Android version support for push notifications

Need help for implementing PUSH notification in android. wanted to know from which android version, push notification will be supported. When i searched for the Android notification service in android, i saw C2DM which will be supported after android 2.2.

If it will be supported after 1.5, please let me know what are the options avail开发者_如何学Cable to achieve push notification for 1.5 and above.

Thanks in Advance Srinivasan

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For below 2.2, there is no native support in Android. You will have to use some third party push notification services like urbanship or mqtt described here

For a good explanation of google c2dm (native push support from google), see this.

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Actually, you could use WebORB to do data push from Java or .NET to Android (Native Java and AIR). Here is a link to more information and videos about using WebORB messaging with for Android.