(Android™) GeoOp Exchange Refresh Token for New Access Token

Demonstrates how to use the /oauth2/token endpoint to exchange it for a new access token once the current access token has expired.

Note: This example requires Chilkat v9.5.0.65 or greater.

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

    // This example also assumes that OAuth2 access and refresh tokens were previously fetched.
    // and saved in a JSON file.  

    // First get our previously obtained refresh token.
    // { .... "refresh_token":"e6dqdG....mzjpT04w==", .... }
    CkJsonObject jsonToken = new CkJsonObject();
    boolean success = jsonToken.LoadFile("qa_data/tokens/geoop.json");

    CkRest rest = new CkRest();

    // Connect to GeoOp...
    boolean bAutoReconnect = true;
    success = rest.Connect("login.geoop.com",443,true,bAutoReconnect);
    if (success != true) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    // Set the X-Version header.
    rest.AddHeader("X-Version","1.0");

    // Provide the required form params to get the new access token
    Log.i(TAG, "refresh_token = " + jsonToken.stringOf("refresh_token"));
    rest.AddQueryParam("refresh_token",jsonToken.stringOf("refresh_token"));
    rest.AddQueryParam("grant_type","refresh_token");
    rest.AddQueryParam("client_id","GEOOP-CLIENT-ID");
    rest.AddQueryParam("client_secret","GEOOP-CLIENT-SECRET");

    String responseBody = rest.fullRequestFormUrlEncoded("POST","/oauth2/token");
    if (rest.get_LastMethodSuccess() != true) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    // If the response status code did not indicate success, then see what happened..
    if (rest.get_ResponseStatusCode() != 200) {
        Log.i(TAG, "Request Header: ");
        Log.i(TAG, rest.lastRequestHeader());
        Log.i(TAG, "----");
        Log.i(TAG, "Response StatusCode = " + String.valueOf(rest.get_ResponseStatusCode()));
        Log.i(TAG, "Response StatusLine: " + rest.responseStatusText());
        Log.i(TAG, "Response Header:");
        Log.i(TAG, rest.responseHeader());
        Log.i(TAG, responseBody);
        return;
        }

    CkJsonObject json = new CkJsonObject();
    json.put_EmitCompact(false);
    json.Load(responseBody);

    // Show the full JSON response.  It should contain the new access token...
    Log.i(TAG, json.emit());

  }

  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."
  }
}