Develop an android application to create the login form and display Login Successful / Unsuccessful toast message
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.loginapp">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
activity_main.xml
<?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"
tools:context=".MainActivity"
android:orientation="vertical"
android:padding="20dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Login Form"
android:layout_marginTop="100dp"
android:textSize="35sp"
android:textColor="@color/colorAccent"
android:gravity="center_horizontal"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Username"
android:layout_marginTop="100dp"
android:textSize="20sp"/>
<EditText android:id="@+id/etUsername"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Password"
android:textSize="20sp"/>
<EditText android:id="@+id/etPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"/>
<TextView android:id="@+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@android:color/holo_red_dark"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Login"
android:layout_gravity="center_horizontal"
android:layout_marginTop="50dp"
android:onClick="login"/>
</LinearLayout>
MainActivity.java
package com.example.loginapp;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
EditText etUsername,etPassword;
TextView tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
etUsername = findViewById(R.id.etUsername);
etPassword = findViewById(R.id.etPassword);
tv = findViewById(R.id.tv);
}
public void login(View view) {
if(etUsername.getText().toString().equals("admin") &&
etPassword.getText().toString().equals("1234")) {
tv.setText("Login Successful");
}
else {
tv.setText("");
Toast.makeText(MainActivity.this, "Login fail.", Toast.LENGTH_SHORT).show();
}
}
}
OUTPUT