SSO登录对话框返回fbDidNotLogin，没有错误指示

Question

I have recently created a new Facebook app ID as I'm adding Facebook SSO integration into my app. My app within Facebook is set to Native iOS and I've included the Bundle ID and a current published app's Apple ID (for testing).

I've implemented the SDK as per the instructions (I have two other iOS apps currently using the SDK without issue as well). All delegate methods and required plist entries are in place for the URL callbacks.

After attempting a login I'm shown the Facebook white screen (just a loading spinner) with blue bar but after 5 seconds it redirects back to my app and hits the fbDidNotLogin delegate method. That method doesn't include any sort of retrievable error (at least none that is documented or available to me).

So at this point I'm at a loss for what might be causing my login to fail. Is there any way to get a more detailed error? Or has anybody else run into this same problem?

Answer 1

I had the same issue. Solved this by changing two items in the Facebook app settings:

1. Configured for iOS SSO set to enabled
2. Updated the iOS Bundle ID so that it matched by bundle ID exactly (previously the casing was different)

Not sure which item fixed it, I largely suspect the first...but worth checking both.

Answer 2

Make sure your device's time and date settings are correct. I had this happen to me when I recharged and turned on an iPod whose battery had died. The date and time were totally wrong, and when I set them to what they were supposed to be, I got the Facebook login dialog just fine.