Pressing Facebook Login button does nothing

问题

Here is how I implemented callback mechanism for FB login button:

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        FacebookSdk.sdkInitialize(getApplicationContext());
        AppEventsLogger.activateApp(this);
        setContentView(R.layout.activity_main);

        loginButton = (LoginButton)findViewById(R.id.login_button);

        callbackManager = CallbackManager.Factory.create();

        loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {

                Log.d("FB onSuccess 1", "");
            }

            @Override
            public void onCancel() {
                Log.d("FB onCancel 1", "");
            }

            @Override
            public void onError(FacebookException e) {
                Log.d("FB onError 1", "");
            }
        });
    }

When pressing button a spinner appear, starts, but the confirmation screen does not appear, and no log messages are filled into Activity Monitor. What is the problem?

回答1:

Try Adding this in your Activity :

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

}

来源：https://stackoverflow.com/questions/39266772/pressing-facebook-login-button-does-nothing