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

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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：

enter image description here

enter image description here

enter image description here

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

ios iphone objective-c mpmovieplayercontroller uiinterfaceorientation

8 回答

  • 2

    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.....

    回复于
  • 0

    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
    回复于
  • -1

    您可以尝试“强制”方向刷新，让系统为您处理正确的方向：

    - (void)forceOrientationRefresh
{
    // Force orientation refresh
    [self presentModalViewController:[UIViewController new]
                            animated:NO];
    [self dismissModalViewControllerAnimated:NO];
}

    这是hack-ish但它的确有效 .

    回复于
  • 0

    这可能听起来很疯狂，但是，您可以尝试在打开视频视图控制器之前在本地保存最后一个方向，然后使用 application:supportedInterfaceOrientationsForWindow: 返回保存的方向并强制视图控制器保持在其上而不是旋转 .

    回复于
  • 11

    您可以像这样以编程方式更改您的方向

    -(void)viewDidAppear:(BOOL)animated
{

     if(UIDeviceOrientationIsPortrait(self.interfaceOrientation)){
        if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)])
        {
            objc_msgSend([UIDevice currentDevice], @selector(setOrientation:), UIInterfaceOrientationLandscapeLeft );

        }
    }

}

    别忘了添加 #import <objc/message.h>

    回复于
  • 5

    我认为您可以注册viewcontroller以获取设备方向并强制调用viewcontroller的方向方法 .

    回复于
  • 0

    您使用supportedIterfaceOrientationsForWindow然后查找：MPInlineVideoFullscreenViewController . 找到正确的视图控制器有点棘手，但它确实有效 .

    以下是示例代码：

    - (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
    if ([NSStringFromClass([self.window.rootViewController.presentedViewController.presentedViewController class]) isEqualToString:@"MPInlineVideoFullscreenViewController"]){
    return UIInterfaceOrientationMaskAllButUpsideDown;
}
    return UIInterfaceOrientationMaskLandscape;
}
    回复于
  • 0

    你需要为iOS7添加这个代码，它完美而简单

    -(NSUInteger)supportedInterfaceOrientations {

    return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationPortrait;
}

.... creating a player
MPMoviePlayerViewController *mp =[[MPMoviePlayerViewController alloc] initWithContentURL:url];
...make settings and present it
[self presentMoviePlayerViewControllerAnimated:mp];
    回复于

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