Login and Registration in Firebase in FirebaseAuth(Session Management)

Login and Registration in Firebase in FirebaseAuth(Session Management)

Give Internet Permission and and Firebase to Project(all term true)

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Register">

    <androidx.cardview.widget.CardView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        app:cardCornerRadius="5dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <EditText
                android:id="@+id/registerName"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="16dp"
                android:layout_marginTop="16dp"
                android:layout_marginEnd="16dp"
                android:ems="10"
                android:hint="Full Name"
                android:inputType="textPersonName"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <EditText
                android:id="@+id/registerEmail"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="16dp"
                android:layout_marginTop="8dp"
                android:layout_marginEnd="16dp"
                android:ems="10"
                android:hint="Email Address"
                android:inputType="textEmailAddress"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/registerName" />

            <EditText
                android:id="@+id/registerPassword"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="16dp"
                android:layout_marginTop="8dp"
                android:layout_marginEnd="16dp"
                android:ems="10"
                android:hint="Password"
                android:inputType="textPassword"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/registerEmail" />

            <EditText
                android:id="@+id/registerPhone"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="16dp"
                android:layout_marginTop="8dp"
                android:layout_marginEnd="16dp"
                android:ems="10"
                android:hint="Phone Number"
                android:inputType="phone"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/registerPassword" />

            <CheckBox
                android:visibility="gone"
                android:id="@+id/isTeacher"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="16dp"
                android:layout_marginTop="8dp"
                android:text="Register As Teacher"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/registerPhone" />

            <CheckBox
                android:visibility="gone"
                android:id="@+id/isStudent"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:layout_marginEnd="16dp"
                android:text="Register as Student"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toEndOf="@+id/isTeacher"
                app:layout_constraintTop_toBottomOf="@+id/registerPhone" />

            <Button
                android:id="@+id/registerBtn"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="16dp"
                android:layout_marginTop="32dp"
                android:layout_marginEnd="16dp"
                android:text="Create Account"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/isStudent" />

            <Button
                android:id="@+id/gotoLogin"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="16dp"
                android:layout_marginTop="8dp"
                android:layout_marginEnd="16dp"
                android:layout_marginBottom="16dp"
                android:text="Login"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/registerBtn" />

        </androidx.constraintlayout.widget.ConstraintLayout>
    </androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>

package com.niranjan.youtuberegisterlogin;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.FirebaseFirestore;

import java.util.HashMap;
import java.util.Map;

public class Register extends AppCompatActivity {
    EditText fullName,email,password,phone;
    Button registerBtn,goToLogin;
    boolean valid = true;
    FirebaseAuth fAuth;
    FirebaseFirestore fstore;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        fullName = findViewById(R.id.registerName);
        email = findViewById(R.id.registerEmail);
        password = findViewById(R.id.registerPassword);
        phone = findViewById(R.id.registerPhone);
        registerBtn = findViewById(R.id.registerBtn);
        goToLogin = findViewById(R.id.gotoLogin);
fAuth = FirebaseAuth.getInstance();
fstore=FirebaseFirestore.getInstance();
       registerBtn.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {
               checkField(fullName);
               checkField(email);
               checkField(password);
               checkField(phone);

               if (valid){
                   fAuth.createUserWithEmailAndPassword(email.getText().toString(),password.getText().toString()).addOnSuccessListener(new OnSuccessListener<AuthResult>() {
                       @Override
                       public void onSuccess(AuthResult authResult) {
                           FirebaseUser user =fAuth.getCurrentUser();
                           Toast.makeText(Register.this, "Account created", Toast.LENGTH_SHORT).show();
                           DocumentReference df = fstore.collection("Users").document(user.getUid());
                           Map<String,Object> userinfo = new HashMap<>();
                           userinfo.put("Full name",fullName.getText().toString());
                           userinfo.put("User Name",email.getText().toString());
                           userinfo.put("Phone Number",phone.getText().toString());
                           userinfo.put("isUser","1");
                           df.set(userinfo);
                           startActivity(new Intent(getApplicationContext(),MainActivity.class));
                           finish();
                       }
                   }).addOnFailureListener(new OnFailureListener() {
                       @Override
                       public void onFailure(@NonNull Exception e) {
                           Toast.makeText(Register.this, "Failed", Toast.LENGTH_SHORT).show();

                       }
                   });
                   goToLogin.setOnClickListener(new View.OnClickListener() {
                       @Override
                       public void onClick(View v) {
                           startActivity(new Intent(getApplicationContext(),Login.class));
                       }
                   });

               }

           }
       });
    }

    public boolean checkField(EditText textField){
        if(textField.getText().toString().isEmpty()){
            textField.setError("Error");
            valid = false;
        }else {
            valid = true;
        }

        return valid;
    }
}

MainActivity Xml Page:-

MainActivity Java Page :-

package com.niranjan.youtuberegisterlogin;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import com.google.firebase.auth.FirebaseAuth;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button logout =findViewById(R.id.logoutBtn);
        logout.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                FirebaseAuth.getInstance().signOut();
                startActivity(new Intent(getApplicationContext(),Login.class));
                finish();
            }
        });
    }
}

NKV Computer Engineer

Login and Registration in Firebase in FirebaseAuth(Session Management)

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