To learn how to integrate Sign in with Apple into your Android app using Identity Platform, see this guide.
Apple’s configuration process
On Apple’s developer website:
Just stick to the guidelines over at Sign in with Apple on the Web Configuration. As an example:
The process of registering a Return URL looks like this:
https://project-id.firebaseapp.com/ /auth/handler
You can verify your domain by temporarily hosting a file at the following URL:
https://project-id.firebaseapp.com/.well-known/apple-developer-domain-association.txt
Keep in mind your Apple team ID and Services ID; you’ll need these in the following step.
Make an Apple ID login using a private key. In the following part, you’ll need the key’s ID and the key itself.
Use the following address to configure your Identity Platform project to use Apple’s private email relay service, so that you can send emails on behalf of your users.
noreply@project-id.firebaseapp.com
If your app supports it, you can also use a premade email template.
Complying with Apple’s anonymized data requirements
Apple allows its customers to conceal personal information, such as their email address. By selecting this option, Apple will provide the user with a hidden email address at the privaterelay.appleid.com domain.
If your software uses Apple IDs that have been anonymized, it must follow Apple’s developer guidelines and agreements. Users’ permission is required before any PII is linked to an anonymous Apple ID. Activities that may entail PII include, but are not limited to:
Joining an identifiable email address with an otherwise anonymous Apple ID.
Synchronizing a contact number with a hidden Apple ID, or vice versa
Joining a Facebook or Google account with an Apple ID that has been stripped of its personal information, or vice versa.
Read the Apple Developer Program License Agreement if you want more details about using your Apple developer account.
Also Read: Find My iPhone Login Process to Track My Device
Configuring Apple as a provider
Apple must be set up as an identifier supplier.
In the Google Cloud Platform, select Identity Providers.
View the list of Identity Providers here.
You can add a service provider by selecting the corresponding button.
Apple should be the one you pick.
Choose Android as the Platform.
Put in your Services ID, Apple team ID, Key ID, and Private key.
Click Authorized domains and then Add domain to register the domains used by your app. When using a computer for development, localhost is always on.
Select Android under Configure your app. Use this code snippet to set up the Identity Platform Client SDK in your app.
A save button is available.
Signing in users with the Client SDK
OAuthProvider.new with ID apple.com creates a new instance of the provider object.
Java \sKotlin
Provider: OAuthProvider.Builder = OAuthProvider.newBuilder(“apple.com”); Scopes: OAuthOptional. Scopes outline the specific information you wish to obtain from Apple. Specific scopes may be necessary for more sensitive data. When “One account per email address” is turned on, Identity Platform automatically asks for access to “email” and “name.”
Java \sKotlin
Scopes ArrayListListString> = new () For example: provider.setScopes(scopes); add(“email”); add(“name”);
Optional: Authentication processes should be localised. You have the option of using the device’s default language or selecting one of your own choosing:
Also Read: Gmail Login Different User: A Step by Step Guide to Login
Java \sKotlin
Replace the English authentication screen with a French one.
provider.
Using Identity Platform, addCustomParameter(“locale”, “fr”); Log in the user.
Please be aware that Identity Platform will take over your UI and redirect users to a separate Custom Chrome Tab once they have successfully logged in. Since the OnSuccessListener and OnFailureListener will immediately detach once the authentication operation begins, you shouldn’t make any references to your Activity within them.
Call startActivityForSignInWithProvider() to see whether you get a response.
Java \sKotlin
TaskAuthResult> mAuth = FirebaseAuth.getInstance(); If (pending!= null) then (mAuth.getPendingAuthResult()) The code: pending.addOnSuccessListener(new OnSuccessListenerAuthResult>) () Log.d(TAG, “checkPending:onSuccess:” + authResult); / Get the user profile using authResult.getUser() and authResult.getAdditionalUserInfo(), and the Apple ID token with authResult.getCredential(). Add a listener for failures with addOnFailureListener(new OnFailureListener() @Override public void onFailure(@NonNull Exception e)).
Otherwise, the following would be executed: Log.w(TAG, “checkPending:onFailure”, e); otherwise To do this, type Log.d(TAG, “pending: null”):
During the authentication process, the system will reclaim your Activity, which is temporarily put on hold when you sign in. By first verifying whether or not the desired outcome does not already exist, duplicate registrations can be avoided.
Start the activity for signing in with the provider if there is no outstanding result.
Java \sKotlin
Add an on-success listener to the mAuth object using the following code: mAuth.startActivityForSignInWithProvider(this, provider.build()).addOnSuccessListener( new OnSuccessListenerAuthResult>) () Replace public null with @Override onSuccess in public view (AuthResult authResult) / Login complete!
FirebaseUser user = authResult.getUser(); //… ).addOnFailureListener( new OnFailureListener() @Override public void onFailure(@NonNull Exception e) Log.d(TAG, “activitySignIn:onSuccess:” + authResult.getUser()); Apple, unlike many other identity providers, does not include a photo URL in the form of Log.w(TAG, “activitySignIn:onFailure”, e); );.
When a user instals your app but declines to provide their real email address, Apple will generate a new email address on the user’s behalf. xyz@privaterelay.appleid.com is the format of this email. Depending on how the private email relay service is set up, Apple will either delete or transmit messages sent to the disguised address to the user’s actual inbox.
Apple only provides apps with access to user data (such as display names) upon the user’s initial sign in. Typically, this information is stored by Identity Platform, and may be retrieved with firebase.auth().currentUser.displayName in subsequent sessions. However, if you had already integrated Apple’s login system into your app before connecting with Identity Platform, no user data will be available.
So, What Happens Next?
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