iOS 后台 播放h5 视频、音频 解决方案

1.  AVAudioSession *audioSession = [AVAudioSessionsharedInstance];
    BOOL ok;
    NSError *setCategoryError =nil;
    ok = [audioSession setCategory:AVAudioSessionCategoryPlayback
                             error:&setCategoryError];
    if (!ok) {
        NSLog(@"%s setCategoryError=%@",__PRETTY_FUNCTION__, setCategoryError);

    }

2. info.plst ->  App plays audio or streams audio/video using AirPlay

3. webView 暴露 播放器播放的方法 player.play()

4.

   添加一个退到后台UIApplicationDidEnterBackgroundNotification通知->在接收通知的方法里面实现下面的代码：

   NSTimer *timer = [NSTimertimerWithTimeInterval:1.0ftarget:selfselector:@selector(videoPlay)userInfo:nilrepeats:NO];

   [[NSRunLoopcurrentRunLoop]addTimer:timerforMode:NSDefaultRunLoopMode];

  - (void)videoPlay
  {

   [webstringByEvaluatingJavaScriptFromString:@"player.play();"];

  }

5. 注意销毁 timer对象