问题
Iam making an android application similar to skype what i want to know is how to synchronize android contacts with my application so that the numbers which are registered with my application and are also in my android contacts got a symbol. For example in your contact list you see a skype icon or whatsapp icon with those contacts who are registered with skype or whats app.Anyone can guide me what to do.thanks!
回答1:
Please refer to the android.provider.ContactsContract class. Since it is very broad, I recommend you to first take a look at the SDK description of ContactsContract.RawContact. There you will find description with code snippets for basic operation on Contacts.
Also, take a look at the Android SDK code examples:
Android Sample - ContactOperations
来源：https://stackoverflow.com/questions/11622909/contacts-sync-with-my-own-application-like-skype-or-whatsapp