我建议为 Restaurant 类实现一个init方法。

I would suggest to implement an init method for your Restaurant class.

-(instancetype) initWithParameters:(NSDictionary*)parameters
{
    self = [super init];
    if (self) {
        //initializations
        _validationCode = parameters[@"validationCode"]; // may be NSNull
        _firstName = [parameters[@"FirstName"] isKindOfClass:[NSNull class]] ? @"" 
                     : parameters[@"FirstName"];
        ...
    }
    return self;
}

注意：你可能有JSON Null的事实，使你的初始化有点阐述。当相应的JSON值为Null时，您需要决定如何初始化属性。

Note: the fact that you may have JSON Nulls, makes your initialization a bit elaborate. You need to decide how you want to initialize a property, when the corresponding JSON value is Null.

您的参数 dictionary将是来自服务器的JSON数组的第一级字典。

Your parameters dictionary will be the first level dictionary from the JSON Array which you got from the server.

首先，创建一个JSON表示，即JSON中的NSArray对象： / p>

First, create a JSON representation, that is a NSArray object from the JSON:

NSError* localError;
id restaurantsObjects = [NSJSONSerialization JSONObjectWithData:data 
                                                        options:0 
                                                          error:&localError];

IFF这没有失败，你的 restaurantsObjects 现在应该是 NSArray 对象，其中包含餐馆 NSDictionary s。

IFF this did not fail, your restaurantsObjects should now be an NSArray object containing the restaurants as NSDictionarys.

现在，可以直接创建一个 NSMutableArray ，它将填充 Restaurant 对象：

Now, it will be straight forward to create a NSMutableArray which will be populated with Restaurant objects:

NSMutableArray* restaurants = [[NSMutableArray alloc] init];
for (NSDictionary* restaurantParameters in restaurantsObjects) {
    Restaurant* restaurant = [Restaurant alloc] initWithParameters: restaurantParameters];
    [restaurants addObject:restaurant];
}

最后，您可以设置一个属性餐馆在某些控制器中：

and finally, you may set a property restaurants in some controller:

self.restaurants = [restaurants copy];