FacebookCallback.onCancel is getting called when trying to login using facebook sdk

Question

I have an Android app and I am trying to use Facebook's SDK (version 4.1.0) to get a token and log in. Here is my code:

public class LoginActivity extends Activity {
    private CallbackManager callbackManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        FacebookSdk.sdkInitialize(getApplicationContext());

        callbackManager = CallbackManager.Factory.create();
        LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                AccessToken accessToken = loginResult.getAccessToken();
                Log.v(TAG, "Facebook login was successful");
                String authToken = accessToken.getToken();
                // User authToken here:
            }

            @Override
            public void onCancel() {
                Log.v(TAG, "Facebook login was canceled");
            }

            @Override
            public void onError(FacebookException e) {
                Log.e(TAG, "Facebook login failed: " + e.getMessage());
            }
        });

        Button facebook_button = (Button) findViewById(R.id.fbButton);

        facebook_button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                LoginManager.getInstance().logInWithReadPermissions(getActivity(), Arrays.asList("public_profile"));
            }
        });

    }

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

The code switched to the Facebook app and back and OnActivityResult() is called. However, every time the callback method that is called is onCancel(). Note that I am not using the LoginButton provided by Facebook, and I have my own button (although I tried that approach and the result was the same). I double and triple checked my app ID and the keyhash generated by the app and they look correct too. So, I don't know what else may be wrong. Any help at this point is greatly appreciated.

Answer 1

yes i was facing the same issue, resolved it by using the below code just before login

 LoginManager.getInstance().logOut();