iphone - How can I use CGContextDrawTiledImage to tile an image?

Question

I want to be able to an UI object like a UIImageView and tile an image inside of it.

I have been able to use CGContextDrawTiledImage to update the background in the main window, but not an image view. I can do this if I modify the drawRect function inside the MainView class.

I feel I'm close, but still missing something. Can someone point me in the right direction?

- (void)drawRect:(CGRect)rect {

CGImageRef image = CGImageRetain(currentImage.CGImage);

CGRect imageRect;
imageRect.origin = CGPointMake(160, 240);
imageRect.size = CGSizeMake(320.0, 480.0);

CGContextRef uiContext = UIGraphicsGetCurrentContext();

CGContextClipToRect(uiContext, CGRectMake(0.0, 0.0, rect.size.width, rect.size.height));

CGContextDrawTiledImage(uiContext, imageRect, image);

}

Answer 1

If you just want to tile an image in the view, change it to a normal UIView and tile the background with UIColor initWithPatternImage:

backgroundView.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageWithContentsOfFile:[self bundlePath:@"some_tile_image.png" inDirectory:@"tiles"]]];