How to make a game on android libgdx using ShapeRenderer

This video will show you  how to make a basic game on android using libgdx game engine,
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Example:

import com.badlogic.gdx.*;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.GL20;

public class ShapeRendererSample implements ApplicationListener{
private OrthographicCamera camera;
private ShapeRenderer sr;
public void create(){
camera = new OrthographicCamera();
configureCamera();
sr = new ShapeRenderer();


}
configureCamera(){
if(Gdx.graphics.getHeight()<Gdx.graphics.getWidth())
{ 
camera.setToOrtho(false,800,800*Gdx.graphics.getHeight()/Gdx.graphics.getWidth());
}
else{
     camera.setToOrtho(false,800*Gdx.graphics.getWidth()/Gdx.graphics.getHeight(),800);
}
}
public void render(){
Gdx.gl.glClearColor(0,0,0,0);
Gdx.gl20.glClear(GL20.GL_COLOR_BUFFER_BIT);
camera.update();
sr.setProjectionMatrix(camera.combined);
sr.begin(ShapeRenderer.ShapeType.Filled);
sr.setColor(Color.RED);
sr.Circle(0,0,4.0f,);
sr.end();

}
public void resize(int width, int height){
configureCamera();

}
public void pause(){

}
public void resume(){

}
public void dispose(){
sr.dispose();
}

}