在应用启动时，界面方向不会更改为横向 [英] Interface Orientation won't change to Landscape on App Launch

问题描述

我陷入一个使我发疯的问题！ 我有一个以TabBarViewController开头的iPad应用程序.每个Tab都有自己的ViewController和nib文件.

为使界面方向成为可能，我将所有方向都添加到了info.plist中，并将TabBarController子类化为设置方式:

        - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
        return YES;
}

如果我旋转界面，每个视图都会自动调整大小并格式化，以显示正确的方向.如果我在模拟器中对其进行测试，那么一切看起来都很好，并且我可以在方向"之间旋转.

现在，让我发疯的一点是

如果我以纵向模式启动该应用程序，则一切正常..但是，如果我以横向模式启动，则出现错误，并且当模拟器处于横向模式时，我的界面方向仍为纵向！

错误:

2011-05-24 21:50:15.011 Project[57995:207] Using two-stage rotation animation. To use the smoother single-stage animation, this application must remove two-stage method implementations.

我像这样检查方向:

    -(void)viewWillAppear:(BOOL)animated{

    UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];



    if ((orientation == UIInterfaceOrientationLandscapeLeft) || (orientation == UIInterfaceOrientationLandscapeRight)) {
        NSLog(@"Orientation: Landscape");
    }
    else{
        NSLog(@"Orientation: Portrait");
    }

}

如果在横向模式下启动日志，则日志说它处于横向"模式，但是如果我将选项卡更改为另一个选项，则它看起来很糟糕，因为视图以纵向模式显示. 回到我要求定向的开始视图时，日志显示纵向"……但是模拟器仍然是横向的！

我不知道为什么开始时方向是纵向的，… 即使我从风景开始...

有什么办法解决这个问题吗?

解决方案

我解决了这个问题！

在我的所有Views的viewWillAppear方法中仅使用此方法，以使其在横向模式下启动时可以工作:

if(([[UIApplication sharedApplication]statusBarOrientation] == UIInterfaceOrientationLandscapeLeft) || ([[UIApplication sharedApplication]statusBarOrientation] == UIInterfaceOrientationLandscapeRight)){        
    //Landscape View
}
else{
    //Portrait View
}

对我来说很好！

i stuck on a problem that drives me crazy! I have an iPad application starting with a TabBarViewController. Every Tab has it's own ViewController and nib-file.

To make interface orientation possible I added all orientations to my info.plist and subclassing my TabBarController to set:

        - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
        return YES;
}

Every View is autoresized and formatted well for displaying the right Orientation if I rotate the Interface. If I test it in the simulator, everything looks fine and I can rotate between the Orientations.

Now the point that drives me crazy:

If I launch the App in Portrait Mode, all works fine.. but if I launch in Landscape, I get an error and my Interface orientation seems still to be Portrait, while the Simulator is in Landscape Mode!!

The Error:

2011-05-24 21:50:15.011 Project[57995:207] Using two-stage rotation animation. To use the smoother single-stage animation, this application must remove two-stage method implementations.

I checked for Orientation like this:

    -(void)viewWillAppear:(BOOL)animated{

    UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];



    if ((orientation == UIInterfaceOrientationLandscapeLeft) || (orientation == UIInterfaceOrientationLandscapeRight)) {
        NSLog(@"Orientation: Landscape");
    }
    else{
        NSLog(@"Orientation: Portrait");
    }

}

The Log says it is in "Landscape" Mode if I launch in Landscape, but if I change tab to another it looks terrible because the View is displayed in Portrait mode instead. On change back to the start-view where i asked for Orientation… the log displays "Portrait"… but the Simulator is still Landscape!

I can't figure out why the Orientation is Portrait on start,… even if I start in Landscape…

Any idea how to solve this problem?

解决方案

I solved the problem!

Simply used this in viewWillAppear method of all my Views, to make it work when started in Landscape mode:

if(([[UIApplication sharedApplication]statusBarOrientation] == UIInterfaceOrientationLandscapeLeft) || ([[UIApplication sharedApplication]statusBarOrientation] == UIInterfaceOrientationLandscapeRight)){        
    //Landscape View
}
else{
    //Portrait View
}

Works fine for me!

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