Android broadcast receiver running always

Question

How do I make a broadcast receiver which runs always, from the very start of the device? Is this possible without starting the application where it is declared?

If not I guess I would have to start my application when the device starts. But this probably adds to much overhead and it's unwanted.

I want this always runnning broadcast receiver in order to listen always for c2dm notifications. These should notify the user that there are new messages in the application.

Answer 1

如果您使用“意图过滤器”将“ BroadcastReceiver”添加到“清单”中以侦听特定意图，则“接收器”在安装时将处于活动状态。

Answer 2

what do you mean "run always" ?

if you need something to be alive for a long time , and from the OS bootup , you need to :

1. let the app to be installed only on the internal storage (otherwise it won't work).

2. set the broadcast receiver to listen to the boot intent .

3. upon receiving the boot intent, start a service and there listen to the intent you wish to listen to.