视频播放
方法一
- 最新的框架
- 需要导入两个框架才能使用 <AVFoundation/AVFoundation.h>，
<AVKit/AVKit.h>
- 需要导入两个框架才能使用 <AVFoundation/AVFoundation.h>，
- 使用方法：
// 创建一个属性
- @property(nonatomic,strong) AVPlayerViewController *playerViewController;
//播放器的对象
- @property(nonatomic,strong) AVPlayer *player;
//媒体资源管理对象,
- @property(nonatomic,strong) AVPlayerItem *playerItem;
-
两种播放样式 ：
-
样式一：再重开一个控制器，来实现全屏播放
// 1，初始化视图控制器的对象
self.playVC = [[AVPlayerViewController alloc] init];
// 2、设置播放器的对象
AVPlayer *player = [[AVPlayer alloc] initWithURL:[NSURL URLWithString:@""]];
self.playVC.player = player;
// 4、设置样式
self.playVC.videoGravity = AVLayerVideoGravityResizeAspect;
// 5. 播放
[self.playVC.player play];
[self presentViewController:self.playVC animated:YES completion:^{
NSLog(@"开始播放");
}];- 样式二 ：在自身控制器上的view内直接播放//懒加载两个对象
-(AVPlayer *) player{
if (_player) {
return _player;
}//1.创建player对象
_player=[[AVPlayer alloc] initWithPlayerItem:self.playerItem];
//2.监听当前播放的时间
__weak ViewController *vc=self;
[_player addPeriodicTimeObserverForInterval:CMTimeMake(1, 1) queue:nil usingBlock:^(CMTime time){
float seconds=CMTimeGetSeconds(time); NSLog(@"当前播放的时间%f",seconds); dispatch_async(dispatch_get_main_queue(), ^{ [vc.proSlider setValue:seconds animated:YES]; });}];
return _player;
-
}
-(AVPlayerItem *) playerItem{
if(_playerItem){
return _playerItem;
}
//1.url对象
NSURL *url=[NSURL URLWithString:@"http://static.tripbe.com/videofiles/20121214/9533522808.f4v.mp4"];
//2.生成AVPlayerItem对象
_playerItem=[[AVPlayerItem alloc] initWithURL:url];
//3.注册监听
[self addObserverForPlayer];
return _playerItem;
}
//kvo的方式注册监听
-(void) addObserverForPlayer{
//监听播放的状态
[self.playerItem addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew context:nil];
//监听当前视频缓冲的进度
[self.playerItem addObserver:self forKeyPath:@"loadedTimeRanges" options:NSKeyValueObservingOptionNew context:nil];
//添加通知中心以监听当播放结束的时候 调用的方法
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playFinished:) name:AVPlayerItemDidPlayToEndTimeNotification object:nil];
}
-(void) observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString *,id> *)change context:(void *)context{
AVPlayerItem *item=(AVPlayerItem *)object;
if ([keyPath isEqualToString:@"status"]) {
if(item.status==AVPlayerStatusReadyToPlay){
//初始化slider值
CMTime time=item.duration;
CGFloat seconds=time.value/time.timescale;
self.proSlider.maximumValue=seconds;
}else if(item.status==AVPlayerStatusFailed){
NSLog(@"播放视频失败");
}
}else if([keyPath isEqualToString:@"loadedTimeRanges"]){
//处理当前缓存的进度
NSArray *timeArr=change[@"new"];
//获取当前缓存的进度
CMTimeRange range=[timeArr.firstObject CMTimeRangeValue];
float start=CMTimeGetSeconds(range.start);
float end=CMTimeGetSeconds(range.duration);
NSLog(@"%f %f",start,end);
//计算缓存的比例
float totalBuffer=start+end;
float value=totalBuffer/CMTimeGetSeconds(item.duration);
self.progressView.progress=value;
}
}
-(void) playFinished:(NSNotification *) notification{
NSLog(@"播放结束");
_progressView.progress=0;
_proSlider.value=0;
}
//移除监听
-(void)dealloc{
[self.playerItem removeObserver:self forKeyPath:@"status"];
[self.playerItem removeObserver:self forKeyPath:@"loadedTimeRanges"];
}
-(IBAction)PlayerBtn:(id)sender{
UIButton *btn=(UIButton *)sender;
if (!_isPlaying) {
//播放
BOOL isOpen=false;
for (CALayer *layer in _playView.layer.sublayers) {
//判断图层是否是播放器的图层
if ([layer isKindOfClass:[AVPlayerLayer class]]) {
isOpen=YES;
}
}
if (!isOpen) {
//不存在此图层
[self addSubLayer];
}
[btn setTitle:@"暂停" forState:UIControlStateNormal];
[self.player play];
}else{
//暂停
[btn setTitle:@"播放" forState:UIControlStateNormal];
[self.player pause];
}
_isPlaying=!_isPlaying;
}
//添加播放视图的图层
-(void) addSubLayer{
//1.初始化PalyerLayer的对象
AVPlayerLayer *playerlayer=[AVPlayerLayer playerLayerWithPlayer:self.player];
//1.1设置frame
playerlayer.frame=_playView.layer.bounds;
//1.2 内容填充的模式
playerlayer.videoGravity=AVLayerVideoGravityResize;
//2.添加到图层上
[_playView.layer addSublayer:playerlayer];
}
-(IBAction)sliderValue:(UISlider *)sender{
[self.playerItem seekToTime:CMTimeMake(sender.value, 1) completionHandler:^(BOOL finished){
NSLog(@"滑动结束");
//播放
[self.player play];
_isPlaying=YES;
}];
}
##方法二
- 此方法不推荐使用，将要废弃
- 苹果自带的框架： <MediaPlayer/MediaPlayer.h>
```
// 只创建控制器
- @property (nonatomic,strong) MPMoviePlayerController *mpController;
// 创建的是视图控制器
- @property (nonatomic,strong) MPMoviePlayerViewController *movieVC;
```
例子：
```
// 1.创建url
NSURL *url = [NSURL URLWithString:@"http://static.tripbe.com/videofiles/20121214/9533522808.f4v.mp4"];
// 2.初始化
_mpController = [[MPMoviePlayerController alloc] initWithContentURL:url];
// 3.设置播放器样式
_mpController.controlStyle = MPMovieControlStyleEmbedded; // 4 设置frame
_mpController.view.frame = CGRectMake(0,160,self.view.frame.size.width, 400); // 5.添加到view上
[self.view addSubview:_mpController.view];
// 6.开始播放
[_mpController play];
####或者--另外打开一个控制器全屏播放
// 1.创建url
NSURL *url = [NSURL URLWithString:@"http://static.tripbe.com/videofiles/20121214/9533522808.f4v.mp4"];
// 2.创建控制器
MPMoviePlayerViewController *playerVC = [[MPMoviePlayerViewController alloc] initWithContentURL:url];
// 3.播放- 另外打开一个控制器全屏播放
[self presentViewController:playerVC animated:YES completion:^{
NSLog(@"开始播放");
}];
```