Re: Drawing something in UIViewController?
Re: Drawing something in UIViewController?
- Subject: Re: Drawing something in UIViewController?
- From: David Duncan <email@hidden>
- Date: Sat, 23 May 2009 21:20:10 -0700
On May 23, 2009, at 9:12 PM, Agha Khan wrote: Dear Sir:
I would like to draw some primitives to my UIViewController and at loadView I set it CGRect newRect = self.view.bounds; [self.view setNeedsDisplayInRect:newRect]; [self.view setNeedsDisplay];
These calls are redundant. You just asked for the view to invalidate its entire bounds twice. You only need the latter. and added -(void)drawRect:(CGRect)rect function.
Unless you added it to a UIView subclass, it will never be called.
How this can be done? My back ground is from Windows and this is my first application on IPhone.
My other question is how can I update the content of that UIViewController? Does this make any sense of this question?
A UIViewController is not a UIView subclass, and as such it won't do drawing for you. If you want to do custom drawing, then create a custom subclass of UIView and add your drawing there.
-- David Duncan Apple DTS Animation and Printing
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