I have the following code to load native google map app into my project:

final Intent intent = new Intent(Intent.ACTION_VIEW, Uri
                    .parse("http://maps.google.com/maps?"
                            + "saddr=43.0054446,-87.9678884"
                            + "&daddr=42.9257104,-88.0508355"));

            intent.setClassName("com.google.android.apps.maps",
                    "com.google.android.maps.MapsActivity");

            startActivity(intent);

Is there any limitation or pre-requisties there i should know.
Because its working in my laptop emulator but not working on PC emulator.
I only load the native google map app, it should work on any emulator.
Is something i am missing here ??