title: Drawing a solid line in a UITableViewCell
body: <p>I don't know anything about graphics or drawing so I assume that's why I can't figure out what to look for to solve this.</p>
  
  <p>Here's what I got in my UITableViewCell's drawRect</p>
  
  <pre><code>- (void)drawRect:(CGRect)rect {
      [super drawRect:rect];
      CGContextRef ctx = UIGraphicsGetCurrentContext();
      CGContextSetRGBStrokeColor(ctx, 0.0, 0.0, 0.0, 1.0);
      CGContextSetLineWidth(ctx, 0.25);
  
      for (int i = 0; i &lt; [columns count]; i++) {
          CGFloat f = [((NSNumber*) [columns objectAtIndex:i]) floatValue];
          CGContextMoveToPoint(ctx, f, 0);
          CGContextAddLineToPoint(ctx, f, self.bounds.size.height);
      }
      CGContextStrokePath(ctx);
  }
  </code></pre>
  
  <p>I think this should be drawing a black line but the line is gray, blending with what's in the background. How can I draw a solid line that is not influenced by a background image? I've tried all the blend mode's thinking maybe one would be like a blend mode none, because I don't want any blending, but all draw lines that blend in some way with the background.</p>