(Android™) Firebase PATCH - Updating Data

Uses the PATCH method to update record with new information. The data used in this example is at Chilkat Firebase Pigs Database, and is shown here:

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);

    // Uses the PATCH method to update a Firebase record.

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

    // This example assumes a JWT authentication token, if required, has been previously obtained.
    // See Get Firebase Access Token from JSON Service Account Private Key for sample code.

    // Load the previously obtained Firebase access token into a string.
    CkFileAccess fac = new CkFileAccess();
    String accessToken = fac.readEntireTextFile("qa_data/tokens/firebaseToken.txt","utf-8");
    if (fac.get_LastMethodSuccess() != true) {
        Log.i(TAG, fac.lastErrorText());
        return;
        }

    CkRest rest = new CkRest();

    // Make the initial connection (without sending a request yet).
    // Once connected, any number of requests may be sent.  It is not necessary to explicitly
    // call Connect before each request.  
    boolean success = rest.Connect("chilkat.firebaseio.com",443,true,true);
    if (success != true) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    CkAuthGoogle authGoogle = new CkAuthGoogle();
    authGoogle.put_AccessToken(accessToken);
    rest.SetAuthGoogle(authGoogle);

    // Chilkat's sample data (pig-rescue data) is publicly readable at: https://chilkat.firebaseio.com/.json
    // This data is publicly readable, but not writable.  You'll need to 
    // run against your own database..

    // We're going to update "Molly II" to "Molly III"
    CkJsonObject pigNameUpdate = new CkJsonObject();
    pigNameUpdate.AppendString("name","Molly III");

    // The string content of the last arg passed is  {"name":"Molly III"} 
    String jsonResponse = rest.fullRequestString("PATCH","/pig-rescue/animal/-KI3bD-FU_Dake7sYOiP.json",pigNameUpdate.emit());
    if (rest.get_LastMethodSuccess() != true) {
        // Something happened in the communications (either no request was sent, or no response was received.
        // (The Chilkat REST API also has lower-level methods where an app can send the request in one call,
        // and then receive the response in another call.)
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    // Check the response status code.   A 200 response status indicates success.
    if (rest.get_ResponseStatusCode() != 200) {
        Log.i(TAG, rest.responseStatusText());
        Log.i(TAG, jsonResponse);
        Log.i(TAG, "Failed.");
        return;
        }

    // When successful, the response contains the data written.
    Log.i(TAG, jsonResponse);
    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."
  }
}