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并且它可以正常工作。

    [[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（在强制横向播放之后），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

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

Answer 1

大家好我遇到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中经过测试正常运行。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

Answer 3

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];
}

这是黑客行为，但它确实有效。

Answer 4

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。 / p>

Answer 5

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 );

        }
    }

}

不要忘记添加#import <objc/message.h>

Answer 6

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。

Answer 7

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;
}

Answer 8

您需要为iOS7添加此代码它完美而简单

-(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];

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

8 个答案: