iphone总是返回UIInterfaceOrientationPortrait [英] iphone always returns UIInterfaceOrientationPortrait

问题描述

我需要确保当我的 UIViewController 加载时，它会根据需要旋转。

I need to make sure that when my UIViewController loads, it rotates as needed.

我已经实现了 shouldAutorotateToInterfaceOrientation 方法及其全部工作正常，除非应用程序首次加载时（当iphone处于横向模式时）或从UIViewController进入时是纵向模式 interfaceOrientation 和 [[UIDevice currentDevice]方向] 始终返回纵向模式！

I have implemented the shouldAutorotateToInterfaceOrientation methods and its all working fine, except when the app first loads (when the iphone is in landscape mode) or when going from a UIViewController which was is portrait mode the interfaceOrientation and the [[UIDevice currentDevice] orientation] always returns portrait mode!

我一直在阅读博客甚至是一些SO问题，但它们似乎都没有解决潜在的问题。

I have been reading blogs and even some SO questions, but none of them seem to address the underlying issue.

我正在使用标准的UINavigationController应用程序。所以第一个视图是第一个被推入控制器的堆栈。我也尝试过询问self.navigationController的方向，也没有运气。

I am using a standard UINavigationController application. So the first view is the first pushed controller onto the stack. I have also tried asking the self.navigationController its orientation, with no luck either.

非常感谢任何帮助。

编辑：这是我的viewWillAppear代码

EDIT: Here is my code for the viewWillAppear

- (void) viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[[self navigationController] setNavigationBarHidden:YES animated:NO];

UIInterfaceOrientation orientation = [[UIDevice currentDevice] orientation];

if (orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown)
    [self setPortraitMode];
else
    [self setLandscapeMode];
}

编辑2

以下是我打印当前的方式

Here is how I am printing out the current

UIInterfaceOrientation orientation = [[UIDevice currentDevice] orientation];
NSLog(@"currentDevice: %d", (int)orientation);
NSLog(@"statusbar: %d", (int)[UIApplication sharedApplication].statusBarOrientation);
NSLog(@"nav controller: %d", (int)self.navigationController.interfaceOrientation);
NSLog(@"interface orientation: %d", (int)self.interfaceOrientation);

他们都打印出1

但是当我将此代码放在 willRotateToInterfaceOrientation 方法中时，它们会打印出正确的int值（1,2,3或4）。

but when I put this code in the willRotateToInterfaceOrientation method, then they print out the correct int values (1,2,3 or 4).

推荐答案

如何检查viewDidAppear中的方向：相反？您可以使用动画来决定是否使用动画进行旋转。您可以看到视图然后旋转，但我认为这是一种可接受的体验。

What about checking the orientation in viewDidAppear: instead? You can use the 'animated' to decide if you will rotate with animation or not. You view may appear and then rotate, but I think that would an acceptable experience.

编辑：作为我的评论的后续内容，这里是从Xcode 4拍摄的屏幕截图UIInterfaceOrientation：

as a follow up to my comments, here's the screen shot from Xcode 4 for UIInterfaceOrientation:

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