UIViewController.View.Window is null in ViewDidLoad method

iphone ios cocoa-touch xamarin.ios
cheesus picture cheesus · Apr 23, 2012 · Viewed 9.2k times · Source

Regardless on which controller type (UIViewController, UITableViewController), the following line always yields null in the ViewDidLoad method:

this.View.Window

Is this behavior normal, or am I doing something odd? What could lead to UIViewController.View.Window being null?

(I suppose this question concerns not only MonoTouch, but also 'normal' Objective-C Cocoa).

(MonoTouch 5.2.11, Xcode 4.2.1 4D502)

Answer

sch picture sch · Apr 23, 2012

According to the documentation of UIView, the window property is nil if the view has not yet been added to a window which is the case when viewDidLoad is called.

Related questions

Detect whether an UIImage is PNG or JPEG?

Currently doing my first steps with iPhone development through MonoTouch, I am playing with an UIImage that I read from the photo library. What I want to achieve is to get the raw byte array (byte[]) of the image. I …

Read More
How to load a UIView using a nib file created with Interface Builder

I'm trying to do something a bit elaborate, but something that should be possible. So here is a challenge for all you experts out there (this forum is a pack of a lot of you guys :) ). I'm creating a Questionnaire "…

Read More
How do I draw a shadow under a UIView?

I'm trying to draw a shadow under the bottom edge of a UIView in Cocoa Touch. I understand that I should use CGContextSetShadow() to draw the shadow, but the Quartz 2D programming guide is a little vague: Save the graphics …

Read More