支持多接口但在主屏幕中具有单一界面，在iOS8 + iPhone中不起作用 [英] Supporting Multiple Interface but have single interface in home screen not working in iOS8 + iPhone

问题描述

我有如下的视图结构。

I have view structure like below.

HomeView(Support only portrait mode)
 |
 |
 V
View1(Support all orientation)
 |
 |
 V
View2(Support all orientation)

问题：

当我从View2（横向模式）返回 HomeView 时调用 popToRootViewController 方法，它没有调用 supportedInterfaceOrientationsForWindow App_Delegate的方法并在横向模式中显示
HomeView 。

Problem :
When i am coming back from View2(Landscape mode) to HomeView by calling popToRootViewController method,It did not call supportedInterfaceOrientationsForWindow method of App_Delegate and display HomeView in landscape mode.

图片：

Image:

注意：

当我从View1（横向模式）回到HomeView时，同样的事情不会发生通过调用popToRootViewController方法
，它将调用supportedInterfaceOrientationsForWindow并且一切正常。

如果我在iOS7中使用XCode6运行应用程序，那么一切都很好。

Note :
Same thing not happens when i came back from View1(Landscape mode) to HomeView by calling popToRootViewController method it will call supportedInterfaceOrientationsForWindow and all works great.
If I run app using XCode6 in iOS7 all works great.

我在下面阅读了一些问题，但它没有帮助我。< br>
如何保持呈现在解雇模态视图控制器时查看控制器的方向？

在上面的链接 matt 表示 iOS8停止支持带有方向性的 ，但我没有在苹果文档中找到它
如果您有任何关于此更改的参考链接，请分享。

In above link matt said that iOS8 stop support for friezing orientation, but I did not find it in apple document if you have any reference link about this change please share.

问题：

1]为什么委托方法supportedInterfaceOrientationsForWindow没有调用。

2]是否可以让一个视图支持单向，而所有其他视图都支持所有方向。



谢谢

Question :
1] Why delegate method supportedInterfaceOrientationsForWindow is not calling.
2] Is it possible to have one view with support single orientation and all other will support all orientation.

Thanks

推荐答案

我解决了这个问题并将答案发布为它可以帮助一个人

问题：

我在supportedInterfaceOrientationsForWindow中有以下代码。

Problem :
I have below code in supportedInterfaceOrientationsForWindow.

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
    // Suport only portrait mode for home screen
    if([self.navigationController.topViewController isKindOfClass:[ViewHome class]])

    {
        return UIInterfaceOrientationMaskPortrait;
    }
    return UIInterfaceOrientationMaskAll;
}

但是委托方法 supportedInterfaceOrientationsForWindow 当使用 popToRootViewControllerAnimated 方法时，如果有多出两个视图，则不会调用
Cotnrollers 存在于堆栈中。


解决方案：

步骤1：创建导航控制器的子类。

But delegate method supportedInterfaceOrientationsForWindow not called when use popToRootViewControllerAnimated method when there ismore then two view Cotnrollersexists in stack.

Solution :
Step1: Create sub class of Navigation controller.

Step2：覆盖方法popToRootViewControllerAnimated并编写如下代码
//覆盖超类方法popToRootViewControllerAnimated。

Step2: Override method popToRootViewControllerAnimated and write code as below // Overwrite super class method popToRootViewControllerAnimated.

-(NSArray*)popToRootViewControllerAnimated:(BOOL)animated
{
    // Only for iOS8 and above
    if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_7_1)
    {
        // Array which will contaimn all poped view controllers object.
        NSMutableArray *popedControllersArray = [[NSMutableArray alloc] init];

        // Tmp created controllers object
        NSArray *controllers;

        // Hold first view cotnrollers.
        UIViewController *firstViewController = [self.viewControllers objectAtIndex:1];

        // Pop to first view controllers with no animation.
        controllers = [super popToViewController:firstViewController animated:NO];

        // Add poped view cotnrollers objects to the array.
        [popedControllersArray addObjectsFromArray:controllers];

        // Pop to root view controller with animation
        [super popViewControllerAnimated:YES];

        // Add first view controller object as it is poped by above line.
        [popedControllersArray addObject:firstViewController];

        // return poped view controllers object.
        return popedControllersArray;
    }
    else
    {
        // Called super view popToRootViewControllerAnimated method and return popped
        // view controllers array.
        return [super popToRootViewControllerAnimated:animated];
    }
}

如有任何意见，请随意填写并提出任何问题。

Please fill free for any comments and ask for any questions.

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