在 iOS 5 中播放视频

我正在尝试遵循本教程link http://www.techotopia.com/index.php/Video_Playback_from_within_an_iOS_5_iPhone_Application，但我有问题。有人可以看一下并让我知道需要更改什么吗？ 我尝试查找其他示例，但似乎没有一个有效。请让我知道需要更改哪些内容。

以下是错误

i386 架构的未定义符号： “_OBJC_CLASS_$_MPMoviePlayerController”，引用自： VideoScreenViewController.o 中的 objc-class-ref “_MPMoviePlayerPlaybackDidFinishNotification”，引用自： -VideoScreenViewController.o 中的[VideoScreenViewController playVideo:] -VideoScreenViewController.o 中的[VideoScreenViewController moviePlayBackDidFinish:] ld：未找到架构 i386 的符号 clang：错误：链接器命令失败，退出代码为 1（使用 -v 查看调用）

这是代码

//  VideoScreenViewController.h

#import <UIKit/UIKit.h>
#import "MediaPlayer/MediaPlayer.h"
@interface VideoScreenViewController : UIViewController

@property (strong, nonatomic) MPMoviePlayerController *moviePlayer;

- (IBAction)playVideo:(id)sender;

@end

    }


#import "VideoScreenViewController.h"
#import "MediaPlayer/MediaPlayer.h"
@interface VideoScreenViewController ()

@end

@implementation VideoScreenViewController

@synthesize moviePlayer;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    self.view.backgroundColor = [UIColor clearColor];
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (IBAction)playVideo:(id)sender {

        NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] 
                                             pathForResource:@"Movie" ofType:@"MOV"]];
        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];


}


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

    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] 
                                         pathForResource:@"Movie" ofType:@"MOV"]];
    MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL:url];
    [[NSNotificationCenter defaultCenter] 
     removeObserver:self
     name:MPMoviePlayerPlaybackDidFinishNotification
     object:player];

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

@end

将 MediaPlayer.framework 添加到您的项目中..然后尝试..