iphone - 如何在 IOS 中从 NSDictionary 获取图像数组

Question

我想获取所有具有配方 ID 的图像数组，并想将此图像数组传递给下一个 viewController 但我的问题是我只获取一个图像，我使用 recipeDC 作为实体类，因为所有图像的数组应该我使用另一个实体类或者也可以通过使用相同的类来完成，我该怎么办，我卡住了请帮助我，

-(NSMutableArray *)getAllRecipiesByUserId:(RecipeDC *)recipeid
{
    NSMutableArray *dataArray = [[NSMutableArray alloc] init];

     NSString *url = [NSString stringWithFormat:@"%@get_all_recipies_by_user_id&user_id=%d",kWSURL,recipeid.user_id];


    NSDictionary * returnDict = (NSDictionary *) [self callWebService:url];
    if([returnDict objectForKey:@"response"])
    {
        NSDictionary * returnDictSuccess = (NSDictionary *) [returnDict objectForKey:@"response"];
        NSArray *returnedDealArray = [returnDictSuccess objectForKey:@"recipies"];

        RecipeDC *recpie = [[RecipeDC alloc] init];
        for(NSDictionary *dealDict in returnedDealArray)
        {

            recpie.recipe_id=[[dealDict objectForKey:@"recipe_id"]intValue ];
            recpie.category_id=[[dealDict objectForKey:@"category_id"]intValue ];
            recpie.user_id=[[dealDict objectForKey:@"user_id"]intValue ];
            recpie.recipe_name = [dealDict objectForKey:@"recipe_name" ];
            recpie.recipe_detail = [dealDict objectForKey:@"recipe_detail"];


            NSArray *img = [dealDict objectForKey:@"images"];

           for(NSDictionary *dealDict in img)
            {
               recpie.recipie_img_id=[[dealDict objectForKey:@"recipe_images_id"]intValue];
                recpie.recipe_id=[[dealDict objectForKey:@"recipe_id"]intValue];
                recpie.recipie_img_url=[dealDict objectForKey:@"image_url"];

           }
            [dataArray addObject:recpie];
        NSLog(@"arr count is %u",[dataArray count]);

        }
    }
    return dataArray;

}

Answer 1

你已经完成了

RecipeDC *recpie = [[RecipeDC alloc] init];
    for(NSDictionary *dealDict in returnedDealArray)
    {

应该是

    for(NSDictionary *dealDict in returnedDealArray)
    {
       RecipeDC *recpie = [[RecipeDC alloc] init];

在循环中..

已编辑要获取图像数组，您可以保存正在执行的整个数组字典

NSArray *img = [dealDict objectForKey:@"images"];

       for(NSDictionary *dealDict in img)
        {
           recpie.recipie_img_id=[[dealDict objectForKey:@"recipe_images_id"]intValue];
            recpie.recipe_id=[[dealDict objectForKey:@"recipe_id"]intValue];
            recpie.recipie_img_url=[dealDict objectForKey:@"image_url"];

       }

相反，在 RecipeDC 类中声明一个属性为 NSArray *images；只需执行以下操作

recpie.images=[dealDict objectForKey:@"images"];