在 AppDelegate 中从 applicationDidFinishLaunching 加载另一个视图 [英] Load an other View from applicationDidFinishLaunching in the AppDelegate

问题描述

我在 AppDelegate 的 applicationDidFinishLaunching 中有此代码:

I have this code in my applicationDidFinishLaunching in the AppDelegate:

- (void)applicationDidFinishLaunching:(UIApplication *)application {
 NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
    NSString *firsttime = [defaults stringForKey:@"firsttime"];
    if (firsttime == nil) {

        BenutzerdatenViewController *Benutzer = [[BenutzerdatenViewController alloc] initWithNibName:nil bundle:nil];
        Benutzer.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
        [Benutzer release];

        [defaults setObject:@"lasttime" forKey:@"firsttime"];}
    else {  [window addSubview:viewController.view];
        [window makeKeyAndVisible];}

总是当我第一次打开应用程序时，我只会看到一个带有视图"的视图，而不是带有按钮等的正确视图.问题出在哪里?

Always when I open the app the first time I just see a with "view" instead of the right view with buttons and so on. Where is the problem?

推荐答案

您需要将实际视图添加到您的窗口中.第一次，您需要以下内容:

You need to add the actual view to your window. For firsttime, you need the following:

[window addSubview: Benutzer.view];

另外，不要释放那个viewController；您应该在某处存储对它的引用.

Also, don't release that viewController; you should store a reference to it somewhere.

在另一种情况下 (!firstime)，不清楚您从哪里获得 viewController；我假设它是一个成员变量.

In the other case (!firstime), it's unclear where you're getting viewController from; I assume it's a member variable.

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