iphone - UISearchBar 不向上移动

Question

我不知道为什么默认动画会失败。

我的搜索栏没有按预期向上移动。

View 在 UIView 中，我想知道是否是这个问题。

包括IB布局

Answer 1

在“俯卧撑”动画中，搜索栏实际上并没有移动。相反，它会在导航栏上升时保持原位，从而拉动 View 的其余部分。您应该能够通过注册为它的委托(delegate) (UISearchBarDelegate) 并响应这些调用，在代码中手动移动搜索栏。

#pragma mark - UISearchBarDelegate Methods
- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar {
    //move the search bar up to the correct location eg
    [UIView animateWithDuration:.4
                 animations:^{ 
                     searchBar.frame = CGRectMake(searchBar.frame.origin.x,
                                                  0,
                                                  searchBar.frame.size.width,
                                                  searchBar.frame.size.height);
                 } 
                 completion:^(BOOL finished){
                     //whatever else you may need to do
                 }];
}

- (BOOL)searchBarShouldEndEditing:(UISearchBar *)searchBar {
    //move the search bar down to the correct location eg
    [UIView animateWithDuration:.4
                 animations:^{ 
                     searchBar.frame = CGRectMake(searchBar.frame.origin.x,
                                                  /*SearchBar original Y*/,
                                                  searchBar.frame.size.width,
                                                  searchBar.frame.size.height);
                 } 
                 completion:^(BOOL finished){
                     //whatever else you may need to do
                 }];
}