(Android™) ETrade OAuth1 Authorization (3-legged) Step 2

Demonstrates the final step in 3-legged OAuth1 authorization for the ETrade REST API. Example uses the OAuth1 verifier code that was copy-and-pasted from the browser in the 1st step. The end result of this final OAuth1 step is an access token that can be used to make ETrade REST API calls.

See https://apisb.etrade.com/docs/api/authorization/get_access_token.html

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);

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

    String consumerKey = "ETRADE_CONSUMER_KEY";
    String consumerSecret = "ETRADE_CONSUMER_SECRET";

    String requestTokenUrl = "https://apisb.etrade.com/oauth/request_token";
    String authorizeUrl = "https://us.etrade.com/e/t/etws/authorize";
    String accessTokenUrl = "https://apisb.etrade.com/oauth/access_token";

    CkHttp http = new CkHttp();
    boolean success = true;

    http.put_OAuth1(true);
    http.put_OAuthConsumerKey(consumerKey);
    http.put_OAuthConsumerSecret(consumerSecret);
    http.put_OAuthCallback("oob");

    CkJsonObject jsonRequestToken = new CkJsonObject();
    success = jsonRequestToken.LoadFile("qa_data/tokens/etrade_request_token.json");
    String requestToken = jsonRequestToken.stringOf("oauth_token");
    String requestTokenSecret = jsonRequestToken.stringOf("oauth_token_secret");

    // ------------------------------------------------------------------------------
    // Exchange the OAuth Request Token for an OAuth Access Token.

    http.put_OAuthToken(requestToken);
    http.put_OAuthTokenSecret(requestTokenSecret);

    // This is the verifier that was interactively copy-and-pasted from the browser back to our app.
    http.put_OAuthVerifier("NJ07S");

    CkHttpResponse resp = http.QuickGetObj(accessTokenUrl);
    if (http.get_LastMethodSuccess() != true) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    // Make sure a successful response was received.
    if (resp.get_StatusCode() != 200) {
        Log.i(TAG, resp.statusLine());
        Log.i(TAG, resp.header());
        Log.i(TAG, resp.bodyStr());
        return;
        }

    // If successful, the resp.BodyStr contains something like this:
    // oauth_token=85123455-fF41296Bi3daM8eCo9Y5vZabcdxXpRv864plYPOjr&oauth_token_secret=afiYJOgabcdSfGae7BDvJVVTwys8fUGpra5guZxbmFBZo
    Log.i(TAG, resp.bodyStr());

    CkHashtable hashTab = new CkHashtable();
    hashTab.AddQueryParams(resp.bodyStr());

    String accessToken = hashTab.lookupStr("oauth_token");
    String accessTokenSecret = hashTab.lookupStr("oauth_token_secret");

    // The access token + secret is what should be saved and used for
    // subsequent REST API calls.
    Log.i(TAG, "Access Token = " + accessToken);
    Log.i(TAG, "Access Token Secret = " + accessTokenSecret);

    // Save this access token for future calls.
    // Just in case we need user_id and screen_name, save those also..
    CkJsonObject json = new CkJsonObject();
    json.AppendString("oauth_token",accessToken);
    json.AppendString("oauth_token_secret",accessTokenSecret);

    CkFileAccess fac = new CkFileAccess();
    fac.WriteEntireTextFile("qa_data/tokens/etrade.json",json.emit(),"utf-8",false);

    Log.i(TAG, "Success.");

  }

  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."
  }
}