Iphone 如何将视频添加到应用程序

我正在尝试制作一个播放视频的应用程序，但我遇到了一些问题。我听到声音，但看不到视频。我诚恳地四处寻找解决方案，但所有的提示似乎都不起作用。代码如下：

VideoTestViewController.m

---

VideoTestViewController.h

#import <UIKit/UIKit.h>
#import <MediaPlayer/MediaPlayer.h>

@interface VideoTestViewController : UIViewController {

}

@end

#import <UIKit/UIKit.h> #import <MediaPlayer/MediaPlayer.h> @interface VideoTestViewController : UIViewController { MPMoviePlayerController* m_player; } - (void) play; @end

#导入
#进口
@接口VideoTestViewController:UIViewController{
}
@结束

有点猜测-但这就是我要做的：

VideoTestViewController.h

#import <UIKit/UIKit.h>
#import <MediaPlayer/MediaPlayer.h>

@interface VideoTestViewController : UIViewController {

}

@end

#import <UIKit/UIKit.h> #import <MediaPlayer/MediaPlayer.h> @interface VideoTestViewController : UIViewController { MPMoviePlayerController* m_player; } - (void) play; @end #进口 #进口 @接口VideoTestViewController:UIViewController { MPMoviePlayerController*m_播放器； } -（无效）游戏； @结束 VideoTestViewController.m

@implementation VideoTestViewController - (void) viewDidAppear:(BOOL)animated { [self play]; } - (void) play { NSURL* url = [[NSBundle mainBundle] URLForResource:@"spitfiregrill_iPhone" withExtension:@"m4v"]; m_player = [[MPMoviePlayerController alloc] initWithContentURL:url]; [m_player.backgroundView setBackgroundColor:[UIColor blackColor]]; [m_player.view setBackgroundColor:[UIColor blackColor]]; [m_player setControlStyle:MPMovieControlStyleNone]; [[m_player view] setFrame:[self.view bounds]]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; [m_player play]; [self.view addSubview:[m_player view]]; } - (void) moviePlayBackDidFinish:(NSNotification*)_notification { [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; [m_player.view removeFromSuperview]; [m_player stop]; [m_player release]; m_player = nil; } @end @VideoTestViewController的实现 -（无效）视图显示：（BOOL）动画 { [自我游戏]； } -（无效）玩 { NSURL*url=[[NSBundle mainBundle]URLForResource:@“spitfiregrill_iPhone”及其扩展名：@“m4v”]； m_player=[[MPMoviePlayerController alloc]initWithContentURL:url]； [m_player.backgroundView setBackgroundColor:[UIColor blackColor]]； [m_player.view setBackgroundColor:[UIColor blackColor]]； [m_player setControlStyle:MPMovieControlStyleNone]； [[m_player view]setFrame:[self.view bounds]； [[NSNotificationCenter defaultCenter]添加观察者：自选择器：@selector（moviePlayBackDidFinish:）名称：MPMoviePlayerPlaybackDidFinishNotification对象：nil]； [m_player play]； [self.view addSubview:[m_player view]]； } -（无效）电影回放完成：（NSNotification*）\u通知 { [[NSNotificationCenter defaultCenter]移除观察者：self 名称：MPMoviePlayerPlaybackDidFinishNotification 对象：无]； [m_player.view从SuperView移除]； [m_player stop]； [m_播放器释放]； m_player=零； } @结束 全屏模式下的视频-

- (void)viewDidLoad {
    NSString *url = [[NSBundle mainBundle]
        pathForResource:@"Stock_Footage_Demobroadband"
                 ofType:@"mp4"];

    MPMoviePlayerViewController *playerViewController =
    [[MPMoviePlayerViewController alloc]
        initWithContentURL:[NSURL fileURLWithPath:url]];

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

    [self.view addSubview:playerViewController.view];

    //---play movie---
    MPMoviePlayerController *player = [playerViewController moviePlayer];
    [player play];

    [super viewDidLoad];
}

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

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欢迎来到stackoverflow！如果答案有效，你应该接受。。。帮助访问者了解这个答案是有效的！