iphone - removeFromSuperview 移除所有 subview

Question

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
    NSLog(@"will rotation");

    for (UIButton *button in self.view.subviews) {
        [button removeFromSuperview];
    }

}

我对这段代码有疑问。我只需要从我的 View 中删除 UIButtons。但是这段代码也删除了我的 self.view 的所有 subview 。我该如何解决这个问题？

Answer 1

这样做:

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
NSLog(@"will rotation");

   for (id subview in self.view.subviews) {
    if([subview isKindOfClass:[UIButton class]]) //remove only buttons
    {
      [subview removeFromSuperview];
    }
   }

}