NullPointerException trying to launch a map fragment

First time I tried to do anything with google maps / places game services and APIs. I am getting NPE error when trying to start an activity

06-10 09:15:45.704  19942-19942/com.rcd.mypr E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.rcd.mypr, PID: 19942
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.rcd.mypr/com.rcd.mypr.BoxLocator.BoxLocator}: java.lang.NullPointerException
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2209)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2269)
            at android.app.ActivityThread.access$800(ActivityThread.java:139)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1210)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5102)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.NullPointerException
            at com.rcd.mypr.BoxLocator.BoxLocator.initCompo(BoxLocator.java:137)
            at com.rcd.mypr.BoxLocator.BoxLocator.onCreate(BoxLocator.java:43)
            at android.app.Activity.performCreate(Activity.java:5248)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1110)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2173)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2269)
            at android.app.ActivityThread.access$800(ActivityThread.java:139)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1210)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5102)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
            at dalvik.system.NativeStart.main(Native Method)

      

        
        
        
      

    

Here are my maps_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    class="com.google.android.gms.maps.MapFragment"/>

      

        
        
        
      

    

BoxLocator.java

package com.rcd.mypr.BoxLocator;

import android.app.ActionBar;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.widget.ArrayAdapter;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.rcd.mypr.R;

import java.util.ArrayList;

public class BoxLocator extends Activity {

    private final String TAG = getClass().getSimpleName();
    private GoogleMap mMap;
    private String[] places;
    private LocationManager locationManager;
    private Location loc;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initCompo();
        places = getResources().getStringArray(R.array.places);
        currentLocation();
        final ActionBar actionBar = getActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
        actionBar.setListNavigationCallbacks(ArrayAdapter.createFromResource(
                        this, R.array.places, android.R.layout.simple_list_item_1),
                new ActionBar.OnNavigationListener() {

                    @Override
                    public boolean onNavigationItemSelected(int itemPosition,
                                                            long itemId) {
                        Log.e(TAG,
                                places[itemPosition].toLowerCase().replace("-",
                                        "_"));
                        if (loc != null) {
                            mMap.clear();
                            new GetPlaces(BoxLocator.this,
                                    places[itemPosition].toLowerCase().replace(
                                            "-", "_").replace(" ", "_")).execute();
                        }
                        return true;
                    }

                });

    }

    private class GetPlaces extends AsyncTask<Void, Void, ArrayList<Place>> {

        private ProgressDialog dialog;
        private Context context;
        private String places;

        public GetPlaces(Context context, String places) {
            this.context = context;
            this.places = places;
        }

        @Override
        protected void onPostExecute(ArrayList<Place> result) {
            super.onPostExecute(result);
            if (dialog.isShowing()) {
                dialog.dismiss();
            }
            for (int i = 0; i < result.size(); i++) {
                mMap.addMarker(new MarkerOptions()
                        .title(result.get(i).getName())
                        .position(
                                new LatLng(result.get(i).getLatitude(), result
                                        .get(i).getLongitude()))
                        .icon(BitmapDescriptorFactory
                                .fromResource(R.drawable.pin))
                        .snippet(result.get(i).getVicinity()));
            }
            CameraPosition cameraPosition = new CameraPosition.Builder()
                    .target(new LatLng(result.get(0).getLatitude(), result
                            .get(0).getLongitude())) // Sets the center of the map to
                            // Mountain View
                    .zoom(14) // Sets the zoom
                    .tilt(30) // Sets the tilt of the camera to 30 degrees
                    .build(); // Creates a CameraPosition from the builder
            mMap.animateCamera(CameraUpdateFactory
                    .newCameraPosition(cameraPosition));
        }

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            dialog = new ProgressDialog(context);
            dialog.setCancelable(false);
            dialog.setMessage("Loading..");
            dialog.isIndeterminate();
            dialog.show();
        }

        @Override
        protected ArrayList<Place> doInBackground(Void... arg0) {
            PlacesService service = new PlacesService(
                    "Put your project browser API key here");
            ArrayList<Place> findPlaces = service.findPlaces(loc.getLatitude(), // 28.632808
                    loc.getLongitude(), places); // 77.218276

            for (int i = 0; i < findPlaces.size(); i++) {

                Place placeDetail = findPlaces.get(i);
                Log.e(TAG, "places : " + placeDetail.getName());
            }
            return findPlaces;
        }

    }

    private void initCompo() {
        mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
                .getMap();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    private void currentLocation() {
        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

        String provider = locationManager
                .getBestProvider(new Criteria(), false);

        Location location = locationManager.getLastKnownLocation(provider);

        if (location == null) {
            locationManager.requestLocationUpdates(provider, 0, 0, listener);
        } else {
            loc = location;
            new GetPlaces(BoxLocator.this, places[0].toLowerCase().replace(
                    "-", "_")).execute();
            Log.e(TAG, "location : " + location);
        }

    }

    private LocationListener listener = new LocationListener() {

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {

        }

        @Override
        public void onProviderEnabled(String provider) {

        }

        @Override
        public void onProviderDisabled(String provider) {

        }

        @Override
        public void onLocationChanged(Location location) {
            Log.e(TAG, "location update : " + location);
            loc = location;
            locationManager.removeUpdates(listener);
        }
    };
}

      

        
        
        
      

    

Here is line 137:

mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
                .getMap();

      

        
        
        
      

    

Here is line 43: initCompo();