如何从API（C＃Xamarin Studio）保存来自字符串的accessstoken

Question

I just started learning programming and I am currently trying out developing an android mobile application. I have watched a lot of tutorials and trying to find solutions online, but i can't seem to get a hang of it. So i am now reaching out to you guys for some help.

I am working in Xamarin Studio, C#, and I am trying to create a loginsystem with the help of a REST API, and i am not really sure how i save the accesstoken to a string so that i can use it in further requests.

FILE: MainActivity.cs

---

namespace APItest

{

[Activity(Label = "APItest", MainLauncher = true)]

public class MainActivity : Activity

{

private WebClient mClient;

private Uri mUrl;

private List<string> mItems;

private ListView mListView;


 ` public string acesstoken;`
 ` protected override void OnCreate(Bundle savedInstanceState)` 
` {`
 ` base.OnCreate(savedInstanceState);` 


SetContentView(Resource.Layout.Main);
mListView = FindViewById<ListView>(Resource.Id.myListView);


 ` mClient = new WebClient();`
 ` mUrl = new Uri("http://...link.../login");`
 ` mClient.DownloadDataAsync(mUrl);` 


mClient.Headers.Add("User", ”email@gmail.com");

mClient.Headers.Add("Pass", ”myPassword”;

mClient.Headers.Add("Content-Type", "application/json");

mClient.Headers.Add("Accept", "application/json");

 
accesstoken = mClient.Headers.Get(”Accesstoken").ToString();


 ` mItems = new List<string>();`
 ` mItems.Add(accesstoken);` 


           ArrayAdapter adapter = new ArrayAdapter(this, Android.Resource.Layout.SimpleListItem1, mItems);

``


mListView.Adapter = adapter;



 }


}


`}

---

In Postman API tool (I send username and password in headers and receive following text)

{
"Result": {
”mRegister": {
"allowed": 0,
”Testmsg": "**"
},
 ` …` 
"token": ”EB9TEBINlVOASM0Ok04RlIjI8JGMVNVV1smFu5MT"
}
}

---

I know i have a lot to learn, but i would really appreciate your help so i can get started.

Thank you in advance!

Answer 1

你有没有尝试过：

accesstoken = mClient.Headers.Get("token").ToString();

Answer 2

Getting token form json string.

Using Newtonsoft.Json library, create your response Json object. And get the token string.

Following example show how to create a User json object to get the username and password:

using Newtonsoft.Json;

public class MainActivity : Activity
{
    protected override async void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);
        BlobCache.ApplicationName = "AkavacheText";
        string json = @"{ 'Username': 'Mike','Password': 'Ma'}"; 
        SetContentView(Resource.Layout.Main);
        var getData = JsonConvert.DeserializeObject<User>(json);
        System.Console.WriteLine(getData.Username+"---"+ getData.Password);
    }
 }

public class User
{
  public  string Username { get; set; }
  public string   Password { get; set; }
}

string json should be your response string. User object should be your response object that structure depends on your json format.