強制整個屏幕上的橫向方向MPMoviePlayerController在退出全屏時阻止了正確的旋轉

Question

我有一個支持所有接口方向的iPhone應用程序（iOS6 +）。但是，當MPMoviePlayerController播放全屏視頻時，只應支持橫向。

我在Stack Overflow上找到了下面的解決方案，它工作。

[[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，一個惱人的問題仍然存在，即如果視頻中退出縱向全屏（強制橫向播放後），基本觀點不旋轉回。我必須手動將設備旋轉到風景並返回到肖像以觸發更新方向。有什麼辦法可以通過編程方式觸發這種更新？

下面的一組截圖應該說明我的意思：

注：由於種種原因，使用MPMoviePlayerViewController是不可能的。

Answer 1

大家好我有我解決了這同樣的問題 -

這裏是我完整的代碼....

您需要首先改變的appdelegate：

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

註冊通知的全屏控制：

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

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

然後在播放器中添加的代碼行：

- (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); 
       }); 
} 

此代碼已在iOS6和iOS7中正常工作。謝謝:)

請讓我知道，如果有任何問題.....

Answer 2

這可能聽起來很瘋狂，但是，您可以嘗試在打開視頻視圖控制器之前在本地保存最後的方向，然後使用application:supportedInterfaceOrientationsForWindow:返回保存的方向並強制視圖控制器停留在其上而不旋轉。

Answer 3

你可以嘗試以「力」的方向刷新讓系統正確的方向你：

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

這是黑客十歲上下，但它的工作原理。

Answer 4

您可以通過編程改變你的方向是這樣

-(void)viewDidAppear:(BOOL)animated 
{ 

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

     } 
    } 

} 

而且，別忘了添加#import <objc/message.h>

Answer 5

您需要繼承，並提供景觀爲支持的接口方向。

@interface MyMovieViewController : MPMoviePlayerViewController 
@end 

@implementation MyMovieViewController 

- (BOOL)shouldAutorotate 
{ 
    return YES; 
} 

- (UIInterfaceOrientationMask)supportedInterfaceOrientations 
{ 
    return UIInterfaceOrientationMaskLandscape; 
} 

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

@end 

Answer 6

我認爲你可以註冊你的viewcontroller設備的方向和強制調用viewcontroller的方向的方法。

Answer 7

你需要添加此代碼爲iOS7 它完美的作品，簡單

-(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]; 

Answer 8

您可以使用supportedIterfaceOrientationsForWindow然後尋找： MPInlineVideoFullscreenViewController。找到正確的視圖控制器是有點棘​​手，但它的工作原理。

下面是示例代碼：

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