Call Activity after Facebook login

Question

I’m new in the world Android and I’m in need of some help.
I can’t make the call to a new Activity after the facebook login.

The login is running correctly and when it is successfully performed, it returns the same Activity with the button to Logout. I tried to make the call by Intent, but it didn’t work. Could you help me, please.

I’m using the facebook sdk 4.0

Below is the code of main Ragment:

public class MainFragment extends Fragment {

    private CallbackManager callbackManager;
    private TextView textView;
    private AccessTokenTracker accessTokenTracker;
    private ProfileTracker profileTracker;

    private FacebookCallback<LoginResult> callback = new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {
            AccessToken accessToken = loginResult.getAccessToken();
            Profile profile = Profile.getCurrentProfile();
            displayMessage(profile);


        }


        @Override
        public void onCancel() {

        }

        @Override
        public void onError(FacebookException e) {

        }
    };

    public MainFragment() {

    }


    @Override
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        FacebookSdk.sdkInitialize(getActivity().getApplicationContext());

        callbackManager = CallbackManager.Factory.create();

        accessTokenTracker= new AccessTokenTracker() {
            @Override
            protected void onCurrentAccessTokenChanged(AccessToken oldToken, AccessToken newToken) {

            }
        };

        profileTracker = new ProfileTracker() {
            @Override
            protected void onCurrentProfileChanged(Profile oldProfile, Profile newProfile) {
                displayMessage(newProfile);
            }
        };

        accessTokenTracker.startTracking();
        profileTracker.startTracking();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_main, container, false);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        LoginButton loginButton = (LoginButton) view.findViewById(R.id.login_button);
        textView = (TextView) view.findViewById(R.id.textView);

        loginButton.setReadPermissions("user_friends");
        loginButton.setFragment(this);
        loginButton.registerCallback(callbackManager, callback);

    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        callbackManager.onActivityResult(requestCode, resultCode, data);

        Intent intent = new Intent();


    }

    private void displayMessage(Profile profile){
        if(profile != null){
            textView.setText(profile.getName());
        }
    }

    @Override
    public void onStop() {
        super.onStop();
        accessTokenTracker.stopTracking();
        profileTracker.stopTracking();
    }

    @Override
    public void onResume() {
        super.onResume();
        Profile profile = Profile.getCurrentProfile();
        displayMessage(profile);
    }
}

Answer 1

To do the redirect, you can check if the user is logged and whether the token this same user has already expired. In this case, it would look like this below. See:

public void onSuccess(LoginResult loginResult) {
    AccessToken accessToken = loginResult.getAccessToken();
    Profile profile = Profile.getCurrentProfile();
    displayMessage(profile);

    boolean isLoggedIn = accessToken != null && !accessToken.isExpired();

    if(isLoggedIn){
      // aqui dentro você deve chamar sua activity.
    }   
}

Answer 2

Would that be?

   @Override
    public void onSuccess(LoginResult loginResult) {
        AccessToken accessToken = loginResult.getAccessToken();
        Profile profile = Profile.getCurrentProfile();
        displayMessage(profile);
        startActivity(getContext(), NovaActivity.class);
    }