ios-login

Facebook iOS LoginKit framework

Sample app

Link

Install Instructions

Gradle

Add the following dependency to your build.gradle:

dependencies {
   ... other dependencies ...
   compile "org.robovm:robopods-facebook-ios-login:$robopodsVersion"
}

Maven

Add the following dependency to your pom.xml:

<dependency>
   <groupId>org.robovm</groupId>
   <artifactId>robopods-facebook-ios-login</artifactId>
   <version>${robopods.version}</version>
</dependency>

Code Examples

Login Button

Use the predefined Facebook login button to allow users to authenticate in your app.

Add button

To add a Facebook-branded login button to your app add the following code snippet to a view controller:

@Override
public void viewDidLoad() {
    super.viewDidLoad();

    FBSDKLoginButton loginButton = new FBSDKLoginButton();
    // Optional: Place the button in the center of your view.
    loginButton.setCenter(getView().getCenter());
    getView().addSubview(loginButton);
}

Listen for events

You can optionally listen for events like login and logout. Just set the delegate on the button:

loginButton.setDelegate(new FBSDKLoginButtonDelegateAdapter() {
    @Override
    public void didComplete(FBSDKLoginButton loginButton, FBSDKLoginManagerLoginResult result, NSError error) {
        if (error != null) {
            log("Failed to login: " + error);
        } else if (result.isCancelled()) {
            log("User cancelled login!");
        } else {
            if (!result.getGrantedPermissions().containsAll(readPermissions)) {
                log("Failed to login! Permissions declined: " + result.getDeclinedPermissions());
            } else {
                log("Successfully logged in!");
            }
        }
    }

    @Override
    public void didLogOut(FBSDKLoginButton loginButton) {
        // User did logout.
    }

    @Override
    public boolean willLogin(FBSDKLoginButton loginButton) {
        // User will logout. Return false if the login should be aborted.
        return true;
    }
});

Ask for permissions

Your app may requires special permissions. You can specify them directly on the button instance:

loginButton.setReadPermissions(Arrays.asList("public_profile", "email", "user_friends"));

Try it out!

Add the login button and run your app. When you tap it you should see the login dialog. After logging in, the button should change to Logout. Tap it again and you should be able to logout.

Having trouble?

• Make sure you have setup the Facebook SDK as described here: Link
• Make sure you have setup your app in your Facebook dashboard: Link
• Check your logs for any errors, like network failures.

Next steps

• Manage the authenticated user, read their profile information and check the login status: Link
• Take a look at our sample app: Link
• Read the official Facebook documentation: Link

Custom Login

The FBSDKLoginManager handles everything you need for custom login and logout. If you want to use a custom button to login or you are using libGDX, read on.

Login and Logout

Create a new instance of FBSDKLoginManager and store it as a member variable:

loginManager = new FBSDKLoginManager();

To login use either logInWithReadPermissions or logInWithPublishPermissions:

loginManager.logInWithReadPermissions(readPermissions,
    (result, error) -> {
        if (error != null) {
            log("Failed to login: " + error);
        } else if (result.isCancelled()) {
            log("User cancelled login!");
        } else {
            if (!result.getGrantedPermissions().containsAll(readPermissions)) {
                log("Failed to login! Permissions declined: " + result.getDeclinedPermissions());
            } else {
                log("Successfully logged in!");
            }
        }
    });

Logging out is very easy:

loginManager.logOut();

If you need to request additional permissions just call logInWithReadPermissions or logInWithPublishPermissions with the additional permissions again.

Try it out!

Add the login code to your app and trigger it. If you added log statements to the login callback you should see them.

Having trouble?

• Make sure you have setup your app in your Facebook dashboard: Link
• Check your logs for any errors, like network failures.

Next steps

• Manage the authenticated user, read their profile information and check the login status: Link
• Take a look at our sample app: Link
• Read the official Facebook documentation: Link

User management

Get profile info and current access token.

Access Token

You can get the current access token with the following code snippet:

FBSDKAccessToken accessToken = FBSDKAccessToken.getCurrentAccessToken();

The returned access token will be null if no user is logged in. This makes it very easy to check if the user is logged in:

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

The FBSDKAccessToken gives you lots of useful information, like permissions, declined permissions, userID, tokenString...

String userID = accessToken.getUserID();
Set<String> permissions = accessToken.getPermissions();
String tokenString = accessToken.getTokenString();

User Profile

If you need more information from the current user, you can use the FBSDKProfile:

FBSDKProfile profile = FBSDKProfile.getCurrentProfile();

It may be null if no authenticated user is available.

Use the FBSDKProfile to get information, like name, linkURL, imageURL...

String firstName = profile.getFirstName();
String lastName = profile.getLastName();
String name = profile.getName();
NSURL link = profile.getLinkURL();

Having trouble?

• Make sure you have setup your app in your Facebook dashboard: Link
• Check your logs for any errors, like network failures.

Next steps

• Take a look at our sample app: Link
• Read the official Facebook documentation: Link