ios – 如何搜索字典数组并在UITableview中显示？

2023年7月12日 347次阅读

我在
IOS中很新,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键“pname”进行搜索？我的应用程序崩溃了

filteredArrayUsingPredicate:

最佳答案 您需要修改谓词以添加要查找的键：

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

另外==将实际寻找完全匹配,即如果您将进入Band Camp T-Shirt作为搜索,那么您将得到结果,如果您只是进入乐队或营地或衬衫,您将无法获得任何结果.因此,为了实现基于字符的搜索,您需要修改谓词以包含contains关键字.

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

[cd]将匹配不区分大小写.

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