ios - 在 IOS objective-c 中使用搜索栏的搜索栏/过滤过程

Question

谁能帮我找出为什么在搜索栏中输入文本时调用搜索栏委托(delegate)方法时我无法获取过滤后的数组

我的工具栏textDidChange方法

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{
     if(searchText.length == 0){
        isFiltered = NO;
     }else{
         isFiltered = YES;
         [filterdArray removeAllObjects];
         for(int i = 0; i < [productArray count]; i++){
              NSRange textRange;
              textRange =[[[[productArray objectAtIndex:i] objectForKey:@"senior_name"] lowercaseString] rangeOfString:[searchText lowercaseString]];

              if(textRange.location != NSNotFound){
                  [filterdArray addObject:[productArray objectAtIndex:i]];
                  NSLog(@"filterdArrayyyyyyyy:%@",filterdArray);
              }
         }
     }

     [self.residentListTableView reloadData];   
}

这是我的productArray，

(
    {
    id = 369;
    "room_no" = 101;
    "senior_name" = Tim;
},
    {
    id = 388;
    "room_no" = "<null>";
    "senior_name" = res444;
},
    {
    id = 382;
    "room_no" = "<null>";
    "senior_name" = tt1234;
},......

filterarray 返回 null，

我想根据“senior_name”过滤tableview

提前谢谢你，

Answer 1

您可以尝试使用以下代码来获得适当的结果。

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{
 if(searchText.length == 0){
    isFiltered = NO;
 }else{
     isFiltered = YES;
     [filterdArray removeAllObjects];
     for(int i = 0; i < [productArray count]; i++){
        if([[[[productArray objectAtIndex:i] objectForKey:@"senior_name"] lowercaseString] rangeOfString:[searchText lowercaseString]].length>0){
            [filterdArray addObject:[productArray objectAtIndex:i]];
            NSLog(@"filterdArrayyyyyyyy:%@",filterdArray);
        }
    }
 }

 [self.residentListTableView reloadData];   
 }