitialize (NULL, NULL, interruptionListenerCallback,self);
AudioSessionSetActive(YES);
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];

并在收到中断后调用播放管理器的播放/暂停方法。

void interruptionListenerCallback (void *inUserData, UInt32 interruptionState)
{
// This callback, being outside the implementation block, needs a reference
//to the AudioPlayer object
CustomPlayerView *controller = (__bridge CustomPlayerView *) inUserData;

if (interruptionState == kAudioSessionBeginInterruption)
{
   [controller.playbackManager setIsPlaying:NO];
}
else if (interruptionState == kAudioSessionEndInterruption)
{
   [controller.playbackManager setIsPlaying:YES];
}
}