ios 视频播放器MPMoviePlayerController
这个东西和之前的音频播放差不多, 也是先需要导入系统框架MediaPlayer.framework 才能使用到MPMoviePlayerController 的文件中导入相应的头文件
初始化:这里就有些不一样了MPMoviePlayerController是可以通过远程url初始化的, 例如:
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MPMoviePlayerController *moviePlayer = [ [ MPMoviePlayerController alloc]initWithContentURL:[NSURL urlWithString:@"URL"] ]; |
接下来是控制器样式设置:
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moviePlayer.moviewControlMode = MPMovieControlModeHidden; |
可以使用下列样式：
MPMovieControlModeDefault 显示播放/暂停、音量和时间控制
MPMovieControlModeVolumeOnly 只显示音量控制
MPMovieControlModeHidden 没有控制器
通常情况下, 我们一般都是自己来定义视频播放器, 所以大多数还是选择最后没有控制器的那个.
屏幕宽高比例:
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moviePlayer.scallingMode = MPMovieScallingModeNone; |
MPMovieScallingModeNone 不做任何缩放
MPMovieScallingModeAspectFit 适应屏幕大小，保持宽高比
MPMovieScallingModeAspectFill 适应屏幕大小，保持宽高比，可裁剪
MPMovieScallingModeFill 充满屏幕，不保持宽高比
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[ moviePlayer play ]; // 开始播放[ moviePlayer stop ]; // 停止播放 |
注册一个通知 你的程序可以配置电影播放器在何时候发送通知，包括结束加载内容、技术播放、改变宽高比等。电影播放器会将事件发送到 Cocoa 的通知中心，你可以对其进行配置，指定将这些事件转发到你的应用程序的一个对象。要接收这些通知，需要使用 NSNotificationCenter 类，为电影播放器添加一个观察者(observer):
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NSNotificationCenter* notificationCenter = [NSNotificationCenter defaultCenter]; [ notificationCenter addObserver:self selector:@selector(moviePlayerPreloadFinish:) name:MPMoviePlayerContentPreloadDidFinishNotification object:moviePlayer ];// 通知会发到你指定的委托类和目标方法。通知参数让你可以知道是哪个事件触发了委托方法：-(void)moviePlayerPreloadDidFinish:(NSNotification*)notification{ //添加你的处理代码 } |
你会观察到以下通知：
MPMoviePlayerContentPreloadDidFinishNotification
当电影播放器结束对内容的预加载后发出。因为内容可以在仅加载了一部分的情况下播放，所以这个通知可能在已经播放后才发出。
MPMoviePlayerScallingModeDidChangedNotification
当用户改变了电影的缩放模式后发出。用户可以点触缩放图标，在全屏播放和窗口播放之间切换。
MPMoviePlayerPlaybackDidFinishNotification
当电影播放完毕或者用户按下了Done按钮后发出。
这里有个小实例:自定义视频之用手势来控制视频进度和音量大小
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#import <MediaPlayer/MediaPlayer.h> @interface KKBMoviePlayerController : MPMoviePlayerController<UIGestureRecognizerDelegate> @end |
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#import "KKBMoviePlayerController.h" #import "AppDelegate.h" @interface KKBMoviePlayerController(){ BOOL _inFullScreen; UIPanGestureRecognizer *_pan; CGPoint _lastPoint; BOOL _startChange; BOOL _changeVolume; } @end @implementation KKBMoviePlayerController - (id)initWithContentURL:(NSURL *)url{ self =[super initWithContentURL:url]; if (self) { self.view.backgroundColor = [UIColor clearColor]; self.initialPlaybackTime = -1; self.endPlaybackTime = -1; [self prepareToPlay]; [self play]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(enterFullScreen:) name:MPMoviePlayerWillEnterFullscreenNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(leaveFullScreen:) name:MPMoviePlayerWillExitFullscreenNotification object:nil]; } return self; } #pragma mark - full screen controller - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{ return YES; } - (void)handlePan:(UIPanGestureRecognizer*)rec{ if (_inFullScreen) { if (rec.state == UIGestureRecognizerStateBegan) { _lastPoint = [rec locationInView:self.view]; } else if (rec.state == UIGestureRecognizerStateChanged) { CGPoint nowPoint = [rec locationInView:self.view]; if (_startChange == NO) { if (fabs(nowPoint.y - _lastPoint.y) > fabs(nowPoint.x - _lastPoint.x)) { _changeVolume = NO; } else { _changeVolume = YES; } _startChange = YES; } else { if (_changeVolume) { //change volume float volume = [[MPMusicPlayerController applicationMusicPlayer] volume]; float newVolume = volume; if (nowPoint.x == _lastPoint.x) { } else { if (nowPoint.x < _lastPoint.x) { newVolume += 0.01; } else { newVolume -= 0.01; } } if (newVolume < 0) { newVolume = 0; } else if (newVolume > 1.0) { newVolume = 1.0; } [[MPMusicPlayerController applicationMusicPlayer] setVolume:newVolume]; } else { //change playback state if (self.playbackState != MPMoviePlaybackStateSeekingForward && self.playbackState != MPMoviePlaybackStateSeekingBackward) { if (nowPoint.y == _lastPoint.y) { } else { if (nowPoint.y < _lastPoint.y) { [self beginSeekingForward]; } else { [self beginSeekingBackward]; } } _lastPoint = nowPoint; } } } } else if (rec.state == UIGestureRecognizerStateCancelled || rec.state == UIGestureRecognizerStateEnded || rec.state == UIGestureRecognizerStateFailed){ _startChange = NO; [self endSeeking]; } } } - (void)enterFullScreen:(NSNotification*)notification{ _inFullScreen = YES; _pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)]; _pan.delegate = self; [[[[UIApplication sharedApplication] windows] objectAtIndex:0] addGestureRecognizer:_pan]; } - (void)leaveFullScreen:(NSNotification*)notification{ _inFullScreen = NO; [[[[UIApplication sharedApplication] windows] objectAtIndex:0] removeGestureRecognizer:_pan]; } @end |
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