IOS中如何画一条线或者虚线

发布时间：2020-06-17 17:04:03 来源：网络阅读：1554 作者：yuanyuhang 栏目：移动开发

//画线

UIImageView *p_w_picpathView = [[UIImageViewalloc]initWithFrame:CGRectMake(0, 80, SCREENWIDTH, 20)];

[self.viewaddSubview:p_w_picpathView];

UIGraphicsBeginImageContext(p_w_picpathView.frame.size);

[p_w_picpathView.p_w_picpathdrawInRect:CGRectMake(0, 0, p_w_picpathView1.frame.size.width, p_w_picpathView1.frame.size.height)];

CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);

CGFloat ls[] = {

5,5

};

CGContextRef context =UIGraphicsGetCurrentContext();

CGContextSaveGState(context);

CGContextSetLineWidth(context, 0.4);

CGContextSetStrokeColorWithColor(context, [UIColorblackColor].CGColor);

CGContextSetLineDash(context, 0, ls, 2);

CGContextBeginPath(context);

CGContextMoveToPoint(context, 5.0, 20.0);

CGContextAddLineToPoint(context, 310.0, 20.0);

CGContextStrokePath(context);

CGContextRestoreGState(context);

p_w_picpathView.p_w_picpath = UIGraphicsGetImageFromCurrentImageContext();

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