如何快速从具有dicitionary的数组中获取值? [英] How to get the values from array with dicitionary in swift?

问题描述

我想将下面的json放到我的数组中，以显示在UITableview

I want get the below json to my array for showing in UITableview

{
MyPets =     (
            {
        breed = "";
        breedvaccinationrecord = "";
        "city_registration" = "";
        "date_of_birth" = "";
        "emergency_contacts" = "";
        gender = m;
        "pet_id" = 475;
        "pet_name" = "IOS PET";
        petinfo = "http://name/pet_images/";
        "prop_name" = "";
        "qr_tag" = 90909090;
        species = Canine;
        "vaccination_records" = "";
        vaccinationrecord = "http://Name/vaccination_records/";
        "vet_info" = "";
    }
);
}

我正在使用下面的代码将值放入数组

i am using below code to get values into array

if let dict = response.result.value {

            print(response)

                let petListArray = dict as! NSDictionary
            self.petListArray = petListArray["MyPets"] as! [NSMutableArray]}

在cellForRowAtIndexPath中，我正在使用此行在TableCell的UILabel中显示名称

in cellForRowAtIndexPath i am using this line to display name in UILabel in TableCell

cell?.petName.text = self.petListArray[indexPath.row].valueForKey("pet_name") as? String

但它像

fatal error: NSArray element failed to match the Swift Array Element type

我是Swift 2的新手，请提前帮助我

i am new to swift 2 please help me thanks in advance

推荐答案

首先将petListArray声明为Swift Array，请勿在Swift 中使用NSMutable...集合类型.完全.

First of all declare petListArray as Swift Array, do not use NSMutable... collection types in Swift at all.

通过命名...ListArray的方式，我建议petList或petArray或只是pets:

By the way the naming ...ListArray is redundant, I recommend either petList or petArray or simply pets:

var pets = [[String:Any]]()

根对象是一个字典，键MyPets的值是一个数组，因此强制转换

The root object is a dictionary and the value for key MyPets is an array, so cast

if let result = response.result.value as? [String:Any],
   let myPets = result["MyPets"] as? [[String:Any]] {
      self.pets = myPets
}

在cellForRow中写

let pet = self.pets[indexPath.row]
cell?.petName.text = pet["pet_name"] as? String

强烈建议使用自定义类或结构作为模型.这样就避免了很多类型转换.

It's highly recomenended to use a custom class or struct as model. That avoids a lot of type casting.

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