#pragma mark ------------  searchBar 代理方法  --------------------------

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText

{

    /**< 模糊查找*/

    NSPredicate *predicateString = [NSPredicate predicateWithFormat:@"%K contains[cd] %@", @"name", searchText];

    self.searchResultArray = [NSArray arrayWithArray:[_allCityArray filteredArrayUsingPredicate:predicateString]];

    /**< 精确查找*/

    //  NSPredicate *predicateString = [NSPredicate predicateWithFormat:@"%K == %@", @"name", searchText];

    [self.searchDisplayController.searchResultsTableView reloadData];

}