As a result, people do not have to enter their credentials, if they already logged into Facebook in their Chrome browser. Once we add all the required elements our AndroidManifest.

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When someone clicks on the button, the login is initiated with the permissions set in the LoginManager. LoginButton like as shown below.

Tutorial on how to add facebook login to your Android App

Now we need to add the following code details in MainActivity. By using CallBackManager.

Following is the code to add callback manager and setting read permissions to read user details from facebook profile in activity file. To respond to a login result, we need to register a callback with either LoginManager or LoginButton. In case, if we register the callback with LoginButton , we don't need to register the callback on Login manager.

We need to add the callback to our activity or fragment's onCreate method like as shown below.

Android Facebook Integration and Login Tutorial | Numetriclabz

The onActivityResult forward the login results to the callbackManager created in onCreate method. Intent; import android. AppCompatActivity; import android. Bundle; import com. CallbackManager; import com. FacebookCallback; import com. FacebookException; import com. LoginResult; import com. When we click on Continue with Facebook button, it will show popup to login with Facebook, once you logged in successfully we will get the logout button like as shown below.

Android Facebook Integration (Login) with Examples

Android Facebook Integration Login with Examples. Once we are done with creation of App, our App ID will be shown like as shown below. Thanks to Register with tutlane. Lost Password? Sign In. Dont have an Account yet?

Facebook Login for Android - Quickstart

Sign Up. Re-enter Password. Already have an account? Login Please log in to Facebook to create apps or register as a developer. Log in to Facebook. Download the Facebook App Download the Facebook app by clicking the button below. Download Facebook for Android.

Choose the method you prefer with the following button. Also, add FacebookActivity to your Android manifest. Add the following: ApplicationId" android: FacebookActivity" android: CustomTabActivity" android: When someone clicks on the button, the login is initiated with the permissions set in the LoginManager.

The button follows the login state, and displays the correct text based on someone's authentication state. LoginButton android: Register a Callback Now create a callbackManager to handle login responses by calling CallbackManager. If you are adding the button to a Fragment you must also update your activity to use your fragment.

You can customize the properties of Login button and register a callback in your onCreate or onCreateView method. Style and permissions on the LoginButton. For example: To respond to a login result, you need to register a callback with either LoginManager or LoginButton. If you register the callback with LoginButton , don't need to register the callback on Login manager.

You add the LoginManager callback to your activity or fragment's onCreate method: If login succeeds, the LoginResult parameter has the new AccessToken , and the most recently granted or declined permissions. You don't need a registerCallback for login to succeed, you can choose to follow current access token changes with the AccessTokenTracker class described below. Finally, in your onActivityResult method, call callbackManager. The FacebookSDK saves this data in shared preferences and sets at the beginning of the session. You can see if a person is already logged in by checking AccessToken.