Write a program to Toast Hello World |Android Program|


activity_main.xml

<?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=".MainActivity">
    <
Button
       
android:id="@+id/DisplayToast"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:onClick="DisplayToast"
       
android:text="Display"
       
app:layout_constraintBottom_toBottomOf="parent"
       
app:layout_constraintEnd_toEndOf="parent"
       
app:layout_constraintHorizontal_bias="0.554"
       
app:layout_constraintStart_toStartOf="parent"
       
app:layout_constraintTop_toTopOf="parent"
       
app:layout_constraintVertical_bias="0.499" />
</
androidx.constraintlayout.widget.ConstraintLayout>


MainActivity.java
package com.example.toasthello;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void DisplayToast(View V)
    {
        Toast.makeText(MainActivity.this,"Hello World",Toast.LENGTH_SHORT).show();
    }
}

Design


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