仅在一个viewcontroller中的风景和肖像方向

Question

在我的应用中，我正在使用MPMoviePlayerController。我需要在横向和纵向方向上显示电影播放器​​。我只希望movie player像这样显示，其他屏幕只应该是纵向的。我陷入困境，没有解决方案。从设置中我检查了三种模式，如下所示。

我正在使用ios 7和xcode 5.谢谢

Answer 1

在包含MPMoviePlayerController的ViewController中，实现此功能（iOS6及以上版本）：

- (NSUInteger)supportedInterfaceOrientations
{
  return UIInterfaceOrientationMaskAll; //allow rotate landscape, portrait
}

在其他viewControllers中：

- (NSUInteger)supportedInterfaceOrientations
{ 
  return UIInterfaceOrientationMaskPortrait|UIInterfaceOrientationMaskPortraitUpsideDown; // portrait only 
}

要iOS版本低于6，请执行此方法：

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
- (BOOL)shouldAutorotate

请注意：包含以上VC的ViewController应实现上述方法

Answer 2

创建NavigationController的继承类

BaseNavigationController.h

import

@interface BaseNavigationController：UINavigationController

@end

BaseNavigationController.m

pragma mark-方向更改处理

- （BOOL）shouldAutorotateToInterfaceOrientation：（UIInterfaceOrientation）interfaceOrientation
{
   BOOL shouldAutorotateBool = NO;

if ([self isRotate])
   {
    if([[self.viewControllers lastObject] respondsToSelector:@selector(shouldAutorotate)])
        shouldAutorotateBool =  [[self.viewControllers lastObject] shouldAutorotate];
}
return shouldAutorotateBool;

}

// iOS6 / 7支持 - （NSUInteger）supportedInterfaceOrientations {

NSUInteger interfaceOrientation = UIInterfaceOrientationMaskPortrait;

if ([self isRotate]) {
    if([[self.viewControllers lastObject] respondsToSelector:@selector(preferredInterfaceOrientationForPresentation)]) {
        interfaceOrientation = [[self.viewControllers lastObject]  preferredInterfaceOrientationForPresentation];
    }
}
return interfaceOrientation;

}

- （UIInterfaceOrientation）preferredInterfaceOrientationForPresentation {

UIInterfaceOrientation interfaceOrientation = UIInterfaceOrientationPortrait;

if ([self isRotate]) {
    if([[self.viewControllers lastObject] respondsToSelector:@selector(preferredInterfaceOrientationForPresentation)]) {
        interfaceOrientation = [[self.viewControllers lastObject]  preferredInterfaceOrientationForPresentation];
    }
}
return interfaceOrientation;

}

- （BOOL）shouldAutorotate {

BOOL shouldAutorotateBool = NO;
if ([self isRotate])

{         if（[[self.viewControllers lastObject] respondsToSelector：@ selector（shouldAutorotate）]）             shouldAutorotateBool = [[self.viewControllers lastObject] shouldAutorotate];     }

return shouldAutorotateBool;

}

- （BOOL）isRotate {     if（[[self.viewControllers lastObject] isMemberOfClass：NSClassFromString（@“VideoVC”）]）{

    return YES;

}
return NO;

}

**特定的viewController使用以下代码进行方向**

pragma mark-设备方向处理方法

- （BOOL）shouldAutorotateToInterfaceOrientation：（UIInterfaceOrientation）interfaceOrientation {

return YES;

}

- （UIInterfaceOrientation）preferredInterfaceOrientationForPresentation {

return UIInterfaceOrientationLandscapeLeft;

}

- （NSUInteger）supportedInterfaceOrientations {

return UIInterfaceOrientationMaskLandscapeLeft;

}

- （BOOL）shouldAutorotate {

return YES;

}

Answer 3

仅为MoviePlayer更改方向的最佳方法

    - (NSUInteger) application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
    if ([[self.window.rootViewController presentedViewController] isKindOfClass:[MPMoviePlayerViewController class]])
    {
        return UIInterfaceOrientationMaskAllButUpsideDown;
    }
    else
    {
        return UIInterfaceOrientationMaskPortrait;
    }
}

Answer 4

首先，如果要为iOS6制作应用程序，则应该使用UIViewController documentation中提供的iOS6方法。在iOS6中不推荐像shouldAutorotateToInterfaceOrientation这样的方向方法，iOS6的替代方法是shouldAutoRotate。如果您的应用也支持iOS5，则应该只使用旧方法。

第二个如果您在应用程序中使用UINavigationcontroller并且需要具有不同的界面方向，那么navigationController可能会破坏应用程序中的界面方向。可能的解决方案（对我有用）是实现自定义UINavigationController并覆盖该自定义UINavigationController类中的界面方向方法，这将使您的viewControllers根据您设置的方向旋转，因为您的控制器被推送来自UINavigationController。不要忘记在特定的viewController中添加这些方法。

<强> CustomNavigationController.h

@interface CustomNavigationController : UINavigationController
@end

<强> CustomNavigationController.m

@implementation CustomNavigationController

//overriding shouldRotate method for working in navController
-(BOOL)shouldAutorotate
{  
  return   [self.topViewController shouldAutorotate];   
}

-(NSUInteger)supportedInterfaceOrientations
{
   return [self.topViewController supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
   return [self.topViewController preferredInterfaceOrientationForPresentation];
}