ios - 从右点更改 UISearchBar 宽度

Question

我有 UISearchBar，我希望它在点击时展开。我有像这样的动画:

[UISearchBar beginAnimations:nil context:NULL];
[UISearchBar setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UISearchBar setAnimationDuration:0.5];
[self.searchBar setFrame:CGRectMake(self.searchBar.frame.origin.x, self.searchBar.frame.origin.y, self.searchBar.frame.size.width +100, self.searchBar.frame.size.height)];
[UISearchBar commitAnimations];

这是有效的，但它从左到右扩展它，但我希望它从右到左扩展它。我想做一些类似在界面生成器中的操作，您可以从 9 个点中选择 1 个点来扩展。

我尝试设置

[searchBar.layer setAnchorPoint:CGPointMake(1, 0.5)];

但是没有成功。

马可

Answer 1

您可以执行以下操作:

[UIView animateWithDuration:0.5
                 animations:^{
                     [UIView animateWithDuration:1.0 animations:^{
                         self.searchBar.frame = CGRectMake(self.searchBar.frame.origin.x - 50.0f, self.searchBar.frame.origin.y, self.searchBar.frame.size.width + 50.0f, self.searchBar.frame.size.height);
                         [self.searchBar layoutSubviews];
                     }];
                 }
                 completion:^(BOOL finished){  }];

这将使右侧粘住并看到左侧的生长。