ios - 包含 NSDictionary 的数组上的快速枚举循环

Question

我有一个包含字典的数组，我必须在这个数组上实现搜索功能并让它只显示在搜索栏中输入的文本......................... ......

我已经尝试过这段代码

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
    if (searchText.length == 0) {
        isFiltered = NO;
    }
    else {
        isFiltered = YES;

    FilteredData = [[NSMutableArray alloc]initWithArray:[ParsedData valueForKey:@"FolderName"]];       
    NSMutableArray *searchData = [NSMutableArray new];
    for(NSDictionary *dict in ParsedData){

        NSDictionary *tempDict= @{@"FolderName":dict[@"FolderName"],@"ID":dict[@"ID"]}              
        [searchData addObject:tempDict];

        SearchData = [[NSMutableArray alloc]initWithArray:searchData];
        NSLog(@"DATA %@",SearchData);

    }

    //Fast Enumeration

    for (NSString *fileName in FilteredData)
    {
        NSRange fileNameRange = [fileName rangeOfString:searchText options:NSCaseInsensitiveSearch];

        if (fileNameRange.location == NSNotFound) {

            [SearchData removeObject:[SearchData valueForKey:@"FolderName"]];

        }
    }

}

[listingSet reloadData];
}




 This is the data present in parsed data as below plz check out.parse data array is    getting data from an xml


 2013-05-02 15:14:19.935 DocumentManagement[423:207] PARSED DATA (
    {
    CreatedBy = 1;
    FolderName = Posteingang;
    ID = 13000;
    ParentID = 0;
},
  {
    CreatedBy = 1;
    FolderName = "my folder";
    ID = 13183;
    ParentID = 0;
 },

Answer 1

据我了解，您有一个字典数组存储在 parseData 数组中。您想要形成一个与值 FolderName 和 searchText 相匹配的子数组。

您可以使用NSPredicate来做到这一点

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
    if (searchText.length == 0) {
        isFiltered = NO;
    }
    else {
        isFiltered = YES;

        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"FolderName LIKE [cd] %@",searchText];
        searchData = [[parsedData filteredArrayUsingPredicate:predicate]mutableCopy];
    }

    [listingSet reloadData];
}