iOS移除一个subView的技巧

我们知道[parentView removeFromSuperView];  会把全部的view都移除。以下我们可以通过给subView设一个tag,然后遍历所有的subView,找到目标subView再删除。
1 for (UIView *subviews in [self.view subviews]) {
2         if (subviews.tag==22) {
3             [subviews removeFromSuperview];
4         }
5     }

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