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这是一个创建于 2238 天前的主题，其中的信息可能已经有所发展或是发生改变。
1 像素线的标准做法，但是在 iphone xs max 上闪动，有人遇到过吗？
代码如下：
#define SINGLE_LINE_WIDTH (1 / [UIScreen mainScreen].scale)
#define SINGLE_LINE_ADJUST_OFFSET ((1 / [UIScreen mainScreen].scale) / 2)
UIView *cellHeadLine = [[UIView alloc] initWithFrame:CGRectMake(cell.bounds.origin.x, cell.bounds.origin.y - SINGLE_LINE_ADJUST_OFFSET, cell.bounds.size.width, SINGLE_LINE_WIDTH)];
cellHeadLine.backgroundColor = [UIColor colorGreyBorder];
[cell addSubview:cellHeadLine];
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