url - iOS 如何通过 URL 播放视频

Question

我想通过 URL 播放视频。我看到了一些示例，代码如下:

NSString *movieFile= [[NSBundle mainBundle] pathForResource:@"android" ofType:@"mp4"];
videoURL=[[NSURL alloc] initFileURLWithPath:movieFile];
moviePlayer=[[MPMoviePlayerController alloc] initWithContentURL:videoURL];

它只播放本地资源。我写了一些代码:

NSString* strurl =@"https://s3.amazonaws.com/adplayer/colgate.mp4";
videoURL=[NSURL fileURLWithPath:strurl];
moviePlayer=[[MPMoviePlayerController alloc] initWithContentURL:videoURL];

但是什么都没有...为什么...以及如何通过 url 播放视频？

Answer 1

在下面的代码中，我通过 Internet 播放位于 Web 服务器上的电影文件中的视频。不要忘记添加 MediaPlayer 框架并在 ViewController.h 文件中包含“MediaPlayer/MediaPlayer.h”。

点击按钮使用以下代码:

    -(IBAction) playVideo:(id)sender
     {

            NSURL *url=[[NSURL alloc] initWithString:@"http://www.ebookfrenzy.com/ios_book/movie/movie.mov"];

            MPMoviePlayerController *moviePlayer=[[MPMoviePlayerController alloc] initWithContentURL:url];

            [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer];

            moviePlayer.controlStyle=MPMovieControlStyleDefault;
            moviePlayer.shouldAutoplay=YES;
            [self.view addSubview:moviePlayer.view];
            [moviePlayer setFullscreen:YES animated:YES];
     }

通知方式:

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

               MPMoviePlayerController *player = [notification object];

               [[NSNotificationCenter defaultCenter] removeObserver:self 
name:MPMoviePlayerPlaybackDidFinishNotification object:player];

               if ([player respondsToSelector:@selector(setFullscreen:animated:)])
               {
                        [player.view removeFromSuperview];
               }
      }