如何在iPhone SDK 4.0中播放视频？

Question

我在iphone通过使用此代码的电影播放器​​打开1秒钟，然后自动关闭，没有播放文件播放的视频通过使用此代码

-(IBAction)btnNew_clicked:(id)sender { 

NSURL *url = [NSURL URLWithString:@"http://www.businessfactors.de/bfcms/images/stories/videos/defaultscreenvideos.mp4"]; 
MPMoviePlayerViewController *mp = [[MPMoviePlayerViewController alloc] initWithContentURL:url]; 
[[mp moviePlayer] prepareToPlay]; 
[[mp moviePlayer] setShouldAutoplay:YES]; 
[[mp moviePlayer] setControlStyle:2]; 
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(videoPlayBackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; 
[self presentMoviePlayerViewControllerAnimated:mp];} 

-(void)videoPlayBackDidFinish:(NSNotification*)notification {  
[self dismissMoviePlayerViewControllerAnimated]; } 

。

我检查了视频文件是正确的，但它不是在iphone SDK 4.0中播放。

在此先感谢。

Answer 1

请参阅本question-

Playing a video file from server in an Iphone app

trry了下面的代码，不要忘记添加MediaPlayer.framework，必须导入<的MediaPlayer/MediaPlayer.h >

- (void)viewDidLoad { 
    [super viewDidLoad]; 

    NSURL *url = [NSURL URLWithString:@"http://www.businessfactors.de/bfcms/images/stories/videos/defaultscreenvideos.mp4"]; 
    MPMoviePlayerController *player =[[MPMoviePlayerController alloc] initWithContentURL: url]; 
    [[player view] setFrame: [self.view bounds]]; // frame must match parent view 
    [self.view addSubview: [player view]]; 
    [player play]; 

}