在全屏幕上强制横向方向MPMoviePlayerController在退出全屏时阻止正确旋转

Question

我有一个支持所有界面方向的iPhone应用程序(iOS6 +).但是,当MPMoviePlayerController正在播放全屏视频时,应仅支持横向.

我在Stack Overflow上找到了以下解决方案,它可以工作.

    [[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,一个恼人的问题仍然存在,即如果视频以纵向方向退出全屏(在强制风景中播放之后),则底层视图不会向后旋转.我必须手动将设备旋转到横向并返回到纵向以触发更新方向.有没有什么方法可以以编程方式触发这种更新？

以下一组截图应说明我的意思:

注意:由于各种原因,无法使用MPMoviePlayerViewController.

Answer 1

大家好我有同样的问题我解决了 -

这是我的完整代码....

您需要先在appdelegate中进行更改:

-(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代码行:

- (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, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height);
               });
}

此代码在iOS6和iOS7中测试正常.谢谢 :)

如果有任何问题,请告诉我.....

Answer 2

您需要子类化并提供格局作为支持的界面方向.

@interface MyMovieViewController : MPMoviePlayerViewController
@end

@implementation MyMovieViewController

- (BOOL)shouldAutorotate 
{
    return YES;
}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations 
{
    return UIInterfaceOrientationMaskLandscape;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
    return UIInterfaceOrientationIsLandscape(toInterfaceOrientation);
}

@end