ios - 在全屏模式下强制横向显示 MPMoviePlayerController 会在退出全屏模式时阻止正确的旋转

Question

我有一个支持所有界面方向的 iPhone 应用程序 (iOS6+)。但是，当 MPMoviePlayerController 全屏播放视频时，只应支持横向。

我在 Stack Overflow 上找到了以下解决方案并且它有效。

    [[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;
}

但是，一个烦人的问题仍然存在，即如果视频以纵向退出全屏(在强制横向播放后)，底层 View 不会旋转回来。我必须手动将设备旋转到横向并返回纵向以触发方向更新。有什么方法可以以编程方式触发这种更新吗？

下面的一组截图应该可以说明我的意思:

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

Answer 1

大家好，我遇到了同样的问题，我已经解决了-

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;
}

为全屏控制注册通知:

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

此代码在 iOS6 和 iOS7 中测试工作正常。谢谢:)

如果有任何问题，请告诉我......