#pragma mark 绘制直线- (void) drawLine : (CGContextRef) context {        //绘制底部表格横线  行高40    for (int i = 0; i < 7; i++){        //设置开始位置        CGContextMoveToPoint(context, 30, 40+40*i);        //设置结束位置        CGContextAddLineToPoint(context, WIDTH - 10, 40+40*i);                UILabel *lab = [[UILabel alloc]initWithFrame:CGRectMake(5, 20+40*i, 20, 40)];        lab.textColor = [UIColor whiteColor];        lab.textAlignment = NSTextAlignmentRight;        lab.text = [NSString stringWithFormat:@"%d",180-20*i];        lab.font = [UIFont fontWithName:@"PingFangSC-Medium" size:12];        [self addSubview:lab];            }    CGFloat jiange = (WIDTH - 40)/7.0;//行宽    //绘制底部表格竖线    for (int i = 0; i < 8; i++){        //设置开始位置        CGContextMoveToPoint(context, 30 + jiange*i, 0);        //设置结束位置        CGContextAddLineToPoint(context, 30 + jiange*i, 307);    }    [[UIColor whiteColor] setStroke];//设置线条颜色    CGContextSetLineWidth(context, 1);//设置线条宽度    CGContextDrawPath(context, kCGPathFillStroke);}#pragma mark 绘制底部背景色- (void)drawBackgroundColoc:(CGContextRef) context{    CGContextAddRect(context,self.bounds);//绘制矩形    CGContextSetFillColorWithColor(context, HEXCOLOR(0xEF5B5B).CGColor);//填充颜色    [HEXCOLOR(0xEF5B5B) setStroke];//设置线条颜色    CGContextSetLineWidth(context, 1);//设置线条宽度    CGContextDrawPath(context, kCGPathFillStroke);}- (void)drawRect:(CGRect)rect {        CGContextRef context = UIGraphicsGetCurrentContext();    [self drawBackgroundColoc:context];//绘制底部背景色    [self drawLine:context];//绘制底部网格线条}