Home/ Questions/Q 4240718
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-21T03:12:12+00:00

Is there a way with a UIView (or UIWindow) to override a method that

  • 0

Is there a way with a UIView (or UIWindow) to override a method that will be called when the View (or Window) is first shown on the screen?

Note: I do not have a UIViewController in this application, and I would prefer to keep it that way if possible.

This would be similar to registering for the Activated event on a WPF Window?

I need to know when a View is actually showing on the screen before an action can be taken.

Also on iOS 4 with multi-tasking is there an override to get a notification for when your are “re-launched” so you can know the difference a first time a View is show and being shown again from multi-task switching?

Okay with MonoTouch C# or Objective-C examples/answers.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    The override public override void ViewDidAppear (bool animated) in UIViewController will show when a view is shown on the screen.

    With the multitasking there is an override in the App Delegate: public override void WillEnterForeground (UIApplication application) you could fire off an event (C#) or send off a UINotification via iOS Notification Center which the UIViews could subscribe to, telling them that the application has resumed from the background.

    • 0