(Android™) Check PayPal Access Token Expiration

Checks to see if the PayPal access token expired.

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);

    // Note: Requires Chilkat v9.5.0.64 or greater.

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

    // In the example linked here: PayPal OAuth2 Token,
    // we fetched a PayPal access token and saved it to a JSON file.
    // We also recorded the current date/time.
    // Load this JSON file and compare the current date/time with the fetch date/time
    // and the "expires_in" value to see if the token is expired.

    CkJsonObject json = new CkJsonObject();
    boolean success = json.LoadFile("qa_data/tokens/paypal.json");
    if (success != true) {
        Log.i(TAG, "Failed to load access key json file.");
        return;
        }

    // Get the current date/time.
    CkDateTime dateTime = new CkDateTime();
    boolean bLocalTime = false;
    int dtNow = dateTime.GetAsUnixTime(bLocalTime);

    // Get the access token create date/time
    int dtCreate = json.IntOf("tokenCreateTimeUtc");

    // Find out how many seconds have elapsed.
    int numSeconds = dtNow - dtCreate;

    // Get the expires_in value from the JSON.
    int expires_in = json.IntOf("expires_in");

    Log.i(TAG, "token age (in seconds) = " + String.valueOf(numSeconds));
    Log.i(TAG, "expires_in = " + String.valueOf(expires_in));

    // If the token expired, or if it will expire in 5 minutes or less,
    // get another token.
    if (numSeconds < (expires_in - 300)) {
        Log.i(TAG, "The token is not yet expired.  No need to fetch another.");
        return;
        }

    Log.i(TAG, "Time to fetch a new access token...");

    // Get another token..
    // See the example at Get PayPal OAuth2 Token
    // to get another 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."
  }
}