iOS 播放视频

来源：互联网发布：c语言偏微分方程求解编辑：程序博客网时间：2024/06/16 02:13

iOS开发过程中可能会遇到播放视频的需求

下面我们就直接使用系统提供的类来实现

首先创建项目起名： TestMediaPlayer

接下来我们在项目默认的ViewController.m下创建Button

    UIButton *playBtn=[[UIButton alloc]initWithFrame:CGRectMake(10, 300, 60, 36)];    [playBtn setTitle:@"播放" forState:UIControlStateNormal];    [playBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    [playBtn addTarget:self action:@selector(playClick:) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:playBtn];

点击button时候打开视屏播放ViewController

//播放器视图控制器@property (nonatomic,strong) MPMoviePlayerViewController *moviePlayerViewController;

#pragma mark - UI事件- (void)playClick:(UIButton *)sender {    self.moviePlayerViewController=nil;//保证每次点击都重新创建视频播放控制器视图，避免再次点击时由于不播放的问题    //    [self presentViewController:self.moviePlayerViewController animated:YES completion:nil];    //注意，在MPMoviePlayerViewController.h中对UIViewController扩展两个用于模态展示和关闭MPMoviePlayerViewController的方法，增加了一种下拉展示动画效果    [self presentMoviePlayerViewControllerAnimated:self.moviePlayerViewController];}

初始化播放控件

-(MPMoviePlayerViewController *)moviePlayerViewController{    if (!_moviePlayerViewController) {        NSURL *url=[self getNetworkUrl];        _moviePlayerViewController=[[MPMoviePlayerViewController alloc]initWithContentURL:url];        [self addNotification];    }    return _moviePlayerViewController;}

视屏获取路劲

/** *  取得本地文件路径 * *  @return 文件路径 */-(NSURL *)getFileUrl{    NSString *urlStr=[[NSBundle mainBundle] pathForResource:@"The New Look of OS X Yosemite.mp4" ofType:nil];    NSURL *url=[NSURL fileURLWithPath:urlStr];    return url;}/** *  取得网络文件路径 * *  @return 文件路径 */-(NSURL *)getNetworkUrl{    NSString *urlStr=@"http://7xltgj.com1.z0.glb.clouddn.com/test.mp4";    urlStr=[urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];    NSURL *url=[NSURL URLWithString:urlStr];    return url;}

#pragma mark - 控制器通知/** *  添加通知监控媒体播放控制器状态 */-(void)addNotification{    NSNotificationCenter *notificationCenter=[NSNotificationCenter defaultCenter];    [notificationCenter addObserver:self selector:@selector(mediaPlayerPlaybackStateChange:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:self.moviePlayerViewController.moviePlayer];    [notificationCenter addObserver:self selector:@selector(mediaPlayerPlaybackFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:self.moviePlayerViewController.moviePlayer];    }/** *  播放状态改变，注意播放完成时的状态是暂停 * *  @param notification 通知对象 */-(void)mediaPlayerPlaybackStateChange:(NSNotification *)notification{    switch (self.moviePlayerViewController.moviePlayer.playbackState) {        case MPMoviePlaybackStatePlaying:            NSLog(@"正在播放...");            break;        case MPMoviePlaybackStatePaused:            NSLog(@"暂停播放.");            break;        case MPMoviePlaybackStateStopped:            NSLog(@"停止播放.");            break;        default:            NSLog(@"播放状态:%li",self.moviePlayerViewController.moviePlayer.playbackState);            break;    }}/** *  播放完成 * *  @param notification 通知对象 */-(void)mediaPlayerPlaybackFinished:(NSNotification *)notification{    NSLog(@"播放完成.%li",self.moviePlayerViewController.moviePlayer.playbackState);}

代码完成之后运行项目试试播放

项目代码我们会上传群空间【512301MediaPlayer.zip】

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