Android - Create app with pure Java and no XML?

Question

I\'m wondering if it is possible to create an Android app with only Java. No XML, no other things.

In Eclipse, when I create a new Android Project, the Manifest xml-

Answer 1

yes it's possible to make an app with java and no xml.
here's a simple example.
i use eclipse.
first i made my own my class called MyView, which extends View.

public class MyView extends View {

    Paint paint;

    public MyView(Context context) {
        super(context);
        setBackgroundColor(Color.BLACK);
        paint = new Paint();
        paint.setColor(Color.GREEN);
        paint.setTextSize(50);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        canvas.drawCircle(50, 50, 50, paint);
        canvas.drawText("hello", 0, 150, paint);
        canvas.drawLine(0, 150, 100, 170, paint);
    }

}

in the activity, i create a MyView object called myView.
i get rid of setContentView(R.layout.activity_main);
then i type setContentView(myView);

public class MainActivity extends Activity {

    MyView myView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//      setContentView(R.layout.activity_main); // i delete this
        myView = new MyView(this);
        setContentView(myView);
    }
}

res\layout\activity_main.xml file can now be deleted.
res\layout folder can now be deleted.