QTMovie not playing in new window

Question

我有一個MAC OSX應用程序，我想在主窗口中按下一個按鈕並打開一個播放電影的新窗口。這是我的IBAction代碼;

- (IBAction) playButtonClicked: (id) sender 
{ 
    MoviePlayerController *moviePlayerWindow = [[MoviePlayerController alloc] initWithWindowNibName:@"MoviePlayer"]; 
    [moviePlayerWindow showWindow:self]; 

    NSError *error; 
    NSString *moviePath = [[NSBundle mainBundle] pathForResource:@"sample_iTunes" ofType:@"mov"]; 
    QTMovie *movie = [QTMovie movieWithFile:moviePath error:&error]; 
    if (error) { 
     NSLog(@"%@", [error localizedDescription]); 
    } else { 
     [movie gotoBeginning]; 
     [moviePlayerWindow.movieViewer setMovie:movie]; 
     [moviePlayerWindow.movieViewer play:nil]; 
    } 

} 

movieViewer是一個QTMovieViewer outlet在新窗口中。

窗口打開但沒有播放電影;有人可以理解我做錯了什麼嗎？如果需要，我可以發送完整的項目（這是一個非常小的測試項目）。

Answer 1

嘗試改變NSError *error;到NSError *error = nil;