画虚线

- (void)drawLine

{

UIView*lineView = [[UIViewalloc]init];

lineView.backgroundColor= [UIColorwhiteColor];

lineView.frame=CGRectMake(10,50,kScreenWidth-50,0.5);

[selfaddSubview:lineView];

CAShapeLayer*shapeLayer = [CAShapeLayerlayer];

[shapeLayersetBounds:lineView.bounds];

[shapeLayersetPosition:CGPointMake(CGRectGetWidth(lineView.frame) /2,CGRectGetHeight(lineView.frame))];

[shapeLayersetFillColor:[UIColorclearColor].CGColor];

//设置虚线颜色为blackColor

//[shapeLayer setStrokeColor:[UIColor colorWithRed:238.0/255.0 green:238.0/255.0 blue:238.0/255.0 alpha:1.0].CGColor];

[shapeLayersetStrokeColor:[UIColorlightGrayColor].CGColor];

//设置虚线宽度

[shapeLayersetLineWidth:CGRectGetHeight(lineView.frame)];

[shapeLayersetLineJoin:kCALineJoinRound];

//设置线宽，线间距

[shapeLayersetLineDashPattern:[NSArrayarrayWithObjects:[NSNumbernumberWithInt:3],[NSNumbernumberWithInt:1],nil]];

//设置路径

CGMutablePathRefpath =CGPathCreateMutable();

CGPathMoveToPoint(path,NULL,0,0);

CGPathAddLineToPoint(path,NULL,CGRectGetWidth(lineView.frame),0);

[shapeLayersetPath:path];

CGPathRelease(path);

//把绘制好的虚线添加上来

[lineView.layer addSublayer:shapeLayer];

}

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