i try to migrate to backendless 4.x and still can’t login with facebook, the backendless user is always returned by null.
i was using the deprecated method which in 3.0 documentation so i changed to the new method which take access token as a parameter but unfortunately both of the methods return the backendless user in the callback with null and below is my code please comment if u can help…
String[] map_facebook = getResources().getStringArray(R.array.login_map_facebook_fields);
String[] map_backendless = getResources().getStringArray(R.array.login_map_backendless_fields);
if (map_facebook.length != map_backendless.length)
throw new IllegalStateException(“R.array.facebook_login_permissions’s length must be equal to R.array.fb_login_map_backendless_fields’ length.”);
final Map<String, String> facebookFieldsMappings = new HashMap<>(map_facebook.length);
final List<String> facebookPermissions = Arrays.asList(getResources().getStringArray(R.array.facebook_login_permissions));
for (int i = 0; i < map_facebook.length; i++)
facebookFieldsMappings.put(map_facebook, map_backendless);
LoginManager.getInstance().logInWithReadPermissions(this,facebookPermissions);
LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
Toast.makeText(ActivityLogin.this,loginResult.getAccessToken().getToken(),Toast.LENGTH_SHORT).show();
Backendless.UserService.loginWithFacebookSdk(loginResult.getAccessToken().getToken(),facebookFieldsMappings,new AsyncCallback<BackendlessUser>() {
@Override
public void handleResponse(BackendlessUser user) {
Log.i(“BaseCustomUser”, “user logged in successfully, retrieving fresh user”);
Log.i(“User”,user.getUserId()+"");
// retrieving fresh user, since the user above is polluted with some extra attributes
Backendless.UserService.findById(user.getUserId(), new AsyncCallback<BackendlessUser>() {
@Override
public void handleResponse(BackendlessUser result) {
Backendless.UserService.setCurrentUser(result);
CustomUser customUser = new CustomUser(result);
Log.i(“BaseCustomUser”, "successfully retrieved fresh user: ");
redirectAfterLoggedIn(customUser);
}
@Override
public void handleFault(BackendlessFault fault) {
Log.w(“BaseCustomUser”, "failed to retrieve fresh user: " + fault.toString());
}
});
}
@Override
public void handleFault(BackendlessFault fault) {
Log.e(“BaseCustomUser”, "user failed to log in: " + fault.toString());
}
},true);
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException error) {
}
});