Frank van Puffelen puf

## Listen for authentication state.java
// In Firebase it is often better to *react* to authentication state
// changes, instead getting the current authentication state everywhere.
// To respond to auth state changes, use an auth state change listener
// like this:
FirebaseAuth auth = FirebaseAuth.getInstance();
auth.addAuthStateListener(new FirebaseAuth.AuthStateListener() {
    @Override
    public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
        if (firebaseAuth.getCurrentUser() == null) {
            Log.i("firebase", "AuthState changed to null");

## Detect write errors in Firebase Realtime Database in Android.java
// To detect when a write operation is rejected by your Realtime Database
// security rules, add a completion listener to the `setValue()` call and
// throw the exception if the task failed.
val ref = FirebaseDatabase.getInstance().getReference()
ref.push()
    .setValue(ServerValue.TIMESTAMP)
    .addOnCompleteListener(new CompletionListener() {
      @Override
      public void onComplete(Task<Void> task) {
        Log.i("firebase", String.valueOf(task.isSuccessful()))

## README.md

      
              3 files
            
          
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              25 comments
            
          
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                puf
                / README.md
            
            
              Last active
              March 28, 2023 16:37
            
              
                Firebase Hosting Deploy Single File
              
          
    This script may no longer work. Have a look at its (more official) replacement: https://github.com/firebase/firebase-tools/tree/master/scripts/examples/hosting/update-single-file

Firebase Hosting Deploy Single File

This utility script deploy a single local file to an existing Firebase Hosting site.
Other files that are already deployed are left unmodified.
The difference with firebase deploy is that this script does not require you to have a local snapshot of all hosted files,
you just need the one file that you want to add/update.

  
## index.html
<html>
<head>
<script src="https://www.gstatic.com/firebasejs/3.0.0/firebase.js"></script>
<title>ZeroToApp</title>
<style>
  #messages { width: 40em; border: 1px solid grey; min-height: 20em; }
  #messages img { max-width: 240px; max-height: 160px; display: block; }
  #header { position: fixed; top: 0; background-color: white; }
  .push { margin-bottom: 2em; }
  @keyframes yellow-fade { 0% {background: #f2f2b8;} 100% {background: none;} }

## ChatMessage.java
package com.google.firebase.zerotoapp;

public class ChatMessage {
    public String name;
    public String message;

    public ChatMessage() {
    }

    public ChatMessage(String name, String message) {

## WaitForInitialValue.java
public class Main {
    static ValueEventListener mListener;

    public static void main(String[] args) throws Exception {
        Firebase ref = new Firebase("https://<your-app>.firebaseio.com/");
        mListener = ref.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot snapshot) {
                if (snapshot.exists()) {
                    System.out.println("The value is now "+snapshot.getValue());

## acknowledge.js
var ref = new Firebase('https://yours.firebaseio.com/acknowledge');
var users = [];

function $(selector) {
  var result = document.querySelectorAll(selector);
  return (result.length > 1) ? Array.prototype.slice.call(result) : result[0];
}

function handleAuthResult(error, authData) {
  if (error) {

## index.android.js
'use strict';

var React = require('react-native');
var Firebase = require('firebase');
var ReactFireMixin = require('reactfire');
var {
  AppRegistry,
  StyleSheet,
  Text,
  View,

## index.android.js
'use strict';

var React = require('react-native');
var Firebase = require('firebase');
var {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  TextInput,

## gist:c7b0612b6ffbb5f6b1cd
new Firebase("https://yours.firebaseio.com/").createUser("user@domain.com", "password", new Firebase.ValueResultHandler<java.util.Map<String, Object>>() {
    public void onSuccess(java.util.Map result) {
        System.out.println("Successfully created user account with uid: " + result.get("uid"));
    }
    public void onError(com.firebase.client.FirebaseError firebaseError) {
        System.err.ptinln("Error while creating user " + firebaseError);
    }
});
	// In Firebase it is often better to react to authentication state
	// changes, instead getting the current authentication state everywhere.
	// To respond to auth state changes, use an auth state change listener
	// like this:
	FirebaseAuth auth = FirebaseAuth.getInstance();
	auth.addAuthStateListener(new FirebaseAuth.AuthStateListener() {
	@Override
	public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
	if (firebaseAuth.getCurrentUser() == null) {
	Log.i("firebase", "AuthState changed to null");
	// To detect when a write operation is rejected by your Realtime Database
	// security rules, add a completion listener to the `setValue()` call and
	// throw the exception if the task failed.
	val ref = FirebaseDatabase.getInstance().getReference()
	ref.push()
	.setValue(ServerValue.TIMESTAMP)
	.addOnCompleteListener(new CompletionListener() {
	@Override
	public void onComplete(Task<Void> task) {
	Log.i("firebase", String.valueOf(task.isSuccessful()))
	<html>
	<head>
	<script src="https://www.gstatic.com/firebasejs/3.0.0/firebase.js"></script>
	<title>ZeroToApp</title>
	<style>
	#messages { width: 40em; border: 1px solid grey; min-height: 20em; }
	#messages img { max-width: 240px; max-height: 160px; display: block; }
	#header { position: fixed; top: 0; background-color: white; }
	.push { margin-bottom: 2em; }
	@keyframes yellow-fade { 0% {background: #f2f2b8;} 100% {background: none;} }
	package com.google.firebase.zerotoapp;

	public class ChatMessage {
	public String name;
	public String message;

	public ChatMessage() {
	}

	public ChatMessage(String name, String message) {
	public class Main {
	static ValueEventListener mListener;

	public static void main(String[] args) throws Exception {
	Firebase ref = new Firebase("https://<your-app>.firebaseio.com/");
	mListener = ref.addValueEventListener(new ValueEventListener() {
	@Override
	public void onDataChange(DataSnapshot snapshot) {
	if (snapshot.exists()) {
	System.out.println("The value is now "+snapshot.getValue());
	var ref = new Firebase('https://yours.firebaseio.com/acknowledge');
	var users = [];

	function $(selector) {
	var result = document.querySelectorAll(selector);
	return (result.length > 1) ? Array.prototype.slice.call(result) : result[0];
	}

	function handleAuthResult(error, authData) {
	if (error) {
	'use strict';

	var React = require('react-native');
	var Firebase = require('firebase');
	var ReactFireMixin = require('reactfire');
	var {
	AppRegistry,
	StyleSheet,
	Text,
	View,
	new Firebase("https://yours.firebaseio.com/").createUser("user@domain.com", "password", new Firebase.ValueResultHandler<java.util.Map<String, Object>>() {
	public void onSuccess(java.util.Map result) {
	System.out.println("Successfully created user account with uid: " + result.get("uid"));
	}
	public void onError(com.firebase.client.FirebaseError firebaseError) {
	System.err.ptinln("Error while creating user " + firebaseError);
	}
	});