Authentication on your Android App

I am developing an Android App where I require a user to authenticate his session before using the app. One way is to store a user name and password by asking him to开发者_StackOverflow中文版 register on the app and then use that to authenticate him. But i was looking to do something else, maybe use an OpenId account to authenticate or Opensoial or something like Facebook Connect. Any Suggestions and comments? thanks for you help.

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Using OpenID is a great idea in fact. You can use the OpenID4Java library. As you can read here, someone has modified that project in order to make it Android compatible.

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I know this is an old question but i found this while asking a newer question.

Just an idea but have you looked at the account manager? What version of android are you targeting?
The sample sync adapter example (http://developer.android.com/resources/samples/SampleSyncAdapter/index.html) uses the account manager (http://developer.android.com/reference/android/accounts/AccountManager.html)
It looks like a more secure way of using credentials on a native android client because you don't have to store the password at all locally in your app.