iOS画虚线------

偏执的太偏执、 2023-10-17 16:27 2阅读 0赞

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];
    }