Xamarin PCL C＃ - 将字符串反序列化为JSONObject / JSONArray

Question

I've worked a lot with Android but today I have to work with Xamarin. I'm making a PCL class and I'm trying to create a JSON object from a string ( HttpWebResponse converted into a string) for calling from an Android wrapper.

After some research I wasn't able to find anything which really answers my question.

Ultimately I want be able to just call something like this:

string value = jsonObject.get("key").getAsString();

I get a string from http response and then I want to convert it into a JSON object. When the JSON object is created, I want to extract a value like in the example. However, I'm making it in a PCL, so is it possible to do this in Xamarin/C# from a PCL?

Thank for the help and reading!

Answer 1

You can deserialize the string into an object using Newtonsoft.Json library:

Account account = JsonConvert.DeserializeObject<Account>(jsonFromServer);

You can also use HttpClient class instead of HttpWebRequest and automatically deserialize response into your object:

var client = new HttpClient();
var response = await client.GetAsync("/accounts");

Account account = await response.Content.ReadAsAsync<Account>();

If you server returns different StatusCode when error happens you can use HttpResponseMessage.IsSuccessStatusCode to decide which type to deserialize the response into. If not you can use var jsonObject = JObject.Parse(jsonText); and access the properties like this: jsonObject["someKey"]

You'll need Microsoft.AspNet.WebApi.Client library from Nuget