Create a login application (check username and password). On successful login, pop up the message(“Welcome username”).

/*Create a login application (check username and password). On successful login, pop up the message(“Welcome username”).*/

FileName: activity_main.xml

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

<RelativeLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/activity_main"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity">

    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:inputType="textPassword"

        android:ems="15"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="190dp"

        android:id="@+id/editTextPass1"

        android:hint="password" />

    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:inputType="textPersonName"

        android:ems="15"

        android:layout_alignBottom="@+id/editTextPass"

        android:layout_alignEnd="@+id/editTextPass"

        android:layout_marginBottom="90dp"

        android:id="@+id/editTextUser1"

        android:hint="username" />

    <Button

        android:text="Login"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_below="@+id/editTextPass1"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="80dp"

        android:id="@+id/button1" />

</RelativeLayout>

FileName: MainActivity.java

/**

 * Created by Parikshit on 01-01-2019.

 */

package com.ducskecode.login_page;

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 {

EditText username, password;

Button login;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

username = (EditText) findViewById(R.id.editTextUser1);

password = (EditText) findViewById(R.id.editTextPass1);

login = (Button) findViewById(R.id.button1);

login.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

if(username.getText().toString().equals("admin") &&

password.getText().toString().equals("admin")){

Toast.makeText(MainActivity.this, "Welcome to the login App " +

username.getText().toString(),

Toast.LENGTH_SHORT().show();

     }

else{

    Toast.makeText(MainActivity.this, "Invalid Details,sorry!!",

                            Toast.LENGTH_SHORT).show();

               }

           }

        });

    }

}