import "ViewController.h"

import <AVFoundation/AVFoundation.h>

@interface ViewController ()

@property(nonatomic, strong)AVPlayer *videoPlayer;

@end

@implementation ViewController

• (void)viewDidLoad {
  [super viewDidLoad];
  self.view.backgroundColor = [UIColor whiteColor];

  // 创建button 点击按钮播放
  UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
  button.frame = CGRectMake(100, 100, 100, 100);
  button.backgroundColor = [UIColor blackColor];
  [self.view addSubview:button];
  [button addTarget:self action:@selector(btnButton:) forControlEvents:UIControlEventTouchUpInside];

}

-(void)btnButton:(UIButton *)button{

NSURL *url = [NSURL 


AVPlayerItem *item = [[AVPlayerItem alloc]initWithURL:url];
// 初始化videoPlayer
self.videoPlayer = [[AVPlayer alloc]initWithPlayerItem:item];
// 把视频层放到layer上
AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:self.videoPlayer];

layer.frame = self.view.frame;

// 居中
layer.videoGravity = AVLayerVideoGravityResizeAspect;


// 添加到播放视频上
[self.view.layer addSublayer:layer];


// 全屏播放
layer.bounds = CGRectMake(0, 0, self.view.frame.size.height, CGRectGetWidth(self.view.frame));

// 播放效果
layer.transform = CATransform3DMakeRotation(M_PI_2, 0, 0, 1);

// 开始播放
[self.videoPlayer play];

}