//此方法目前只能添加在self视图上(如果有视图在self视图上,可能会遮盖线条),画的是虚线
//调用
[self drawRect:self.frame];
//覆写
- (void)drawRect:(CGRect)rect
{
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextBeginPath(context);
CGContextSetLineWidth(context, 1 *kScreenScale);//线条长度
CGContextSetStrokeColorWithColor(context, [UIColor colorWithHex:@"#959595"].CGColor);//线条颜色
CGFloat lengths[] = {2*kScreenScale,1*kScreenScale};//设置虚线
CGContextSetLineDash(context, 0, lengths, 2);//设置虚线
CGContextMoveToPoint(context, 5 *kScreenScale, 3*kScreenScale);//起点
CGContextAddLineToPoint(context, 360*kScreenScale, 3*kScreenScale);//画到第一个点
CGContextAddLineToPoint(context, 362*kScreenScale, 5*kScreenScale);//画到第二个点
CGContextAddLineToPoint(context, 362*kScreenScale, 100*kScreenScale);//以下类推
CGContextAddLineToPoint(context, 360*kScreenScale, 101*kScreenScale);
CGContextAddLineToPoint(context, 5*kScreenScale, 101*kScreenScale);
CGContextAddLineToPoint(context, 4*kScreenScale, 100*kScreenScale);
CGContextAddLineToPoint(context, 4*kScreenScale, 5*kScreenScale);
CGContextAddLineToPoint(context, 5 *kScreenScale, 3*kScreenScale);
CGContextStrokePath(context);//收尾
CGContextClosePath(context);//结束
}
iOS:绘图画虚线
最新推荐文章于 2016-11-08 11:46:10 发布