ios - 如何搜索字典数组并在 UITableview 中显示？

Question

我是 IOS 的新手，我正在使用 UISearchDisplayController 进行搜索。

-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
    [self filterContentForSearchText:searchString
                               scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                      objectAtIndex:[self.searchDisplayController.searchBar
                                                     selectedScopeButtonIndex]]];

    return YES;
}

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"ANY SELF == %@", searchText];
    NSArray *filtered = [self.arrProductList filteredArrayUsingPredicate:predicate];
    NSLog(@"%@", filtered);
}

这是我的 self.arrProductList 是一个数组，即

    ({        ID = 1;        description = "Coalesce Functioning on impatience T-Shirt";        pname = "Coalesce Functioning T-Shirt";        price = "299.00";        qty = 99;       },    {        ID = 2;        description = "Eater Krylon Bombear Destroyed T-Shirt";        pname = "Girl's T-Shirt";        price = "499.00";        qty = 99;    },    {        ID = 3;        description = "The Get-up Kids Band Camp Pullover Hoodie";        pname = "Band Camp T-Shirt";        price = "399.00";        qty = 99;    })  

我的问题是如何使用关键字“pname”进行搜索？我的应用程序在

中崩溃

filteredArrayUsingPredicate:

Answer 1

您需要修改谓词以添加要查找的键:

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"pname == %@", searchText];

此外，== 实际上会查找完全匹配项，即如果您输入 Band Camp T-Shirt 作为搜索，那么您将获得结果，您赢了如果您只是输入Band 或Camp 或Shirt，将无法得到任何结果。因此，为了实现基于字符的搜索，您需要修改谓词以包含contain关键字。

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"pname contains[cd] %@", searchText];

[cd] 将不区分大小写匹配。