title: Adding actionbar to FragmentActivity
body: <p>I am making an app that is using google maps for some specific reason. So I created an Google Maps app in Android Studio and I got an activity that extends FragmentActivity. Everything works perfectly but now I want to add the action bar at top of the screen. The problem is that the map takes the whole screen and I don't know how to fix it</p>
  
  <p>Here is my code for activity:</p>
  
  <pre><code>public class MainActivity extends FragmentActivity implements LocationListener {
      private GoogleMap mMap; // Might be null if Google Play services APK is not available.
      double lon = 0;
      double lat = 0;
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          setUpMapIfNeeded();
  
      }
      @Override
      protected void onResume() {
          super.onResume();
          setUpMapIfNeeded();
      }
      public void showSettingsAlert(){
          AlertDialog.Builder alertDialog = new AlertDialog.Builder(this);
  
          // Setting Dialog Title
          alertDialog.setTitle("GPS settings");
  
          // Setting Dialog Message
          alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?");
  
          // On pressing Settings button
          alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
              public void onClick(DialogInterface dialog,int which) {
                  Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                  startActivity(intent);
              }
          });
  
          // on pressing cancel button
          alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
              public void onClick(DialogInterface dialog, int which) {
                  dialog.cancel();
              }
          });
  
          // Showing Alert Message
          alertDialog.show();
      }
      private void setUpMapIfNeeded() {
          LocationManager manager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
          /*if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)){
              showSettingsAlert();
          }
          else{*/
          // Getting Google Play availability status
          int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext());
  
          // Showing status
          if(status!=ConnectionResult.SUCCESS){ // Google Play Services are not available
  
              int requestCode = 10;
              Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, requestCode);
              dialog.show();
  
          }else { // Google Play Services are available
  
              // Getting reference to the SupportMapFragment of activity_menu.xml
              SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
  
              // Getting mMap object from the fragment
              mMap = fm.getMap();
  
              // Enabling MyLocation Layer of Google Map
              mMap.setMyLocationEnabled(true);
  
              // Getting LocationManager object from System Service LOCATION_SERVICE
              LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
              boolean networkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
              if(networkEnabled){
                  Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                  if(location!=null){
                      lon = location.getLongitude();
                      lat = location.getLatitude();
                      LatLng latLng = new LatLng(lat, lon);
                      // Showing the current location in Google Map
                      mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
                      // Zoom in the Google Map
                      mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
                  }
              }
              // Creating a criteria object to retrieve provider
              Criteria criteria = new Criteria();
  
              // Getting the name of the best provider
              String provider = locationManager.getBestProvider(criteria, true);
  
              // Getting Current Location
              Location location = locationManager.getLastKnownLocation(provider);
  
              if(location!=null){
                  onLocationChanged(location);
              }
              locationManager.requestLocationUpdates(provider, 20000, 0, this);
          /*}*/}
      }
  
  
      @Override
      public void onLocationChanged(Location location) {
          double latitude = location.getLatitude();
  
          // Getting longitude of the current location
          double longitude = location.getLongitude();
  
          // Creating a LatLng object for the current location
          LatLng latLng = new LatLng(latitude, longitude);
  
          // Showing the current location in Google Map
          mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
  
          // Zoom in the Google Map
          mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
  
      }
  
      @Override
      public void onStatusChanged(String provider, int status, Bundle extras) {
  
      }
  
      @Override
      public void onProviderEnabled(String provider) {
  
      }
  
      @Override
      public void onProviderDisabled(String provider) {
  
      }
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu; this adds items to the action bar if it is present.
          getMenuInflater().inflate(R.menu.activity_menu, menu);
          super.onCreateOptionsMenu(menu);
          return true;
      }
  </code></pre>
  
  <p>this is my layout for  the activity (Maybe there is the problem ?):</p>
  
  <pre><code>&lt;fragment xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:id="@+id/map"
  tools:context=".MainActivity"
  android:name="com.google.android.gms.maps.SupportMapFragment"/&gt;
  </code></pre>