MPMoviePlayerController播放背景

Question

我想用MPMoviePlayerController在后台播放视频的声音。视频正在运行，但背景音停止。我想继续声音和背景（只有背景声音）。 info.plist中有设置为“音频”

- (void)viewDidAppear:(BOOL)animated { 
    [super viewDidAppear:animated]; 

    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents]; 
    [self becomeFirstResponder]; 
} 

- (void)viewWillDisappear:(BOOL)animated { 
    [super viewWillDisappear:animated]; 


    [[UIApplication sharedApplication] endReceivingRemoteControlEvents]; 
    [self resignFirstResponder]; 
} 




- (void)Play_Video{ 
    [[AVAudioSession sharedInstance] setDelegate: self]; 
    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil]; 
    [[AVAudioSession sharedInstance] setActive: YES error: nil]; 


    self.movieController = [[MPMoviePlayerController alloc] init]; 

    self.movieController.view.frame = self.view.bounds; 
    self.movieController.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin; 
    self.movieController.backgroundView.backgroundColor = [UIColor clearColor]; 
    self.movieController.view.hidden = NO; 
    self.movieController.controlStyle = MPMovieControlStyleEmbedded; 
    [self.view addSubview:self.movieController.view]; 
    self.movieController.useApplicationAudioSession = NO; 

    [UrlBlock VideoURL:url success:^(NSURL *URL) { 

     if (self.movieController) 
      self.movieController.contentURL = URL; 
     else 
      self.movieController = [[MPMoviePlayerController alloc] initWithContentURL:URL]; 

    } failure:^(NSError *error) { 
     [self performSelectorOnMainThread:@selector(Alert:) withObject:error waitUntilDone:NO]; 
    }]; 


} 

Answer 1

这可能是显而易见的背景模式，也许你只是没有粘贴，但你重写- (BOOL) canBecomeFirstResponder方法？

即

- (BOOL) canBecomeFirstResponder { 
    return YES; 
}