iOS自带播放器的使用

MPMoviePlayerController是通过MediaPlayer.frame引入的，可用于播放在iOS支持的所有格式的视频，用起来很简单，但是有注意的事项，实现结果如下：


代码如下：

-(IBAction)click:(id)sender{

//通过点击按钮出发视频播放视图的加载

[self playMyVedio];

}

-(void)playMyVedio{

//路径的设置，这里要注意，不要用[NSURL urlwithstring],还要去确保路径的正确

NSBundle *bundle = [NSBundle mainBundle];

NSString *moviePath = [bundle pathForResource:@"111/Viva" ofType:@"mp4"];

NSURL *movieURL = [NSURL fileURLWithPath:moviePath];

//很重要的一点是在头文件里已经把player变为属性了，@property（nonamaic,strong），如果不写为属性就会黑屏，目前不知道为什么

player =[[MPMoviePlayerController alloc] initWithContentURL:movieURL];

player.controlStyle=MPMovieControlStyleDefault;

[player prepareToPlay];

[player.view setFrame:self.view.bounds];  // player的尺寸

[self.view addSubview: player.view];

player.shouldAutoplay=YES;

}

如果注意了视频的路径，和设置了属性，那么点击按钮就应该可以顺利的以全屏幕是播放视频，下一个问题就是退出，因为是全屏模式，模仿 iphone自己的视频播放，应该是点击左上角的done按钮就退出播放，这里如果不作处理，点击后只是退出全屏，屏幕还是有一块黑，其实是player 的非全屏模式，所以这里就要监听一个通知，点击done按钮后发出的通知，这样就可以退出了，代码如下：

- (void)viewDidLoad

{

[super viewDidLoad];

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(exitFullScreen:) name: MPMoviePlayerDidExitFullscreenNotification object:nil];

}

-(void)exitFullScreen:(NSNotification *)notification{

[player.view removeFromSuperview];

NSLog(@”remove player”);

}

更新一种方法，程序启动自动播放全屏视频，没有控制条，播放完毕接视图呈现，也就是一个过场动画，这里要注意把设置控制条和全屏等语句写在添加播放器视图之后，要不然设置无效

-(void)playMyVedio{

NSString *myFilePath = [[NSBundle mainBundle] pathForResource:@”mnMovnew.mp4″ ofType:nil inDirectory:nil];

NSURL *movieURL = [NSURL fileURLWithPath:myFilePath];

player =[[MPMoviePlayerController alloc] initWithContentURL:movieURL];

[player prepareToPlay];

[self.view addSubview:player.view];//设置写在添加之后

player.shouldAutoplay=YES;

[player setControlStyle:MPMovieControlStyleNone];

[player setFullscreen:YES];

[player.view setFrame:self.view.bounds];

}

MPMoviePlayerController播放视频扬声器没声音，插上耳机能听到声音，郁闷了好一阵子，最终找到了解决办法：

play 设置会话类型：

[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: nil];


.h文件引入头文件：

#import <AVFoundation/AVAudioSession.h>

打开网络视频：

-(void)openmovie
{
    MPMoviePlayerViewController *movie = [[MPMoviePlayerViewController alloc]initWithContentURL:[NSURLURLWithString:@"视频网络地址"]];


    [movie.moviePlayer prepareToPlay];
    [self presentMoviePlayerViewControllerAnimated:movie];
    [movie.moviePlayer setControlStyle:MPMovieControlStyleFullscreen];

    [movie.viewsetBackgroundColor:[UIColorclearColor]];

    [movie.view setFrame:self.view.bounds];
    [[NSNotificationCenter defaultCenter]addObserver:self

                                             selector:@selector(movieFinishedCallback:)

                                                 name:MPMoviePlayerPlaybackDidFinishNotification

                                               object:movie.moviePlayer];

}
-(void)movieFinishedCallback:(NSNotification*)notify{

    // 视频播放完或者在presentMoviePlayerViewControllerAnimated下的Done按钮被点击响应的通知。


    MPMoviePlayerController* theMovie = [notifyobject];

    [[NSNotificationCenter defaultCenter]removeObserver:self

                                                    name:MPMoviePlayerPlaybackDidFinishNotification

                                                  object:theMovie];

    [self dismissMoviePlayerViewControllerAnimated];

}

打开本地视频：

-(void)openmovie
{

   NSString *url = [[NSBundlemainBundle]pathForResource:@"IMG_0322"ofType:@"mp4"];
    MPMoviePlayerViewController *playerViewController  = [[MPMoviePlayerViewController alloc]initWithContentURL:[NSURL fileURLWithPath:url]];
    [[NSNotificationCenter defaultCenter]addObserver:selfselector:@selector(movieFinishedCallback:)
                                                name:MPMoviePlayerPlaybackDidFinishNotification
                                              object:[playerViewControllermoviePlayer]];

    [self.view addSubview:playerViewController.view];

    MPMoviePlayerController *player = [playerViewController moviePlayer];
    [player play];

}
- (void) movieFinishedCallback:(NSNotification*) aNotification {
   MPMoviePlayerController *player = [aNotification object];
    [[NSNotificationCenter defaultCenter]removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotificationobject:player];
    [player stop];
    [player.view removeFromSuperview];

}