Working with Google Firebase Part-2

Hello guys, In 1st part of this series we work with setup our android app on Firebase console. In this part we will work with project structure and coding part.What we do in this :-

We will work with--  1: Signup

                                   2: Login

                                   3: Retrieve password

Hope you have setup your project. Project structure should be like this:

Add permission of Internet in you manifest.

               <uses-permission android:name="android.permission.INTERNET" />

Add below line in you build.gradle(picture-1) dependencies

        compile "com.google.firebase:firebase-auth:9.2.0"

Add below line in you build.gradle(picture-1) in last

        apply plugin: 'com.google.gms.google-services'

Add below line in you app-gradle(picture-2) dependencies

       classpath 'com.google.gms:google-services:3.0.0'

Now in onCreate(...) method of your Activity(in my case MainActivity), create an instance of

FirebaseAuth.With this auth instance, you can do the task of signup, login, password retrieve,

 change password, change your email etc. like this :

                    FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();

SignUp :

firebaseAuth.createUserWithEmailAndPassword("your email",

        "your password").addOnCompleteListener(new OnCompleteListener<AuthResult>() {

            @Override   

            public void onComplete(@NonNull Task<AuthResult> task) {

                   if (!task.isSuccessful()) {

                      Snackbar.make(etEmail, "Unable to register...", Snackbar.LENGTH_SHORT)

                      .show();

                    return;

        }

        Toast.makeText(MainActivity.this, "Successfully registered...", Toast.LENGTH_SHORT)

        .show();

    }

});

Login :

firebaseAuth.signInWithEmailAndPassword("your email",

 "your password").addOnCompleteListener(new OnCompleteListener<AuthResult>() {

            @Override          

            public void onComplete(@NonNull Task<AuthResult> task) {

                 if (!task.isSuccessful()) {

                    Snackbar.make(etEmail, "You may not registered. Please Create        account first",

                    Snackbar.LENGTH_SHORT).show();

                    return;

                }

                Toast.makeText(LoginActivity.this, "Successfully login...", Toast.LENGTH_SHORT)

                .show();

            }

        });

Retrive Password :

firebaseAuth.sendPasswordResetEmail("your email").addOnCompleteListener(new OnCompleteListener<Void>() {

    @Override

    public void onComplete(@NonNull Task<Void> task) {

        if (!task.isSuccessful()) {

            Snackbar.make(etEmail, "Unable to send password reset email",                 Snackbar.LENGTH_SHORT).show();

            return;

        }

        Snackbar.make(etEmail, "Password reset email has been send to you email id." +

                " Please follow the link and reset your password", Snackbar.LENGTH_SHORT).show();

    }

});

This is all about Google Firebase Authentication. In my next blog i will post tutorial for Push Notification using Firebase. and SOURCE CODE of firebase authentication and firebase push notification both.

Suggestions are most welcome. Please keep reading my blog and share to your friends :)