Question

如果两个故事板在3.5英寸屏幕上运行，而另一个用于4英寸屏幕，则将其放置在两个故事板的代码中。我有两个故事板。一个名为Main.storyboard，另一个名为Main2.storyboard。

Answer 1

代码进入AppDelegate.m文件，看起来与此类似

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    UIStoryboard *mainstoryboard = [UIStoryboard storyboardWithName:@"AlternateStoryboard" bundle:nil];
    UIViewController *vc = [mainstoryboard instantiateInitialViewController];
    self.window.rootViewController = vc;

    return YES;
}

您首先需要检查屏幕尺寸，当然，请参阅UIScreen的文档。

Answer 2

这样的事可能会有所帮助。在AppDelegate的application:didFinishLaunchingWithOptions:方法中：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone 
       && [UIScreen mainScreen].bounds.size.height == 568.0) {

        //is 4 inch screen
        UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
        UIViewController *viewController = [storyboard instantiateInitialViewController];
        self.window.rootViewController = viewController;
    }
    else {
        //is 3.5 inch screen
        UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main2" bundle:nil];
        UIViewController *viewController = [storyboard instantiateInitialViewController];
        self.window.rootViewController = viewController;
    }

    return YES;
}

if/else语句检查屏幕大小并加载相应的故事板。

如何使用2个故事板用于不同的屏幕尺寸？

2 个答案: