Facebook Android SDK does not open Session after login

Question

1) This question appears many times and the awnser is always \"you have the wrong Key Hash\".

2) Facebook documentation tells we to use this code to get our Key Has

Answer 1

I figured it out:

The following method was missing. Just added it and everything worked.

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
}