Question

我面临内存泄漏和其他MoviePlayer新启动的问题，因为我的MoviePlayer没有响应功能，我在完成按钮时释放该播放器。

(void) playMovieAtURL
{

    MPMoviePlayerViewController *mpViewController = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:videoURL]];
    mpViewController.view.backgroundColor = [UIColor blackColor];
    [self presentMoviePlayerViewControllerAnimated:mpViewController];

    [mpViewController.view setCenter:self.view.center];

    [[NSNotificationCenter defaultCenter] addObserver:self 
                                             selector:@selector(myMovieFinishedCallback:) 
                                                 name:MPMoviePlayerPlaybackDidFinishNotification 
                                               object:mpViewController]; 

} 


    // When the movie is done,release the controller. (Doesn't come in it.)
-(void)myMovieFinishedCallback:(NSNotification*)aNotification 
{
    MPMoviePlayerController* theMovie=[aNotification object]; 
    [[NSNotificationCenter defaultCenter] removeObserver:self 
                                                    name:MPMoviePlayerPlaybackDidFinishNotification 
                                                  object:theMovie]; 

    // Release the movie instance created in playMovieAtURL
    [theMovie release]; 
}

Answer 1

不确定是你的情况，但这就是文档中关于MPMoviePlayerPlaybackDidFinishNotification的说法：

在案件中不发送此通知电影播放器正在显示的位置在全屏模式下，用户点按完成按钮。在那种情况下，完成按钮可以播放电影播放器转出时暂停全屏模式。如果你想您可以在代码中检测到这种情况应监控其他通知如 MPMoviePlayerDidExitFullscreenNotification。

似乎MPMoviePlayerPlaybackDidFinishNotification仅在电影自动停止时调用。如果您使用的是“完成”按钮，则应使用MPMoviePlayerDidExitFullscreenNotification。

Answer 2

我试图通过传递nil来解决它，现在它正在回复我回调，但电影仍然没有发布，我也会尝试你的建议。无论如何我的新代码

-(void) playMovieAtURL
{

MPMoviePlayerViewController *mpViewController = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:videoURL]];
mpViewController.view.backgroundColor = [UIColor blackColor];
[self presentMoviePlayerViewControllerAnimated:mpViewController];

[mpViewController.view setCenter:self.view.center];

[[NSNotificationCenter defaultCenter] addObserver:self 
     selector:@selector(myMovieFinishedCallback:) 
     name:MPMoviePlayerPlaybackDidFinishNotification 
 object:nil]; 

} 

// When the movie is done,release the controller. 
-(void)myMovieFinishedCallback:(NSNotification*)aNotification 
{
    MPMoviePlayerController* theMovie=[aNotification object]; 
    [[NSNotificationCenter defaultCenter] removeObserver:self 
        name:MPMoviePlayerPlaybackDidFinishNotification 
        object:nil]; 

    // Release the movie instance created in playMovieAtURL
    [theMovie release]; 
}

我的MoviePlayer没有响应功能

2 个答案: