Question

我有一个由两半组成的UIViewController（它们实际上是在UIContainerViews中）。 1个半部分包含UIWebView，用于显示PDF，另一半包含用于流式传输视频的UIView。

带有UIWebView的导航栏，带有UIButton，按下时会以全屏模式呈现模态UIWebview：

- (IBAction)pressedFullscreenButton:(id)sender
{
  // pause the video view controller
  self.videoViewController.videoPlayer pause];

  // perform the segue - this is modal, full screen
  [self performSegueWithIdentifier:@"FullscreenSegue" sender:self];
}

所以我按全屏按钮，视频暂停，我的pdf / uiwebview以模态全屏显示。当我关闭这个全屏视图控制器以回到我的分屏时，当我按下视频播放时，音频播放，但视频没有，我不能为生活弄清楚为什么 - 任何帮助将非常感激。

为了解决这个问题，这不是我的首选解决方案，我基本上可以获得视频的当前时间，停止它，设置当前时间，播放视频并在视图控制器出现时立即暂停。这是我的代码：

所以我使用了一个MPMoviePlayerController，它已经包含在一个名为StandardVideoPlayer的类中：

@implementation StandardVideoPlayer


-(id)initWithParentView:(UIView *)parent andAutoPlay:(BOOL)autoPlay andFullScreen:(BOOL)fullScreen andAnimated:(BOOL)animated
{
  // Call superclass's initializer
  self = [super init];
  if( !self || !parent)
  {
    return nil;
  }
  else
  {
    if (!_moviePlayerController)
    {
      _moviePlayerController = [[MPMoviePlayerController alloc] init];
    }

    _moviePlayerController.controlStyle = MPMovieControlStyleDefault;
    [_moviePlayerController.view setFrame:parent.frame];
    [_moviePlayerController.view setCenter:parent.center];
    _moviePlayerController.allowsAirPlay = YES;
    _moviePlayerController.shouldAutoplay = autoPlay;
    [_moviePlayerController setFullscreen:fullScreen animated:animated];

    [parent addSubview: [self videoView]];
  }

  return self;
}

-(void)loadFromFile: (NSString*) filePath;
{
  if (_moviePlayerController)
  {
    NSURL *fileUrl = [NSURL fileURLWithPath:filePath];
    [_moviePlayerController setContentURL:fileUrl];
    [_moviePlayerController prepareToPlay];
  }
}

- (void)loadFromURL: (NSString*) urlString
{
  if ( [[ConnectionManager sharedInstance] canConnect] )
  {
    if (_moviePlayerController)
    {
      NSURL *url = [NSURL URLWithString:urlString];
      [_moviePlayerController setContentURL:url];
      [_moviePlayerController prepareToPlay];
    }
  }
  else
  {
    [[ConnectionManager sharedInstance] displayConnectionWarningWithText:@"Ok" andDelegate:nil];

  }

}

-(void)loadFromHTML:(NSString *)html
{
  // NSString *h = [NSString stringWithFormat:html, ]
}

-(void)play
{
  if (_moviePlayerController)
  {
    [_moviePlayerController prepareToPlay];
    [_moviePlayerController play];
  }
}

-(void)stop
{
  if (_moviePlayerController)
  {
    [_moviePlayerController stop];
  }
}

-(void)pause
{
  if (_moviePlayerController)
  {
    [_moviePlayerController pause];
  }
}

// use this to get the view form the moviePlayerController......
-(UIView*)videoView
{
  UIView *view = nil;
  if (_moviePlayerController)
  {
    view = _moviePlayerController.view;
  }

  return view;
}


@end

然后在视图控制器中我有：

@implementation VideoViewController

// lazy initialiser
- (StandardVideoPlayer*) videoPlayer
{
  if (!_videoPlayer)
  {
    _videoPlayer = [[StandardVideoPlayer alloc] initWithParentView:self.view andAutoPlay:NO andFullScreen:NO andAnimated:YES];
  }
  return _videoPlayer;
}

- (void) viewDidLoad
{
  [super viewDidLoad];

  self.initialised = NO;
  self.wasPDFScreen = NO;
  self.isFullScreen = NO;
  [self.spinner stopAnimating];
  self.spinner.hidesWhenStopped = YES;

  [GlobalStore sharedInstance].videoViewController = self;
}

-(void) willEnterFullScreen
{
  self.isFullScreen = YES;
}

-(void)loadStateChanged
{
  MPMovieLoadState state = [self.videoPlayer.moviePlayerController loadState];
  if (state & MPMovieLoadStatePlayable)
  {
    [self.spinner stopAnimating];
  }
}

-(void) customInit
{
  if (!self.initialised)
  {        
    [self.view setBackgroundColor:[UIColor blackColor]];
    [self.videoPlayer.videoView setBackgroundColor:[UIColor blackColor]];

    // set a border
    CGFloat borderWidth = 1.0f;

    self.videoPlayer.videoView.frame = CGRectInset(self.videoPlayer.videoView.frame, -borderWidth, -borderWidth);
    self.videoPlayer.videoView.layer.borderColor = BORDER_COLOUR;
    self.videoPlayer.videoView.layer.borderWidth = borderWidth;

    self.view.frame = CGRectInset(self.view.frame, -borderWidth, -borderWidth);
    self.view.layer.borderColor = BORDER_COLOUR;
    self.view.layer.borderWidth = borderWidth;

    // set this to be able to exit the video player properly
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(willEnterFullScreen)
                                                 name:MPMoviePlayerWillEnterFullscreenNotification
                                               object:_videoPlayer.moviePlayerController];

    // set this to be able to start/stop the spinner
 [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(loadStateChanged)
                                                 name:MPMoviePlayerLoadStateDidChangeNotification
                                               object:_videoPlayer.moviePlayerController];

    // make sure the views are always at the front
    [self.view bringSubviewToFront:self.videoPlayer.videoView];
    [self.view bringSubviewToFront:self.spinner];

    self.initialised = YES;
  }
}

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

  [self customInit];
}

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

  [self.spinner stopAnimating];

  if (_videoPlayer && self.wasPDFScreen)
  {
    NSTimeInterval time = [self.videoPlayer.moviePlayerController currentPlaybackTime];
    if (time != 0)
    {
      // So to ge the video to play properly, i have to uncommment the lines below, but this loses the cache and isn't quite as smooth as i would like.

      //[self stopVideo];
      //self.videoPlayer.moviePlayerController.currentPlaybackTime = time;
      //[self.videoPlayer.moviePlayerController prepareToPlay];
      //[self.videoPlayer.moviePlayerController play];
      //[self.videoPlayer.moviePlayerController pause];
    }
  }

  self.isFullScreen = NO;
  self.wasPDFScreen = NO;
}

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

  // only stop the video when we mean to - not when we go into full screen mode
  if (!self.isFullScreen && !self.wasPDFScreen)
    [self stopVideo];
}

- (void)playVideo
{
  [self.spinner startAnimating];

    [self.videoPlayer loadFromURL:@"someurl"];    

    // and play!!
    [self.videoPlayer play]; 
}

-(void)stopVideo
{
  [self.videoPlayer stop];
}

@end

Answer 1

我最终实现了AV套件视图控制器。完美的工作。

在模态全屏iOS 8之后，视频无法在mpmovieplayercontroller上播放

1 个答案: