使用nsarray的所有值過濾NSMutableArray

Question

我有這樣的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;
                }
            );}
        )

而且我正在過濾包含有Cuisine_name多個值的Restaurants Array。例如，如果我有一個，

像這樣的Nsarray cuisine_name（印度，斯里蘭卡，中國）

我想根據cusine_name的每個對象過濾我的Restaurants數組。

目前我正在這樣做。

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

但是它使用描述...進行過濾...對於包含整個三個值（印度，斯里蘭卡，中文）的“餐廳數組”，但是我想使用Cuisine_name的每個對象進行過濾。 任何幫助將不勝感激..

Answer 1

請使用這個

  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);

輸出：

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;
    }
)