如何也用 iPhone 创建 iPad 故事板

Question

大家好，我有一些小问题。所以我在我的项目中使用了三个故事板，有 iPhone 4s 故事板/iPhone 5，我也为 iPad 创建。因此，对于选择故事板，我使用以下代码：

UIStoryboard * mainStoryboard = nil ;   
CGRect screenBounds = [[UIScreen mainScreen] bounds];
if (screenBounds.size.height == 568) {
    mainStoryboard = [ UIStoryboard storyboardWithName : @ "iPhone5" bundle : nil ] ;

} else {
    mainStoryboard = [ UIStoryboard storyboardWithName : @ "iPhone4s" bundle : nil ] ;

}
self.window = [ [ UIWindow alloc ] initWithFrame : [ [ UIScreen mainScreen ] bounds ] ] ;
self.window.rootViewController = [ mainStoryboard instantiateInitialViewController ] ;
[ self.window makeKeyAndVisible ] ;

完美运行，但不适用于 iPad。在这段代码之后，我的 iPad 故事板看不到。如何使用所有这些故事板选择 iPad 故事板。我理解我的问题，但我找不到好的解决方案。它是如何创建的？谢谢。

我也试过这个......但没有。

if ([[UIDevice currentDevice] userInterfaceIdiom] ==UIUserInterfaceIdiomPhone)
{
    UIStoryboard * mainStoryboard = nil ;

         CGRect screenBounds = [[UIScreen mainScreen] bounds];
           if (screenBounds.size.height == 568) {
          mainStoryboard = [ UIStoryboard storyboardWithName : @ "iPhone5" bundle : nil ] ;

          } else {
              mainStoryboard = [ UIStoryboard storyboardWithName : @ "iPhone4s" bundle : nil ] ;

          }

}
else
{
    UIStoryboard *appropriateStoryboard = [self storyboard];
    self.window.rootViewController = [appropriateStoryboard instantiateInitialViewController];
    return YES;
    - (UIStoryboard *)storyboard
    {
        NSString *storyboardName = @"iPadMyBoard";
        if ([self isPad]) {
            storyboardName = [storyboardName stringByAppendingString:@""];
        }
        return [UIStoryboard storyboardWithName:storyboardName bundle:nil];
}

    -(BOOL)isPad
    {
        return (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad);
    }

Answer 1

您可以使用此代码

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{    
    UIStoryboard *appropriateStoryboard = [self storyboard];
    self.window.rootViewController = [appropriateStoryboard instantiateInitialViewController];
    return YES;
}

- (UIStoryboard *)storyboard
{
    NSString *storyboardName;
    if ([self isPad])
    {
        storyboardName = @"iPadMyBoard";
    }
    else
    {
        if ([self isPhone5])
        {
            storyboardName = @"iPhone5";
        }
        else
        {
            storyboardName = @"iPhone4s";
        }
    }
    return [UIStoryboard storyboardWithName:storyboardName bundle:nil];
}

-(BOOL)isPad
{
    return (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad);
}

-(BOOL)isPhone5
{
    CGRect screenBounds = [[UIScreen mainScreen] bounds];
    if (screenBounds.size.height == 568){
        return YES;
    }
    return NO;
}