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thURL:url];
// 初始化player对象
self.player = [[AVPlayer alloc] initWithPlayerItem:item];
// 设置播放页面
AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:_player];
// 设置播放页面的大小
layer.frame = CGRectMake(0, 100, [UIScreen mainScreen].bounds.size.width, 300);
// 设置背景颜色
layer.backgroundColor = [UIColor cyanColor].CGColor;
// 设置播放窗口和当前视图之间的比例显示内容
layer.videoGravity = AVLayerVideoGravityResizeAspect;
// 添加播放视图到view上
[self.view.layer addSublayer:layer];
// 设置播放进度的默认值
self.progressSlider.value = 0;
// 设置播放音量的默认值
self.player.volume = 1.0f;
[self addNotification];
}
#pragma mark - 开始播放按钮的响应方法
- (IBAction)startPlayer:(UIButton *)sender
{
[self.player play];
}
#pragma mark - 暂停播放按钮的响应方法
- (IBAction)puasePlayer:(UIButton *)sender
{
[self.player pause];
}
#pragma mark - 改变进度按钮的响应方法
- (IBAction)changeProgress:(UISlider *)sender
{
self.sumPlayOperation = _player.currentItem.duration.value / _player.currentItem.duration.timescale;
// CMTimeMake(a, b) a表示当前时间，b表示每秒钟有多少帧
[_player seekToTime:CMTimeMakeWithSeconds(sender.value * self.sumPlayOperation, _player.currentTime.timescale) completionHandler:^(BOOL finished) {
[self.player play];
}];
}
- (void)addNotification{
//给AVPlayerItem添加播放完成通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playbackFinished:)name:AVPlayerItemDidPlayToEndTimeNotification object:self.player.currentItem];
}
- (void)playbackFinished:(NSNotification *)notification{
NSLog(@"视频播放完成.");
}
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