- CGRect rc = [cell convertRect:cell.btn.frame toView:self.view];
- 或
- CGRect rc = [self.view convertRect:cell.btn.frame fromView:cell];
-
- 或当已知btn时：
- CGRect rc = [btn.superview convertRect:btn.frame toView:self.view];
- 或
- CGRect rc = [self.view convertRect:btn.frame fromView:btn.superview];
转换坐标系
原文：http://www.cnblogs.com/jingdizhiwa/p/5445619.html
