How to add a contact by API?

Is there any class about the operation of the contact?

how to add a contact with API like the way in windows mobile?开发者_运维问答

SaveEmailAddressTask and SavePhoneNumberTask are not useful.

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The only APIs that the framework provides (at the moment at least) are the two tasks that you have already identified. To be honest, I wouldn't be surprised if it stays that way, too, in order to prevent malicious applications from littering the user's contacts.