AndroidStudyMemo＝Android Cloud to Device Messaging (C2DM)

Android Cloud to Device Messaging (C2DM) is a service that was introduced in Android 2.2.

This service provides developers with the ability to initiate application events remotely, effectively

waking up the application when needed instead of requiring each application to implement

a background service itself (improving battery life). Instead, the C2DM service runs on

the device and is shared by interested applications. Developers send messages from remote

servers through to the device's C2DM service, which delivers the message to the target

application.

 

For devices running 2.2 and higher, consider if the C2DM solution is more

appropriate for your application than services.

 

For more information about Cloud to Device Messaging, see the Google Project

website: http://code.google.com/android/c2dm/.