ios – 强制在全屏MPMoviePlayerController上的横向方向防止在退出全屏时正确旋转

我有一个支持所有界面方向的iPhone应用程序(iOS6).但是,当MPMoviePlayerController播放视频全屏时,应仅支持横向.

我在Stack Overflow上找到了以下解决方案,它的工作原理.

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerWillEnterFullscreenNotification:) name:MPMoviePlayerWillEnterFullscreenNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerWillExitFullscreenNotification:) name:MPMoviePlayerWillExitFullscreenNotification object:nil];

…

-(NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
    if (self.landscapeOnlyOrientation) {
        return UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
    }
    return UIInterfaceOrientationMaskAll;
}

- (void)moviePlayerWillEnterFullscreenNotification:(NSNotification*)notification {
    self.landscapeOnlyOrientation = YES;
}

- (void)moviePlayerWillExitFullscreenNotification:(NSNotification*)notification {
    self.landscapeOnlyOrientation = NO;
}

然而,一个令人讨厌的问题仍然存在,即如果视频以纵向方向退出全屏幕(在强制风景中播放之后),底层视图不会回转.我必须手动将设备旋转到横向并返回到纵向以触发方向的更新.有没有办法我可以以编程方式触发这种更新？

以下屏幕截图应该说明我的意思：

注意：由于各种原因,使用MPMoviePlayerViewController是不可能的.

解决方法

嗨所有我有同样的问题我解决了 –

这是我的完整代码….

你需要先改变appdelegate：

-(NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
if ([[[NowPlaying sharedManager] playerViewController] allowRotation])//Place your condition here
{
    return UIInterfaceOrientationMaskAll;
}
return UIInterfaceOrientationMaskPortrait;
}

注册全屏控制通知：

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerWillEnterFullscreenNotification:)
                                             name:MPMoviePlayerWillEnterFullscreenNotification
                                           object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerWillExitFullscreenNotification:)
                                             name:MPMoviePlayerWillExitFullscreenNotification
                                           object:nil];

然后在播放器控制器中添加一行代码：

- (void)moviePlayerWillEnterFullscreenNotification:(NSNotification *)notification
{
dispatch_async(dispatch_get_main_queue(),^
               {
                   self.allowRotation = YES;
               });
}



- (void)moviePlayerWillExitFullscreenNotification:(NSNotification *)notification
{
self.allowRotation = NO;
[self.moviePlayerController setControlStyle:MPMovieControlStyleNone];

dispatch_async(dispatch_get_main_queue(),^
               {

                   //Managing GUI in pause condition
                       if (self.currentContent.contentType == TypeVideo && self.moviePlayerController.playbackState == MPMoviePlaybackStatePaused)
                   {
                       [self.moviePlayerController pause];
                       if (self.playButton.selected)
                           self.playButton.selected = NO;
                   }
                   self.view.transform = CGAffineTransformMakeRotation(0);
                   [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait];
                   self.view.bounds = CGRectMake(0,[UIScreen mainScreen].bounds.size.width,[UIScreen mainScreen].bounds.size.height);
               });
}

这个代码在iOS6和iOS7中测试工作正常.谢谢 ：)

请让我知道如果有任何问题…..