Hello Android Example || Hello World Example In Android

 

Step 1.

Run Android Studio and create a new Android Studio project

Step 2.

Now Select Any Activity (For new fresh project use Empty Activity)

Step 3.

Now Enter Your Application Name, Package name of application / Your Company Domain ( Like:- com.your website name.your application name ), Project Location, Language ( In This Tutorial we use Java Language ) and Minimum API level ( The min API level is the minimum version of the Android operating system required to run your application ) ( In this tutorial we use API 22. This is Android 5.1( Lollipop ) )

Now an android project has been created. You can explore the android project and see the simple program, it looks like this:

Now you see 2 files in the project

1. activity_main.xml

2. MainActivity.java

Android studio auto generates code for activity_main.xml file. You may edit this file according to your requirement.

XML file looking like this

   <?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">


   <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"/>

  </androidx.constraintlayout.widget.ConstraintLayout> 

Java file looking like this

 package com.akshayarora.myapplication;

 import androidx.appcompat.app.AppCompatActivity;
 import android.os.Bundle;

 public class MainActivity extends AppCompatActivity {

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

Now Connect Your Device to your PC / laptop
Before connecting your device to your PC / laptop Enable Developer Option


Now run the Android Application
Click the run icon on the toolbar or simply press Shift + F10.

Now Select Your Device then click on OK Button
This process takes 2 to 3 minutes

While Installing time click on the Install option on your device
After Install Application Automatically Launch
The application Looks like this

Thank you!