if you don't want to integrate Google Maps to in your app, use this method

launchGoogleMaps

private void launchGoogleMaps(Context context, double latitude,
                                  double longitude) {
        try {
            String format = "geo:0,0?q=" + Double.toString(latitude) + ","
                    + Double.toString(longitude);
            Uri uri = Uri.parse(format);
            Intent intent = new Intent(Intent.ACTION_VIEW, uri);
            intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(intent);
        } catch (Exception e) {
            // maps application is unavailable, fallback to browser
            Intent intent = new Intent(android.content.Intent.ACTION_VIEW,
                    Uri.parse(String.format(
                            "http://maps.google.com/maps?q=%1$s,%2$s&z=15",
                            latitude, longitude)));
            startActivity(intent);
        }
    }