Open Facebook Page URL in Facebook app with Intent

IntentFacebook.java

....

  public void startFacebook(String facebookUrl) {

        try {
            Uri uri = null;

            int versionCode = getPackageManager()
                    .getPackageInfo("com.facebook.katana", 0)
                    .versionCode;

            if (versionCode >= 3002850) {
                facebookUrl = facebookUrl.toLowerCase().replace("www.", "m.");
                if (!facebookUrl.startsWith("https")) {
                    facebookUrl = "https://" + facebookUrl;
                }
                uri = Uri.parse("fb://facewebmodal/f?href=" + facebookUrl);
            } else {
                String pageID = facebookUrl.substring(facebookUrl.lastIndexOf("/"));

                uri = Uri.parse("fb://page" + pageID);
            }
            Log.d(TAG, "startFacebook: uri = " + uri.toString());
            startActivity(new Intent(Intent.ACTION_VIEW, uri));
        } catch (Throwable e) {
            startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(facebookUrl)));
        }
    }

....