视频 iOS 11/xcode 9 [英] video iOS 11/ xcode 9

问题描述

我使用此代码启动视频(非全屏).人们可以按'全屏'按钮切换到全屏.但是，在 iOS 11 测试版中，视频在全屏模式下变黑，我无法将其反转或再次播放.

I use this code to start a video (not full screen). People can press the 'full screen' button to switch to full screen. However in iOS 11 beta the video turns black in full screen and I can't reverse it or get it playing again.

是否有简单的修复方法可以更新我的 iOS 11 代码?或者有谁知道在哪里可以找到这个样本.我搜索了，但还没有找到任何东西.非常感谢，梅格

Is there an easy fix to update my code for iOS 11? Or does anyone know where to find a sample for this. I searched, but didn't find anything yet. Thanks a lot, Meg

-(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];

}

推荐答案

@Oliver Hu奥利弗，从苹果那里得到了一个非常友好的回答.它不是错误，而是代码中缺少的一行.前面提到的调用 Allen 也应该添加到 viewdidload 中！这是苹果的回答:

@Oliver Hu Hi Oliver, got a very kind answer from Apple. Its not a bug, but a missing line in the code. Also the call Allen mentioned earlier should be added to the viewdidload! Here is Apple's answer:

如果您需要在视图控制器被解除但未释放时拆卸，您应该将调用包装在 -[UIViewController isBeingDismissed] 中，如下所示:

if you need to teardown when the view controller is dismissed but not deallocated, you should wrap the calls in -[UIViewController isBeingDismissed], like so:

-(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];
   }    
}

你也应该在嵌入时调用 [controller didMoveToParentViewController:self] .

Also you should call [controller didMoveToParentViewController:self] when embedding it.

这篇关于视频 iOS 11/xcode 9的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！