iPad 3 shouldRasterize = YES使UILabel文本被切断

Question

设置shouldRasterize为YES图层时遇到问题.在iPad3上,label.text的文字从底部切下约1/5的大小.任何人都知道问题是什么？

    cellview.layer.cornerRadius = 12.0;
    cellview.layer.borderColor = [UIColor blackColor].CGColor;
    cellview.layer.borderWidth = 1.0;
    cellview.layer.frame = rect;
    cellview.layer.shouldRasterize =YES;
    cellview.layer.masksToBounds = YES;

在iPad 2上,它工作正常.

Answer 1

设置光栅化的比例,因为iPad3的视网膜显示:

[cellview.layer setRasterizationScale:[[UIScreen mainScreen] scale]];