iOS画虚线-------蒲公英云

iOS画虚线------

直接上代码了

// 画虚线
    // 创建一个imageView 高度是你想要的虚线的高度 一般设为2
    UIImageView *lineImg = [[UIImageView alloc] initWithFrame:CGRectMake(0, 20, kScreenWidth, 1)];
    // 调用方法 返回的iamge就是虚线
    [self drawDashLine:lineImg lineLength:4 lineSpacing:3 lineColor:GCOLOR];
//    lineImg.backgroundColor = GCOLOR;
    // 添加到控制器的view上
    [self addSubview:lineImg];
    self.lineImg = lineImg;
    [lineImg mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.mas_equalTo(@0);
        make.top.equalTo(staImg.mas_bottom).offset(5);
        make.height.mas_equalTo(@1);
    }];
/**
 ** lineView:       需要绘制成虚线的view
 ** lineLength:     虚线的宽度
 ** lineSpacing:    虚线的间距
 ** lineColor:      虚线的颜色
 **/
- (void)drawDashLine:(UIView *)lineView lineLength:(int)lineLength lineSpacing:(int)lineSpacing lineColor:(UIColor *)lineColor{
    CAShapeLayer *shapeLayer = [CAShapeLayer layer];
    [shapeLayer setBounds:lineView.bounds];
    [shapeLayer setPosition:CGPointMake(CGRectGetWidth(lineView.frame) / 2, CGRectGetHeight(lineView.frame))];
    [shapeLayer setFillColor:[UIColor clearColor].CGColor];
    //  设置虚线颜色为
    [shapeLayer setStrokeColor:lineColor.CGColor];
    //  设置虚线宽度
    [shapeLayer setLineWidth:CGRectGetHeight(lineView.frame)];
    [shapeLayer setLineJoin:kCALineJoinRound];
    //  设置线宽，线间距
    [shapeLayer setLineDashPattern:[NSArray arrayWithObjects:[NSNumber numberWithInt:lineLength], [NSNumber numberWithInt:lineSpacing], nil]];
    //  设置路径
    CGMutablePathRef path = CGPathCreateMutable();
    CGPathMoveToPoint(path, NULL, 0, 0);
    CGPathAddLineToPoint(path, NULL, CGRectGetWidth(lineView.frame), 0);
    [shapeLayer setPath:path];
    CGPathRelease(path);
    //  把绘制好的虚线添加上来
    [lineView.layer addSublayer:shapeLayer];
}