I have been following this thread...just implement via info above and get the same white screen on Nexus 7 with android 4.2.2 the first time I was taken to a browser and tried to login to FB. I noticed when I clicked back and tried to like something in app it worked...sort of.
I then looked at numerous other data items that would be like-able in my app and they were already marked as liked (but I have not like anything other than the first). After opening app again, I can like things separately so maybe the odd behavior of the initial white screen made things strange at first.
When I liked something, on facebook it showed an odd graphic of an envelope icon for photo. Maybe I can resolve that with adding Open Graph protocol tags.
I also noticed that send button is not showing either.
I am also curious about the fact that my device sent me to a web browser to login even though I have the FB app installed and I am logged in to it. After my initial issues, I then logged out of facebook on external version of chrome . I reopened my app and could still like things and comment so is it possible that the in-app login status might be restricted to in-app browser? If so, seem strange because I would never be able to log out.
I am not sure how to test moving forward now because I need to log out of fb on the in-app browser to restest for initial use of like button again. Perhaps uninstalling app will work.
Obviously, I need to play with it more to try to figure out what is happening.