划线

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继承UIView 重写drawRect方法

#import "CustomLine.h"

@implementation CustomLine

-(void)drawRect:(CGRect)rect

{

CGContextRef context =UIGraphicsGetCurrentContext();

CGContextSetLineCap(context,kCGLineCapRound);

CGContextSetLineWidth(context,2);//线宽

CGContextSetAllowsAntialiasing(context,true);

CGContextSetRGBStrokeColor(context,210.0/ 255.0,210.0/255.0 , 210.0/255.0 , 1.0);

CGContextBeginPath(context);

CGContextMoveToPoint(context,0, 10);//起点坐标

CGContextAddLineToPoint(context,0,30);//坐标终点

CGContextStrokePath(context);

}

其他类中调用

CustomLine *line = [[CustomLinealloc]init];

line.backgroundColor = [UIColorwhiteColor];

line.frame = CGRectMake(kScreenWidth/2 ,0, 10, view.frame.size.height);

[view addSubview:line];

@end

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