UISearchbar案例不敏感?

时间:2010-03-16 22:31:57

标签: ios iphone uisearchbar case-sensitive

在表格视图中,我设置了一个UISearchBar,设置了委托,并添加了协议。

当用户点击一个单词时,除了搜索“网球”与“网球”不同外,一切都没问题。

如何使搜索栏成为不区分大小写的UISearchBar?这是我的代码,我认为事情发生了:

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
 [tableData removeAllObjects];// remove all data that belongs to previous search
 if([searchText isEqualToString:@""]||searchText==nil){
  [myTableView reloadData];
  return;
 }
 NSInteger counter = 0;
 for(NSString *name in dataSource)
 {
  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init];
  NSRange r = [name rangeOfString:searchText];
  if(r.location != NSNotFound)
   [tableData addObject:name];
  counter++;
  [pool release];
 }
 [myTableView reloadData];
}

4 个答案:

答案 0 :(得分:14)

最简单的方法可能是

 NSRange r = [name rangeOfString:searchText options:NSCaseInsensitiveSearch];

答案 1 :(得分:2)

试试这个。

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
    [DetailSearchArray removeAllObjects];// remove all data that belongs to previous search

    if([searchText isEqualToString:@""]){
        [table reloadData];
        return;
    }

    NSInteger counter = 0;
    NSArray *result = [[NSArray alloc] initWithArray:[resultArray filteredArrayUsingPredicate:predicate]];

    for (NSString *name in  resultArray  ) {
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init];
        NSRange r = [name rangeOfString:searchText options:NSCaseInsensitiveSearch];
        //NSRange r=[name rangeOfString:searchText options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [searchText length])];
        if(r.location != NSNotFound)
        {
            if(r.location== 0)//that is we are checking only the start of the names.
            {
                [DetailSearchArray addObject:name]; 
            }
        }

        }
        counter++;
        [pool release];
    }

    [table reloadData];
}

答案 2 :(得分:1)

进行比较时,请尝试使用小写版本。

NSRange r = [[name lowercaseString] rangeOfString:[searchText lowercaseString]];

只是为了澄清,这不会改变任何值,只返回原始的小写版本,然后用来与之进行比较,

答案 3 :(得分:0)

Theres有些'lowercaseString'功能,不知道我遇到了什么,因为我与iPhone无关,我敢肯定,如果你谷歌它你会找到一些东西。