将光标重新定位在UISearchBar TextField中，顶部带有标签

Question

• 我的searchBar上有标签视图，标题为“12345”

• 此标签位于UISearchBar的textField部分之上

• 现在我正在尝试将光标定位在标签“12345”

之后

我这样做了：

UITextField *searchBarTextField = [self.searchField valueForKey: @"_searchField"];

UITextRange *selRange = searchBarTextField.selectedTextRange;
UITextPosition *selStartPos = selRange.start;
NSInteger idx = [searchBarTextField offsetFromPosition:searchBarTextField.beginningOfDocument toPosition:selStartPos];

idx = idx + 150;
[Util selectTextForInput:searchBarTextField atRange:NSMakeRange(idx, 50)];

Util.m

+ (void)selectTextForInput:(UITextField *)input atRange:(NSRange)range {
    UITextPosition *start = [input positionFromPosition:[input beginningOfDocument]
                                                 offset:range.location];
    UITextPosition *end = [input positionFromPosition:start
                                               offset:range.length];
    [input setSelectedTextRange:[input textRangeFromPosition:start toPosition:end]];
}

但它没有重新定位我的光标。缺少什么？

Answer 1

在tableView`s delegate中创建标签方法将标签添加到UISearch栏。

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    //get the content of selected cell 
    UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
    // now you can get the any content of the selected cell , for example 

    //Create your label
    UILabel *label = [UILabel alloc] init];
    label.text = selectedCell.label.text;
    /...customize your label as you wish .../

    //lastly add the label to the UISearch
    [yourSearchBar addSubView: label];


}