iOS 视频播放 AVPlayer 循环播放 闪屏

问题终于解决，选用AVPlayer，重置一下AVPlayerItem就不会出现闪屏现象，注册一个通知同样可以实现循环播放，而且AVPlayer可以自定义播放样式，给了我们更大的发挥空间，完全可以自己DIY播放器样式。并且AVPlayer完全可以实现两个视频窗口播放！

1.需要引入两个类库：

在.h中引入

#import 
.h>

在.m中引入

#import 
.h>

代码如下：

- (void)viewDidLoad
{
    [super viewDidLoad];


    UIButton * rightBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    rightBtn.frame = CGRectMake(50, 420, 180, 50);
    [rightBtn addTarget:self action:@selector(doRight) forControlEvents:UIControlEventTouchUpInside];
    [rightBtn setTitle:@"同时播放" forState:UIControlStateNormal];
    [self.view addSubview:rightBtn];




    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"找朋友" ofType:@"mp4"];
    NSURL *sourceMovieURL = [NSURL fileURLWithPath:filePath];
    AVAsset *movieAsset = [AVURLAsset URLAssetWithURL:sourceMovieURL options:nil];
    AVPlayerItem * playerItem = [AVPlayerItem playerItemWithAsset:movieAsset];
    self.player_0 = [AVPlayer playerWithPlayerItem:playerItem];
    AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:_player_0];
    playerLayer.frame = CGRectMake(0, 0, 400, 500);
    playerLayer.videoGravity = AVLayerVideoGravityResizeAspect;
    [self.view.layer addSublayer:playerLayer];

    [_player_0 play];

    //注册通知
    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(runLoopTheMovie:) name:AVPlayerItemDidPlayToEndTimeNotification object:nil];



}



- (void)doRight
{


    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"字母歌" ofType:@"mp4"];
    NSURL *sourceMovieURL = [NSURL fileURLWithPath:filePath];
    AVAsset *movieAsset = [AVURLAsset URLAssetWithURL:sourceMovieURL options:nil];
    AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:movieAsset];
    self.player_1 = [AVPlayer playerWithPlayerItem:playerItem];
    AVPlayerLayer * playerLayer = [AVPlayerLayer playerLayerWithPlayer:_player_1];
     playerLayer.frame = CGRectMake(420, 0, 400, 500);
    playerLayer.videoGravity = AVLayerVideoGravityResizeAspect;
    [self.view.layer addSublayer:playerLayer];

    [_player_1 play];

}

- (void)runLoopTheMovie:(NSNotification *)n{
    //注册的通知  可以自动把 AVPlayerItem 对象传过来，只要接收一下就OK

    AVPlayerItem * p = [n object];
    //关键代码 
    [p seekToTime:kCMTimeZero];

    [_player_0 play];
    NSLog(@"重播");
}