Sync Android phone with a third-party server

Question

Do you know if the Android SDK provides some classes, interfaces or methods to help developers to create a mechanism in order to synchronize application data between the phone and a third-party server ? Or should we build this mechanism from scratch ?

I've heard about C2DM for Push notification but it is available only from Android 2.2 and my application must support Android 2.1.

Answer 1

Android does synchronization between data stored locally in a content provider and a remote service by means of a SyncAdapter.

Here you have a full example and some docs.