不调用searchBarCancelButtonClicked委托方法.有什么方法可以打电话吗？

Question

UIViewController用于实现放置UITableView UISearchBar并正在实现的视图.但你不能调用searchBarCancelButtonClicked.不知道是什么原因.

Answer 1

确保将UIViewController设置为UISearchBar的委托,并且它采用UISearchBarDelegate协议.

Answer 2

searchBarCancelButtonClicked无法触发的原因可能是因为您的UISearchBar未显示"取消"按钮.您可以像这样显示"取消"按钮:

searchBar.showsCancelButton = true

我有同样的问题,并使取消按钮显示searchBarCancelButtonClicked火如预期.

Answer 3

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
   // This method has been called when u enter some text on search or Cancel the search.
   // so make some condition for example:

   if([searchText isEqualToString:@""] || searchText==nil) {
        // Nothing to search, empty result.
        searching = NO;
        [mytableView reloadData];
    }
}

希望能帮助到你.