Question

我正在使用自定义的tableview单元格（如Tweetie的快速滚动）我在上下文中添加了一个渐变，看起来非常好，但是当我选择单元格时，渐变仍然是可见的。我不确定在选择单元格时如何去除渐变？有任何想法吗？

欢呼声

的Nik

 - (void)drawContentView:(CGRect)r
{
 CGContextRef context = UIGraphicsGetCurrentContext();

 UIColor *backgroundColor = [UIColor whiteColor];
 UIColor *textColor = [UIColor blackColor];
 UIColor *dateColor = [UIColor colorWithRed:77.f/255.f green:103.f/255.f blue:155.f/255.f alpha:1];

 if(self.selected)
 {


  backgroundColor = [UIColor clearColor];
  textColor = [UIColor whiteColor];


 }
 [backgroundColor set];
 CGContextFillRect(context, r);

 //add gradient
 CGGradientRef myGradient;
 CGColorSpaceRef myColorspace;

 size_t num_locations = 2;
 CGFloat locations[2] = {0.0, 1.0};
 CGFloat components[8] = {0.9f, 0.9f, 0.9f, 0.7f, // Bottom Colour: Red, Green, Blue, Alpha.
  1.0f, 1.0f, 1.0f, 1.0}; // Top Colour: Red, Green, Blue, Alpha.

 myColorspace = CGColorSpaceCreateDeviceRGB();
 myGradient = CGGradientCreateWithColorComponents (myColorspace, components,
               locations, num_locations);

 CGColorSpaceRelease(myColorspace);

 CGPoint startPoint, endPoint;
 startPoint.x = 0;
 startPoint.y = self.frame.size.height;
 endPoint.x = 0;
 endPoint.y = self.frame.size.height-15; // just keep the gradient static size, never mind how big the cell is
 CGContextDrawLinearGradient (context, myGradient, startPoint, endPoint, 0); 
 CGGradientRelease(myGradient);

 //gradient end

    //rest of custom drawing goes here....

    }

我应该在if cell选择的代码中做些什么吗？

Answer 1

看起来我在发布后找到了灵感;-)我只是将渐变内容包装在if（！self.selected）{draw gradient}希望这可以帮助某人，这看起来更简单，并且使用更少cpu一个uiimagevew （汤姆）

自定义UITableviewcell，CGGradient仍显示何时选择单元格？

1 个答案: