Login Application for validating EmailID and Password

Hello guys, welcome back with another tutorial of android studio.

Here in this post, I am sharing one source code to make a login application where you will have to validate Email ID and Password.

while creating simple login validation then you have to mostly follow some steps :

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Content of src/MainActivity.java 

package com.example.kenilvavaliya.demo;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private EditText username;
    private EditText passwd;
    private Button loginbutton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        username = (EditText) findViewById(R.id.editText2);
        passwd = (EditText) findViewById(R.id.editText3);
        loginbutton= (Button) findViewById(R.id.button);
        loginbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (username.getText().toString().equals("admin") &&
                        passwd.getText().toString().equals("kenil")) {
                    Toast.makeText(getApplicationContext(),
                            "Successfully login...", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(MainActivity.this, "Please enter valid username and password", Toast.LENGTH_LONG).show();

                }
            }
        });
    }
}

Content of res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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=".MainActivity">

    <EditText
        android:id="@+id/editText2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="103dp"
        android:ems="10"
        android:hint="Username"
        android:inputType="textPersonName"
        tools:layout_editor_absoluteX="0dp"
        tools:layout_editor_absoluteY="73dp" />

    <EditText
        android:id="@+id/editText3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="175dp"
        android:ems="10"
        android:hint="password"
        android:inputType="textPassword" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="203dp"
        android:text="Get access" />

</RelativeLayout>

Output: as a result, you can see 

Type username: admin

password: kenil

You can see the message: – Successfully login… It seems like this

For any query please comment below in comment box.

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