package de.refugeehackathon.transit;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;

import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
import org.osmdroid.views.MapController;
import org.osmdroid.views.MapView;

public class MainActivity extends AppCompatActivity {
    private MapView mMapView;
    private MapController mMapController;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        mMapView = (MapView) findViewById(R.id.mapview);
        mMapView.setBuiltInZoomControls(true);
        mMapView.setMultiTouchControls(true);
        mMapView.setUseDataConnection(true);
        mMapView.setTileSource(TileSourceFactory.MAPQUESTOSM);

        /*
        mMapController = (MapController) mMapView.getController();
        mMapController.setZoom(13);
        GeoPoint gPt = new GeoPoint(51500000, -150000);
        mMapController.setCenter(gPt);
*/


    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

package de.refugeehackathon.transit;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;

import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapController;
import org.osmdroid.views.MapView;

public class MainActivity extends AppCompatActivity {
    private MapView mMapView;
    private MapController mMapController;

    public static final GeoPoint BERLIN = new GeoPoint(52.516667, 13.383333);


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        mMapView = (MapView) findViewById(R.id.mapview);
        mMapView.setBuiltInZoomControls(true);
        mMapView.setMultiTouchControls(true);
        mMapView.setUseDataConnection(true);
        mMapView.setTileSource(TileSourceFactory.MAPQUESTOSM);

        mMapController = (MapController) mMapView.getController();
        mMapController.setZoom(13);
        mMapController.setCenter(BERLIN);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

Move map to Berlin.