1 + (void)drawDashLine:(UIView *)lineView lineLength:(int)lineLength lineSpacing:(int)lineSpacing lineColor:(UIColor *)lineColor 2 { 3 CAShapeLayer *shapeLayer = [CAShapeLayer layer]; 4 [shapeLayer setBounds:lineView.bounds]; 5 [shapeLayer setPosition:CGPointMake(CGRectGetWidth(lineView.frame) / 2, CGRectGetHeight(lineView.frame))]; 6 [shapeLayer setFillColor:[UIColor clearColor].CGColor]; 7 // 设置虚线颜色 8 [shapeLayer setStrokeColor:lineColor.CGColor]; 9 // 设置虚线宽度 10 [shapeLayer setLineWidth:CGRectGetHeight(lineView.frame)]; 11 [shapeLayer setLineJoin:kCALineJoinRound]; 12 // 设置线宽，线间距 13 [shapeLayer setLineDashPattern:[NSArray arrayWithObjects:[NSNumber numberWithInt:lineLength], [NSNumber numberWithInt:lineSpacing], nil]]; 14 // 设置路径 15 CGMutablePathRef path = CGPathCreateMutable(); 16 CGPathMoveToPoint(path, NULL, 0, 0); 17 CGPathAddLineToPoint(path, NULL, CGRectGetWidth(lineView.frame), 0); 18 [shapeLayer setPath:path]; 19 CGPathRelease(path); 20 // 把绘制好的虚线添加上来 21 [lineView.layer addSublayer:shapeLayer]; 22 }