Android™

Refresh a Frame.io OAuth2 Access Token

See more Frame.io Examples

Refreshes a Frame.io OAuth2 access token. When an access token expires, HTTPS requests will receive a 401 status response indicating failure. When that happens, your application can run this code to refresh the access token, and then retry the request using the new access token. Refreshing an access token does not need user interaction (i.e. does not need to display a browser to have the user interactive authorize access).

Note: This example requires Chilkat v9.5.0.84 or greater.

Android™

// 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);

    boolean success = false;

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

    // IMPORTANT: This example requires Chilkat v9.5.0.84 or greater because of an internal modification required to support frame.io
    // IMPORTANT: This example requires Chilkat v9.5.0.84 or greater because of an internal modification required to support frame.io
    // IMPORTANT: This example requires Chilkat v9.5.0.84 or greater because of an internal modification required to support frame.io

    // It is assumed we previously obtained an OAuth2 access token.
    // This example loads the JSON access token file 
    // saved by this example: Get Frame.io OAuth2 Access Token

    CkJsonObject jsonToken = new CkJsonObject();
    success = jsonToken.LoadFile("qa_data/tokens/frame_io.json");
    if (success != true) {
        Log.i(TAG, "Failed to load APP.json");
        return;
        }

    // The access token JSON looks like this:

    // {
    //   "access_token": "kwenK_QQnQipMZGtlGreCwrjUxMBr4OX-XAEVA0Q3Rg.yFqYY_c-Mw_k59X1e9rTYR5m-EWf9ivWc1kqmsxR2v4",
    //   "expires_in": 3600,
    //   "refresh_token": "ZI7XDR0lWoKAXYxPs8BW7bU2IJg3za0zlimMfvTEhUg.pffnx7xye30Eps6OZEYcdzrINFSM3fM5zi78ln7QQ3o",
    //   "scope": "offline asset.create asset.read asset.update asset.delete",
    //   "token_type": "bearer"
    // }

    CkOAuth2 oauth2 = new CkOAuth2();

    oauth2.put_TokenEndpoint("https://applications.frame.io/oauth2/token");

    // Replace these with actual values.
    oauth2.put_ClientId("CLIENT_ID");
    oauth2.put_ClientSecret("CLIENT_SECRET");

    // Frame.io sends the client ID and secret using HTTP basic authentication.
    oauth2.put_UseBasicAuth(true);

    // Get the "refresh_token"
    oauth2.put_RefreshToken(jsonToken.stringOf("refresh_token"));

    // Send the HTTP POST to refresh the access token..
    success = oauth2.RefreshAccessToken();
    if (success != true) {
        Log.i(TAG, oauth2.lastErrorText());
        return;
        }

    Log.i(TAG, "New access token: " + oauth2.accessToken());
    Log.i(TAG, "New refresh token: " + oauth2.refreshToken());

    // Update the JSON with the new tokens.
    jsonToken.UpdateString("access_token",oauth2.accessToken());
    jsonToken.UpdateString("refresh_token",oauth2.refreshToken());

    // Save the new JSON access token response to a file.
    CkStringBuilder sbJson = new CkStringBuilder();
    jsonToken.put_EmitCompact(false);
    jsonToken.EmitSb(sbJson);
    sbJson.WriteFile("qa_data/tokens/frame_io.json","utf-8",false);

    Log.i(TAG, "OAuth2 token refreshed!");
    Log.i(TAG, "New Access Token = " + oauth2.accessToken());

  }

  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."
  }
}