Vorgehensweise beim erstellen einer App

package de.avdr;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;

abstract public class MainMenuActivity extends Activity {

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        AVDR.init();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu objMenu) {
        MenuInflater objInflater = getMenuInflater();
        objInflater.inflate(R.menu.options_menu, objMenu);

        return super.onCreateOptionsMenu(objMenu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem objItem) {
        switch (objItem.getItemId()) {
            case R.id.current:
                startActivity (new Intent (this, CurrentActivity.class));
                break;
            case R.id.programm:
                break;
            case R.id.remotecontrol:
                startActivity (new Intent (this, RemoteControlActivity.class));
                break;
            case R.id.help:
                break;
            case R.id.quit:
                break;
            case R.id.records:
                break;
            case R.id.settings:
                break;
            case R.id.timer:
                break;
            default:
                return super.onOptionsItemSelected(objItem);
        }

        return true;
   }
}