后台播放音乐，来电话，挂断电话就崩溃了

[jandyway]

崩溃停在了DOUAudioEventLoop.m文件的- (BOOL)_handleEvent:(event_type)event withStreamer:(DOUAudioStreamer **)streamer方法中的:
NSAssert(status == noErr, @"failed to activate audio session");
这个断言失败，status 不等于noErr， 打印出来了failed to activate audio session

[johnlui]

原因很简单：http://stackoverflow.com/a/6999245/4404288

解决办法如下：

将以下代码放到 if (status == noErr) { 之外：

[_renderer setInterrupted:NO];

        if (*streamer != nil &&
            [*streamer status] == DOUAudioStreamerPaused &&
            [*streamer isPausedByInterruption]) {
          [*streamer setPausedByInterruption:NO];
          [self performSelector:@selector(play) onThread:[NSThread mainThread] withObject:nil waitUntilDone:NO];
        }

然后将如下代码全部注释掉：

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated"
      OSStatus status;
      status = AudioSessionSetActive(TRUE);
      NSAssert(status == noErr, @"failed to activate audio session");
#pragma clang diagnostic pop
      if (status == noErr) {

      }