Does Android support push registry?

[Yifei Huang]

Hi guys!

Does Android support push registry?

[Mark L. Murphy]

What is a "push registry"?

[Yifei Huang]

like push registry in J2ME which enables apps to set themselves up to be launched automatically, without user initiation. Activations could be inbound connections like: message-based (such as SMS), stream-based (such as TCP socket) or packet-based (such as datagrams).

[Mark L. Murphy]

They are called broadcast Intents in Android. Your application registers a BroadcastReceiver, either in the manifest XML or in Java, and will get control when the events occur.

[Yifei Huang]

Thanks a lot!
btw: do they buffer incoming data?

[Mark L. Murphy]

It's more that they are system events, not network events. So, you can wake up on an SMS, or a low-battery condition, or getting near some GPS-based location. Networking, however, is not handled this way -- more like JavaSE than JavaME.