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Hello World in Android Application

Published on November 30, -0001 12:00:00 AM

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Step 1 : Open the Eclipse and create a new Android project using Blank Activity application template. Give the application name "HelloWorld in Android".
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:tools="http://schemas.android.com/tools"
	android:layout_width="match_parent"
    android:layout_height="match_parent">
	<TextView
    android:layout_width="wrap_content"
    android:id="@+id/tv"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    tools:context=".MainActivity"
    android:textSize="40dp" />
</RelativeLayout>


Step 2 : Copy this Code to the .Java File.
package com.example.hello_world;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity {
	private TextView tv;

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

        tv=(TextView)findViewById(R.id.tv);
        tv.setText("Hello World!");
    }
}
ALL COMMENTS (2)
Abhishek Bedre 2017-03-28 17:25:15
I have implemented my own "jarvis"....thanks to this example.        
2019-01-03 13:22:19
It is working fine in desktop but not working in android mobile