ios - 视频 iOS 11/xcode 9

Question

我使用此代码开始播放视频(不是全屏)。人们可以按'全屏' 按钮切换到全屏。然而，在 iOS 11 测试版中，视频在全屏模式下变黑，我无法反转它或让它再次播放。

是否有一个简单的修复程序来更新我的 iOS 11 代码？或者有谁知道在哪里可以找到这个样本。我搜索过，但还没有找到任何东西。 非常感谢，梅格

-(void)viewDidLoad {

       [super viewDidLoad];

    // grab a local URL to our video
    NSURL *videoURL = [[NSBundle mainBundle]URLForResource:@"pres 2" withExtension:@"m4v"];

    // create an AVPlayer
    AVPlayer *player = [AVPlayer playerWithURL:videoURL];

    // create a player view controller
    self.controller = [[AVPlayerViewController alloc]init];
    controller.player = player;
    [player play];


    // show the view controller
    [self addChildViewController:controller];
    [self.view addSubview:controller.view];
    controller.view.frame = CGRectMake(0,25, 750, 422);

}


-(void)playerItemDidReachEnd:(NSNotification *) notification{
    //remove the player

}


-(void) viewWillDisappear:(BOOL)animated{

    [super viewWillDisappear:animated];

    [controller.player replaceCurrentItemWithPlayerItem:nil];
}

-(void) viewDidDisappear:(BOOL)animated{

    [super viewDidDisappear:animated];
    [controller.player replaceCurrentItemWithPlayerItem:nil];

}

Answer 1

@Oliver 胡 嗨，奥利弗，Apple 给了我一个很好的答复。它不是错误，而是代码中缺少的一行。还有前面提到的调用Allen应该加入viewdidload!这是 Apple 的回答:

如果你需要在 view controller 被 dismissed 但没有被释放时拆解，你应该将调用包装在 -[UIViewController isBeingDismissed] 中，像这样:

-(void) viewWillDisappear:(BOOL)animated{

   [super viewWillDisappear:animated];

   if ([self isBeingDismissed])
  {
   [controller.player replaceCurrentItemWithPlayerItem:nil];
   }
}

-(void) viewDidDisappear:(BOOL)animated{

   [super viewDidDisappear:animated];
   if ([self isBeingDismissed])
  {
   [controller.player replaceCurrentItemWithPlayerItem:nil];
   }    
}

此外，您还应该在嵌入时调用 [controller didMoveToParentViewController:self]。