Facebook login Android application does not work with Facebook application installed

Question

This code works well when I uninstalled the Facebook application , but did not work with the installed Facebook application. I am 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) { super.onCreate(savedInstanceState); FacebookSdk.sdkInitialize(getApplicationContext()); callbackManager = CallbackManager.Factory.create(); setContentView(R.layout.activity_login); loginButton = (LoginButton)findViewById(R.id.login_button); loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() { @Override 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()); } @Override public void onCancel() { info = ("Login attempt canceled."); } @Override public void onError(FacebookException e) { info = ("Login attempt failed."); } }); System.out.println(info); tracker = new AccessTokenTracker() { @Override protected void onCurrentAccessTokenChanged(AccessToken oldAccessToken, AccessToken currentAccessToken) { } }; tracker.startTracking(); } } 

this function to verify entry

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

this is according to the methods Resume and on Stop

 @Override protected void onResume() { super.onResume(); if (isLoggedIn()){ Intent home = new Intent(this, home.class); startActivity(home); } } @Override protected void onStop() { super.onStop(); tracker.stopTracking(); finish(); } 

And this is my onActivityResult

 @Override 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); startActivity(home); } else { Toast.makeText(getApplicationContext(), "Unable to login please check your internet connection",Toast.LENGTH_LONG).show(); } } 

Answer 1

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

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

above will work as 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 a callbackmanager after setContentView(...) ;

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

Remember, if this is a problem with you on facebook, then your problem is not to waste time looking for another thing. Also add a log failure method in the facebook sdk callback.

Post a comment if you still have a problem

Answer 2

You can delete your application in your facebook application. how can you open facebook app in go setup → account setup → app → youer app → remove. after uninstalling youer application, uninstall your application. and reinstall it and check that facebook login is working or not.

Answer 3

Please change the version of your photo album on facebook, after you clean and rebuild the application, it will work