At this point, we have a reference to the PointOfInterest object, but we have not taken any action to populate the content on UI. Populating the POI details on UI is a pretty straightforward process.

The EditText widget has a property named Text, which we can set to initialize the content for the widget. Let's create a simple method named UpdateUI(), which takes care of populating the POI details on the user interface widgets.

The following listing shows what is needed for UpdateUI():

protected void UpdateUI()
{
     _nameEditText.Text = _poi.Name;
     _descrEditText.Text = _poi.Description;
     _addrEditText.Text = _poi.Address;
     _latEditText.Text = _poi.Latitude.ToString ();
     _longEditText.Text = _poi.Longitude.ToString ();
}

Call the UpdateUI() method at the end of the OnCreate() callback.

You should be able to run POIApp now, and test the navigation by clicking on any one of the list rows in POIListActivity. Notice that the POIDetailActivity will...