如何绘制UIImage或直接在-drawRect中：？ [英] How to draw an UIImage or directly in -drawRect:?

问题描述

我有一个 UIImage ，我想在 UIView 上绘制。但是，我不想创建 UIImageView 并将其添加为子视图，而是要覆盖 -drawRect：并绘制UIView

   -  
 （void）drawRect：（CGRect）rect {
 CGContextRef myContext = UIGraphicsGetCurrentContext（）; 
 
 UIImage * img = [UIImage imageNamed：@foo.png]; 
 
 //如何直接绘制到视图中？ 
} 
  

解决方案

致电 [img drawInRect：rect]; 。

I have an UIImage which I want to draw on a UIView. But instead of creating an UIImageView and adding this as a subview, I want to overwrite -drawRect: and draw my UIView directly.

For example, my code looks like:

- (void)drawRect:(CGRect)rect {
    CGContextRef myContext = UIGraphicsGetCurrentContext();

    UIImage *img = [UIImage imageNamed:@"foo.png"];

    // how to draw the directly into the view now?
}

解决方案

Call [img drawInRect:rect];.

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