Question

我有ViewController（Passwordviewcontroller），我想用“presentModalviewController”显示

我有一个AppDeleage：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    return YES;
}

这是我希望PasswordviewController显示的My ViewController：

-ViewDidLoad
{
    self.passwordView = [[PasswordView alloc]initWithNibName:@"PasswordView" bundle:nil];
    [passwordView setModalPresentationStyle:UIModalPresentationFullScreen];
    [self presentModalViewController:passwordView animated:YES];
}

我尝试了一切，但仍然无法正常工作，有人有想法吗？

Answer 1

将其放在viewDidAppear而非viewDidLoad中。在viewDidLoad中，您的视图可能会加载到内存中，但不一定要在屏幕上显示。另一方面，在viewDidAppear中，您的视图已准备好显示在窗口中正确插入，以便您可以显示模态视图。

修改：根据评论

将viewWillAppear更改为viewDidAppear

Ipad presentModalViewController在ViewController上

1 个答案: