//监控APP是否进入后台
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(clickAppInToBackground) name:UIApplicationDidEnterBackgroundNotification object:nil];
#pragma mark - APP进图后台 视频播放暂停
-(void)clickAppInToBackground
{
NSLog(@"APP进图后台 视频播放暂停");
[self.playerShowView pause];
}
