Xcode 切换到横向时更改情节提要

当用户在AppDelegate.m文件中切换到横向到纵向模式时，有没有办法更改情节提要？我已经为不同的IOS切换到不同的情节提要，但我无法从横向切换到纵向模式。我已经构建了一个名为iPadios5横向的情节提要，我正在使用此功能切换到情节提要方法mainStoryboard=[UIStoryboard Storyboard，名称：@ipadios5横向束：nil]；但我不知道如何检测方向。把它放在这个代码中是很重要的

if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"6.0")==NO)
    {

            if (iOSDeviceScreenSize.height == 480)
            {

                mainStoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard_iPhone_ios5" bundle:nil];
            }

            if (iOSDeviceScreenSize.height == 1024)
{
    UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
    if(orientation == 0) //Default orientation
        //UI is in Default (Portrait) -- this is really a just a failsafe.
        mainStoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard_iPad_ios5" bundle:nil];

        else if(orientation == UIInterfaceOrientationPortrait)
            //Do something if the orientation is in Portrait
            mainStoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard_iPad_ios5" bundle:nil];

            else if(orientation == UIInterfaceOrientationLandscapeLeft)
                // Do something if Left
                mainStoryboard = [UIStoryboard storyboardWithName:@"iPadios5landscape" bundle:nil];

                else if(orientation == UIInterfaceOrientationLandscapeRight)
                    //Do something if right
                    mainStoryboard = [UIStoryboard storyboardWithName:@"iPadios5landscape" bundle:nil];

                    }

---

这可能吗？

将其粘贴在此处以检测方向，然后在设备方向为横向或纵向时设置情节提要

 UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
if(orientation == 0) //Default orientation 
    //UI is in Default (Portrait) -- this is really a just a failsafe. 
 else if(orientation == UIInterfaceOrientationPortrait)
    //Do something if the orientation is in Portrait
else if(orientation == UIInterfaceOrientationLandscapeLeft)
    // Do something if Left
else if(orientation == UIInterfaceOrientationLandscapeRight)
    //Do something if right

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我用了你的代码，把它和我的代码混在了一起。在我的问题中，检查一下。