Android Facebook sample app doesn't login when FB app installed

Question

At first I thought this was my app but I get the exact same problem when using any of the FB sample apps.

Take the HelloFacebookSample for example, which gives you a login button and after login shows you your pic and enables you to post status updates.

If I don't have the FB app installed on my phone the login button gives me a web view which i login through and the photo appears in the app and i can make posts. However if the FB app is installed on my phone it brings up a dialog saying the app would like to access you public profile etc. I press OK and..... nothing.

I have found many questions that seem similar but the problem was usually using a debug key as opposed to a release key, but I am running from eclipse so the debug key is still appropriate.

Any ideas?

Answer 1

if there is the default Facebook App is installed in your phone or if you are trying to upload your app on Google Play, then you need a different KeyHash. because, when u developed your FB app you have registered your FB app with a key hash which is created by using the default debug.keystore.

so, now u need a different KeyStore to generate the different KeyHash. u need a signed KeyStore, which u can get by the help of this tutorial , after generating new keystore, generate a key hash and register your FB App with this new key hash. this should work. for generating new KeyHash u can follow this link

Answer 2

I found the next line that helped me in the above scenario:

mLoginFacebook.setReadPermissions(Arrays.asList("email"));

it comes right after:

mLoginFacebook = (LoginButton) rootView.findViewById(R.id.authButton);
mLoginFacebook.setFragment(this);

solved all my problems.. Cheers