(Android™) Twitter - Application Only Authentication

Demonstrates how to get a Twitter OAuth2 token for application-only authentication.

This example is deprecated and no longer valid.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // It requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Note: Define your Twitter apps at https://apps.twitter.com/

    // We're going to send an HTTPS POST that looks like this:

    // POST /oauth2/token HTTP/1.1
    // Host: api.twitter.com
    // User-Agent: My Twitter App v1.0.23
    // Authorization: Basic eHZ6MWV2RlM0d0VFUFRHRUZQSEJvZzpMOHFxOVBaeVJn
    //                      NmllS0dFS2hab2xHQzB2SldMdzhpRUo4OERSZHlPZw==
    // Content-Type: application/x-www-form-urlencoded;charset=UTF-8
    // Content-Length: 29
    // Accept-Encoding: gzip
    // 
    // grant_type=client_credentials

    // Update these values with your consumer key and secret (also known as API key and API secret).
    String consumerKey = "TWITTER_CONSUMER_KEY";
    String consumerSecret = "TWITTER_CONSUMER_SECRET";

    CkHttp http = new CkHttp();

    http.put_BasicAuth(true);
    http.put_Login(consumerKey);
    http.put_Password(consumerSecret);

    CkHttpRequest req = new CkHttpRequest();
    req.AddParam("grant_type","client_credentials");

    CkHttpResponse resp = http.PostUrlEncoded("https://api.twitter.com/oauth2/token",req);
    if (http.get_LastMethodSuccess() != true) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    Log.i(TAG, "Response Status Code: " + String.valueOf(resp.get_StatusCode()));

    if (resp.get_StatusCode() != 200) {
        Log.i(TAG, "Expected a 200 response status code for success.");
        Log.i(TAG, resp.bodyStr());
        return;
        }

    // We should get a JSON response like this:

    // {
    //     "token_type":"bearer",
    //     "access_token":"..."
    // }

    CkJsonObject json = new CkJsonObject();
    json.Load(resp.bodyStr());

    Log.i(TAG, "Access token = " + json.stringOf("access_token"));


  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}