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//去的画布的上下文
CGContextRef context = UIGraphicsGetCurrentContext();
//画布大小
CGContextAddRect(context, rect);
//画布颜色
[self.buttonColor set];
//填充
CGContextFillPath(context);
UIBezierPath *roundeRectanglePath = [UIBezierPath bezierPathWithRoundedRect:CGRectInset(rect, 1, 1) cornerRadius:rect.size.height/2];
//填充颜色
[self.buttonColor setFill];
//连线
[roundeRectanglePath fill];
//线颜色
[[UIColor whiteColor] setStroke];
//线宽度
roundeRectanglePath.lineWidth = 1;
[roundeRectanglePath stroke];
//
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
paragraphStyle.alignment = NSTextAlignmentCenter;
NSDictionary *att = @{NSParagraphStyleAttributeName:paragraphStyle,NSForegroundColorAttributeName:[UIColor whiteColor],NSFontAttributeName:[UIFont systemFontOfSize:14]};
CGSize size = [self.buttonTitle sizeWithAttributes:att];
CGRect r = CGRectMake(rect.size.width/2 - size.width/2, rect.size.height/2 - size.height/2, size.width, size.height);
//可以是image，这样就可以绘制图像
[self.buttonTitle drawInRect:r withAttributes:att];
点击效果
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; NSUInteger tapCount = touch.tapCount; switch (tapCount) { case 1: self.buttonClickBlock(); break; default: break; } }
最终效果
.h文件
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原文地址：http://www.cnblogs.com/huoxingdeguoguo/p/5462676.html
