使用 nsarray 的所有值过滤 NSMutableArray

Question

我有这样的 MutableArray...

    restaurants = ({
    cuisines =   ({
                    "cuisine_id" = 1;
                    "cuisine_name" = Indian;
                },
                {
                    "cuisine_id" = 2;
                    "cuisine_name" = SriLanka;
                }
            );}

            { cuisines = ({
                    "cuisine_id" = 1;
                    "cuisine_name" = Chinese;
                },
                {
                    "cuisine_id" = 2;
                    "cuisine_name" = Afghani;
                }
            );}

           {cuisines =({
                    "cuisine_id" = 1;
                    "cuisine_name" = Chinese;
                },
                {
                    "cuisine_id" = 2;
                    "cuisine_name" = Afghani;
                }
            );}
        )

我正在用 cuisine_name 的多个值过滤餐厅数组例如，如果我有一个，

像这样的 Nsarray cuisine_name ( 印度, 斯里兰卡，中国人， )

我想根据 cusine_name 的每个对象过滤我的 Restaurants 数组。

目前我是这样做的..

        NSPredicate *predicateCuisines = [NSPredicate   predicateWithFormat:@"(cuisines.cuisine_name = %@)",[cuisineTypes      valueForKey:@"cuisine_name"]];
    [self.arrRestaurantList filterUsingPredicate:predicateCuisines];

但是它过滤使用描述...对于包含整个三个值（印度、斯里兰卡、中国）的餐厅数组，但我想用 cuisine_name 的每个对象进行过滤。任何帮助将不胜感激..

Answer 1

请使用这个

  NSArray* arrtu4 = @[@{@"cuisines" : @[@{@"cuisine_id" : @1,@"cuisine_name" : @"Indian"},@{ @"cuisine_id" : @2, @"cuisine_name" : @"SriLanka"}]},@{ @"cuisines" : @[@{@"cuisine_id" : @1,@"cuisine_name" : @"Chinese"},@{@"cuisine_id" : @2,@"cuisine_name" : @"Afghani"}]},@{@"cuisines" :@[@{@"cuisine_id" :@1,@"cuisine_name" : @"Chinese"},@{ @"cuisine_id" : @2,@"cuisine_name" : @"Afghani"}]}];
    NSMutableArray *arrryfilted = [NSMutableArray array];

    NSArray *arrayCountrys = @[@"Chinese",@"SriLanka",@"Indian"];

for (int i = 0; i<arrtu4.count; i++)
{

    NSArray *filterArray2 = [[arrtu4 objectAtIndex:i]valueForKey:@"cuisines"];

    NSArray *filterArray3 = [filterArray2 filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(id  _Nonnull evaluatedObject, NSDictionary<NSString *,id> * _Nullable bindings) {
        return [arrayCountrys containsObject:[evaluatedObject valueForKey:@"cuisine_name"]]  ;

                }]];




     [arrryfilted addObjectsFromArray:filterArray3 ];



}

NSLog(@"%@",arrryfilted);

输出：

2016-08-20 16:44:59.856 coredataReltaion[6762:152672] (
        {
        "cuisine_id" = 1;
        "cuisine_name" = Indian;
    },
        {
        "cuisine_id" = 2;
        "cuisine_name" = SriLanka;
    },
        {
        "cuisine_id" = 1;
        "cuisine_name" = Chinese;
    },
        {
        "cuisine_id" = 1;
        "cuisine_name" = Chinese;
    }
)

使用 nsarray 的所有值过滤 NSMutableArray

Filter NSMutableArray with All the values of nsarray

objective-c

nsmutablearray

ios