我正在创建自己的具有渐变背景的UITableViewCells。我把所有的逻辑和图纸制定出来,但有一点我想解决的是“chunkiness”在我的自定义单元格的角落:平滑核心图形中的圆形笔划
如果您在放大的角落,你可以看到我在说什么。这是我一个用来生成细胞代码:
CGContextRef c = UIGraphicsGetCurrentContext();
CGColorSpaceRef myColorspace = CGColorSpaceCreateDeviceRGB();
CGGradientRef myGradient = nil;
CGFloat components[8] = TABLE_CELL_BACKGROUND;
CGContextSetStrokeColorWithColor(c, [[UAColor colorWithWhite:0.7 alpha:1] CGColor]);
CGContextSetLineWidth(c, 2);
CGContextSetAllowsAntialiasing(c, YES);
CGContextSetShouldAntialias(c, YES);
CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ;
CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ;
CGMutablePathRef path = CGPathCreateMutable();
CGPathMoveToPoint(path, NULL, minx, miny);
CGPathAddArcToPoint(path, NULL, minx, maxy, midx, maxy, kDefaultMargin);
CGPathAddArcToPoint(path, NULL, maxx, maxy, maxx, miny, kDefaultMargin);
CGPathAddLineToPoint(path, NULL, maxx, miny);
CGPathAddLineToPoint(path, NULL, minx, miny);
CGPathCloseSubpath(path);
// Fill and stroke the path
CGContextSaveGState(c);
CGContextAddPath(c, path);
CGContextClip(c);
CGFloat locations[2] = { 0.0, 1.0 };
CGFloat mycomponents[8] = TABLE_CELL_BACKGROUND;
CGColorSpaceRef myColorspace = CGColorSpaceCreateDeviceRGB();
myGradient = CGGradientCreateWithColorComponents(myColorspace, mycomponents, locations, 2);
CGContextDrawLinearGradient(c, myGradient, CGPointMake(minx,miny), CGPointMake(minx,maxy), 0);
CGContextRestoreGState(c);
CGContextAddPath(c, path);
CGContextStrokePath(c);
我能做些什么平滑的边缘,同时保持所有细胞一致的边缘厚度?
这种方法比Peter的方法更流畅:http://grab.by/2836 – coneybeare 2010-02-02 03:11:10
真是个好的答案。立即改善我的线条。谢谢! – typeoneerror 2011-08-09 02:53:11