ios - IOS视图控制器方向

Question

我有父视图控制器和另一个模态视图控制器。我在父级上下文中展示了模态视图控制器：

readingViewController * reading_view_controller = [[readingViewController alloc] initWithNibName:@"readingViewController" bundle:nil];
[self setModalPresentationStyle:UIModalPresentationCurrentContext];
[self presentModalViewController:reading_view_controller animated:YES];

父视图控制器不会定向横向；所以，我在父视图控制器中添加了这些方法：

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


-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation{
    return (toInterfaceOrientation == UIInterfaceOrientationPortrait || toInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown);
}

呈现的 viewController（模态呈现）应该面向所有可能的方向；所以，我添加了这些方法：

- (NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskAll;
}

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation{

    return YES;
}

但是，因为我假设（UIModalPresentationCurrentContext），呈现的 viewController 在 IOS 6.0 中没有定向，而它在 IOS 5.0 中按预期工作

请问如何解决这个问题？

Answer 1

如果您有一个基于选项卡的应用程序，则首先在应用程序委托中添加一些代码，然后self.window.rootviewcontroller-self.tabbarcontroller.

        @implementation UITabBarController (SK8FASTR2App)
        -(BOOL)shouldAutorotate
        {
            return YES;
        }

        - (NSUInteger)supportedInterfaceOrientations
        {
            // your custom logic for rotation of selected tab
             if (self.selectedIndex==3){
             return UIInterfaceOrientationMaskPortrait;
             }
             else {
            UIInterfaceOrientationMaskPortrait|UIInterfaceOrientationMaskPortraitUpsideDown|UIInterfaceOrientationLandscapeLeft|UIInterfaceOrientationLandscapeRight;
             return UIInterfaceOrientationMaskAll;
             }

        }

        @end



        before

        @implementation AppDelegate


    - (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
            return  UIInterfaceOrientationMaskAll;
    }

更改该课程的方向

-(BOOL)shouldAutorotate
{
    return NO;
}

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskLandscapeRight;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationLandscapeRight;
}

Answer 2

你应该实施

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation;

例如：-

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationMaskAll;
}