With the 2.2.7-4 release, we introduced a new way to display the challenge screen which will help avoid app crashes due to Android System killing the app while it is in background.

The new, overloaded ‘cca_continue()’ method takes in the following parameters:

• String: transactionId
• String: payload
• CardinalChallengeObserver: challengeObserver
  • This is a new class that the App will have to instantiate in their onCreate() method and pass on the new cca_continue method.
  • The CardinalChallengeObserver takes in two parameters:
    • FragmentActivity
    • CardinalValidateReceiver: this was previously passed in the old cca_continue method directly. 

All the functionality of the older version of cca_continue() will function as before, but moving to this new method is recommended in order to help avoid the scenario where your app may be killed while in the background and the SDK then being unable to return control back to the app.

  // This version of cca_continue is available in Cardinal SDK 2.2.7-4 for Android

  public void cca_continue(String transactionId, String payload, CardinalChallengeObserver challengeObserver) throws InvalidInputException {
    ccaProcessor.cca_continue(transactionId, payload, challengeObserver);
}

// The new CardinalChallengeObserver class is required in using the new version of cca_continue shown above

 
public CardinalChallengeObserver(@NonNull FragmentActivity activity, @NonNull CardinalValidateReceiver cardinalValidateReceiver) throws InvalidInputException {
    super(activity, cardinalValidateReceiver);
}


// Put together, it would look something like this:

CardinalChallengeObserver challengeObserver;
challengeObserver = new CardinalChallengeObserver(this, new CardinalValidateReceiver() {
    @Override
    public void onValidated(Context context, ValidateResponse validateResponse, String s) {
        //your code here to handle onValidate result
    }
});

 /**
  * Cca continue
  *
  * @param transactionId     the transaction id
  * @param payload           the payload
  * @param currentActivity   the current activity
  * @throws InvalidInputException        the invalid input exception
  * @throws JSONException                the json exception
  * @throws UnsupportedEncodingException the unsupported encoding exception
  */
 try {
     cardinal.cca_continue("[TRANSACTION ID ]", "[PAYLOAD]", this, new CardinalValidateReceiver() {
            /**
             * This method is triggered when the transaction has been terminated. This is how SDK hands back
             * control to the merchant's application. This method will
             * include data on how the transaction attempt ended and
             * you should have your logic for reviewing the results of
             * the transaction and making decisions regarding next steps.
             * JWT will be empty if validate was not successful.
             *
             * @param validateResponse
             * @param serverJWT
             */
            @Override
            public void onValidated(Context currentContext, ValidateResponse validateResponse, String serverJWT) {

            }
        });
  }
 catch (Exception e) {
    // Handle exception
  }

 /**
  * Cca continue.
  *
  * @param transactionId     the transaction id
  * @param payload           the payload
  * @param currentActivity   the current activity
  * @throws InvalidInputException        the invalid input exception
  * @throws JSONException                the json exception
  * @throws UnsupportedEncodingException the unsupported encoding exception
  */
 try {
     cardinal.cca_continue("[TRANSACTION ID ]", "[PAYLOAD]", this, object: CardinalValidateReceiver {
            /**
             * This method is triggered when the transaction has been terminated.This is how SDK hands back
             * control to the merchant's application. This method will
             * include data on how the transaction attempt ended and
             * you should have your logic for reviewing the results of
             * the transaction and making decisions regarding next steps.
             * JWT will be empty if validate was not successful.
             *
             * @param validateResponse
             * @param serverJWT
             */
            override fun onValidated(currentContext: Context?, validateResponse: ValidateResponse, serverJWT: String?) {

            }
        });
  }
 catch (e: Exception) {
    // Handle exception
  }