Android Facebook SDK: Check if the user is logged in or not

Question

I\'m have a feature on my Android app where the user authorizes the app and shares a link.

I also need to give an option for the user to logout of facebook and I nee

Answer 1

I had the same issue. Here is my solution using SDK 4.0:

First of all, in your activity dealing with login check, be sure to call this primary:

        FacebookSdk.sdkInitialize(this.getApplicationContext());

In your onCreate method put this :

updateWithToken(AccessToken.getCurrentAccessToken());

    new AccessTokenTracker() {
        @Override
        protected void onCurrentAccessTokenChanged(AccessToken oldAccessToken, AccessToken newAccessToken) {
            updateWithToken(newAccessToken, handler);
        }
    };

Then add the method called:

private void updateWithToken(AccessToken currentAccessToken) {
    if (currentAccessToken != null) {
        fillUIWithFacebookInfos(handler);
    } else {
        login();
    }
}

This way will handle the already logged in user and the newly logged in user.