I search a mean to set permissions like email or user_friends mandatory. I use the facebook login button with the method setReadPermissions. Currently when i check permissions on my account for my app i get email et user_friends optional. Without friendlist my app is useless.
My code below :
LoginButton authButton = (LoginButton) findViewById(R.id.login_button);
authButton.setReadPermissions(Arrays.asList("public_profile","email","user_friends"));