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Re: Improving drawing of UIView with many many Subviews
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Re: Improving drawing of UIView with many many Subviews


  • Subject: Re: Improving drawing of UIView with many many Subviews
  • From: David Duncan <email@hidden>
  • Date: Tue, 21 Dec 2010 08:57:04 -0800

Why not just use a UIImageView instead of implementing a custom UIView subclass to do this? If this is all you are doing a UIImageView is very often the superior choice.

On Dec 21, 2010, at 6:46 AM, Gustavo Adolfo Pizano wrote:

> and this is the drawrect method of the BCItemView
>
> // Only override drawRect: if you perform custom drawing.
> // An empty implementation adversely affects performance during animation.
> - (void)drawRect:(CGRect)rect {
>    // Drawing code.
>
> 	CGContextRef context = UIGraphicsGetCurrentContext();
> 	CGContextSaveGState(context);
> 	CGContextTranslateCTM(context, 0, CGImageGetHeight(bc_itemImage));
> 	CGContextScaleCTM(context, 1.0, -1.0);
> 	CGContextDrawImage(context, self.bounds, bc_itemImage);
> 	CGContextRestoreGState(context);
>
> }

--
David Duncan

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References: 
 >Improving drawing of UIView with many many Subviews (From: Gustavo Adolfo Pizano <email@hidden>)

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