Open Facebook page from Android app?

Question

from my Android app, I would like to open a link to a Facebook profile in the official Facebook app (if the app is installed, of course). For iPhone, there exists the

Answer 1

open fb on button click event without using facebook sdk

 Intent FBIntent = new Intent(Intent.ACTION_SEND);
    FBIntent.setType("text/plain");
    FBIntent.setPackage("com.facebook.katana");
    FBIntent.putExtra(Intent.EXTRA_TEXT, "The text you wanted to share");
    try {
        context.startActivity(FBIntent);
    } catch (android.content.ActivityNotFoundException ex) {
        Toast.makeText(context, "Facebook have not been installed.", Toast.LENGTH_SHORT).show( );
    }

Answer 2

For Facebook page:

try {
    intent = new Intent(Intent.ACTION_VIEW, Uri.parse("fb://page/" + pageId));
} catch (Exception e) {
    intent =  new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.facebook.com/" + pageId));
}

For Facebook profile:

try {
    intent = new Intent(Intent.ACTION_VIEW, Uri.parse("fb://profile/" + profileId));
} catch (Exception e) {
    intent =  new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.facebook.com/" + profileId));
}

...because none of the answers points out the difference

Both tested with Facebook v.27.0.0.24.15 and Android 5.0.1 on Nexus 4