How can I verify account (say, Apple ID) user entered in iPhone app?

Question

I wrote an app for Android which uses Google account registered in phone. App lists account and let user pick one for user id. Reasons for this are:

• No need to ask password.
• I want unique user id. Other can't use someone-else's id without knowing it's password.
• User id should be human readable. So Google account is very suitable.

This scheme works very well in Android. And now I'm investigating how can I do similar thing in iPhone.

First I searched the way to list Apple ID in iPhone. I learned it's impossible in iOS shortly. Now I want to know how can I verity some account (Apple ID will be fine) user entered.

Use case for this is like:

• Run app.
• App asks user to enter Apple ID, but no password.
• App verifies that Apple ID is valid and use that as user id, sending that to server.
• The other user can communicate by referencing that id.

Thanks in advance.

Answer 1

There’s no support in iOS for using Apple ID to authenticate the user in your own apps.

In iOS 6, you can use Facebook and Twitter (and in China, Sina Weibo) with Accounts.framework.

Answer 2

Apple doesn't offer an accessible SDK to interact with Apple IDs. At least to the best of my knowledge. I don't think you are going to be able to replicate the functionality that you have on Android in iOS.