ios - UIStoryBoard 从 ApplicationDelegate 获取第一个 View Controller

Question

我有一个我的 ApplicationDelegate 实现的协议(protocol)。我想将其传递给 Storyboard中定义的第一个 View Controller 。我如何从该方法访问它？

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

Answer 1

我不确定我是否正确理解了这个问题我想你是在问如何在 Storyboard 中获得第一个 viewController。为了得到这个你打电话，

UIStoryboard *storybord = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
UIViewController *vc =[storybord instantiateInitialViewController];

更改 Storyboard的名称以适合您的名称，MainStoryboard 只是默认名称。希望这就是您要找的。

编辑:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    UIStoryboard *storybord = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    UIViewController *vc =[storybord instantiateInitialViewController];
    //set the delegate on the view controller that you have loaded
    // Override point for customization after application launch.
    return YES;
}