Login and Registration in Firebase Android Studio

 

Login XML Code:- 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".Login">
<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="Email"
    android:id="@+id/signemal"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Password"
        android:id="@+id/signpass"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Login"
        android:id="@+id/loginbtn"/>
    <TextView
android:id="@+id/gotoregister"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Register"
        android:layout_gravity="center"
        android:textSize="25sp"/>
    <ProgressBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:id="@+id/loginprogress"/>
</LinearLayout>

Register Xml Code:-

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".Register">
<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="name"
    android:id="@+id/registername"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="email"
        android:id="@+id/registemai"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="password"
        android:id="@+id/registerpass"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Signup"
        android:id="@+id/signupbtn"/>
    <TextView
        android:id="@+id/gotosiggin"
        android:textSize="20sp"
        android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Signin"/>
    <ProgressBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:id="@+id/registerprogress"/>
</LinearLayout>

Login Java Code :-

package com.niranjan.ecomerceapp;

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

import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;

public class Login extends AppCompatActivity {
EditText logemail,logpass;
Button logbtn;
TextView gotoreg;
FirebaseAuth auth;
ProgressBar loginprogress;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        auth =FirebaseAuth.getInstance();
        loginprogress=findViewById(R.id.loginprogress);
        loginprogress.setVisibility(View.GONE);
        logemail=findViewById(R.id.signemal);
        logpass=findViewById(R.id.signpass);
        logbtn=findViewById(R.id.loginbtn);
        gotoreg=findViewById(R.id.gotoregister);
        gotoreg.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(Login.this,Register.class));
            }
        });
        logbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

loginuser();
                loginprogress.setVisibility(View.VISIBLE);
            }
        });
    }

    private void loginuser() {

        String  userEmail = logemail.getText().toString();
        String userPassword = logpass.getText().toString();

        if (TextUtils.isEmpty(userEmail)){
            Toast.makeText(this, "Email is Empty", Toast.LENGTH_SHORT).show();
            return;
        }
        if (TextUtils.isEmpty(userPassword)){
            Toast.makeText(this, "Password is Empty", Toast.LENGTH_SHORT).show();
            return;
        }
        if (userPassword.length()<6){
            Toast.makeText(this, "Password length must be gratter than 6 letter", Toast.LENGTH_SHORT).show();
            return;
        }
        auth.signInWithEmailAndPassword(userEmail,userPassword)
                .addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()){

                            Toast.makeText(Login.this, "Login Sucessfully", Toast.LENGTH_SHORT).show();

                        }else {
                            Toast.makeText(Login.this, "Error", Toast.LENGTH_SHORT).show();
                        }
                    }
                });
    }
}

Register Java Code:-

package com.niranjan.ecomerceapp;

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

import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.FirebaseDatabase;

public class Register extends AppCompatActivity {
EditText regname,regemail,regpass;
Button regbtn;
TextView gotosign;
FirebaseAuth auth;
FirebaseDatabase database;
ProgressBar regprogress;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        auth=FirebaseAuth.getInstance();
        regprogress=findViewById(R.id.registerprogress);
        regprogress.setVisibility(View.GONE);
        database=FirebaseDatabase.getInstance();
        regname=findViewById(R.id.registername);
        regemail=findViewById(R.id.registemai);
        regpass=findViewById(R.id.registerpass);
        regbtn=findViewById(R.id.signupbtn);
        gotosign=findViewById(R.id.gotosiggin);
        gotosign.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(Register.this,Login.class));
            }
        });
        regbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
createUser();
                regprogress.setVisibility(View.VISIBLE);
            }
        });

    }
    private void createUser(){
        String userName = regname.getText().toString();
        String userEmail = regemail.getText().toString();
        String userPassword = regpass.getText().toString();
        if (TextUtils.isEmpty(userName)){
            Toast.makeText(this, "Name is Empty", Toast.LENGTH_SHORT).show();
            return;
        }
        if (TextUtils.isEmpty(userEmail)){
            Toast.makeText(this, "Email is Empty", Toast.LENGTH_SHORT).show();
            return;
        }
        if (TextUtils.isEmpty(userPassword)){
            Toast.makeText(this, "Password is Empty", Toast.LENGTH_SHORT).show();
            return;
        }
        if (userPassword.length()<6){
            Toast.makeText(this, "Password length must be gratter than 6 letter", Toast.LENGTH_SHORT).show();
            return;
        }
        auth.createUserWithEmailAndPassword(userEmail,userPassword)
                .addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()){
                            Usermodel usermodel=new Usermodel(userName,userEmail,userPassword);
                            String id = task.getResult().getUser().getUid();
database.getReference().child("Admin").child(id).setValue(usermodel);
                            regprogress.setVisibility(View.GONE);
                            Toast.makeText(Register.this, "Success", Toast.LENGTH_SHORT).show();
                        }else {
                            Toast.makeText(Register.this, "Error", Toast.LENGTH_SHORT).show();
                        }
                    }
                });
    }
}


Only Java Code Usermodel :-

package com.niranjan.ecomerceapp;

public class Usermodel {
    String name,email,password;

    public Usermodel() {
    }

    public Usermodel(String name, String email, String password) {
        this.name = name;
        this.email = email;
        this.password = password;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}


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