Android Application Login with Facebook is not working with Facebook App installed

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This code is working well when I uninstalled the Facebook App but didn't work with Facebook App installed. I'm using Facebook SDK 4.0.

This is my code

package com.example.nhp04.gqfood;
import com.facebook.AccessToken;
import com.facebook.AccessTokenTracker;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import com.facebook.Profile;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;

public class Login extends AppCompatActivity implements Animation.AnimationListener {

private String info = "";
private LoginButton loginButton;
private CallbackManager callbackManager;
private AccessTokenTracker tracker;

    protected void onCreate(Bundle savedInstanceState) {
        callbackManager = CallbackManager.Factory.create();
loginButton = (LoginButton)findViewById(;

loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        public void onSuccess(LoginResult loginResult) {
            AccessToken accessToken = loginResult.getAccessToken();
            Profile profile = Profile.getCurrentProfile();
            info = ("User ID: " + 

    loginResult.getAccessToken().getUserId() + "\n" + "Auth Token: " + loginResult.getAccessToken().getToken());

                public void onCancel() {
                    info = ("Login attempt canceled.");

                public void onError(FacebookException e) {
                    info = ("Login attempt failed.");
            tracker = new AccessTokenTracker() {
            protected void onCurrentAccessTokenChanged(AccessToken oldAccessToken, AccessToken currentAccessToken) {


this function for checking login

public boolean isLoggedIn() {
    AccessToken accessToken = AccessToken.getCurrentAccessToken();
    return accessToken != null;

this on Resume and on Stop methods

protected void onResume() {
    if (isLoggedIn()){
        Intent home = new Intent(this, home.class);

protected void onStop() {

And this is my onActivityResult

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    callbackManager.onActivityResult(requestCode, resultCode, data);
    if (resultCode == RESULT_OK) {
        Intent home = new Intent(this, home.class);
    } else {
        Toast.makeText(getApplicationContext(), "Unable to login please check your internet connection",Toast.LENGTH_LONG).show();

where is your onActivityResult() code. In onActivityResult() you need to use callbackmanager. User below code:

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


above will work both in fragment/activity. Make sure you have

1. facebook app installed on your testing device
2. In facebook developer account check whether you have mentioned 
- correct package name : refer your android project manifestfile.xml

- check that have you mentioned correct launcher class
- Check that you have given correct debug/release hash key

3. Cross check your facebook application id and that mentioned in your manifestfile.xml facebook meta data are same

In your code change below

create you callbackmanager after setContentView(...);

change it to below FacebookSdk.sdkInitialize(getApplicationContext()); AppEventsLogger.activateApp(this); setContentView(R.layout.activity_login); callbackManager = CallbackManager.Factory.create();

Remember if this is with you facebook issue then your problem lies within this dont waste time in searching other thing. Also put log in failure method in callback of facebook sdk.

Post comment if you still have problem

Android Application Login with Facebook is not working with , Check out the bottom of step 4:​started/facebook-sdk-for-android/3.0/. If you have not entered your  setting>>account setting>>app>>youer App >> remove. after remove youer app it uninstall your app.and reinstall it and check login with facebook is working or not.

you can remove your app in your facebook app. like you can open facebook app in go setting>>account setting>>app>>youer App >> remove . after remove youer app it uninstall your app .and reinstall it and check login with facebook is working or not.

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Please change your facebook sdk version, after you clean and rebuild your application it will work

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if you're getting an error message that looks like this: Error

Invalid key hash. The key hash "...5GAvm/gHi..." does not match any stored key hashes. Configure your app key hashes at

then copy the hash key provided in the error message and replace the old one with it and try again with the Facebook app installed on your device

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Tutorial on how to add facebook login to your Android App, Bug Report If the Facebook app is installed (enabled) on the Android device, the Login button fails to log the user in on some devices. Facebook Login for Android - Quickstart. The Facebook SDK for Android enables people to sign into your app with Facebook Login. When people log into your app with Facebook they can grant permissions to your app so you can retrieve information or perform actions on Facebook on their behalf.

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