How to communicate from BroadcastReceiver to Activity after instantiating repeating alarm

I am creating a recurring alarm, which I want to be able to communicate with the Activity that called it. I can send Intent data over to the BroadcastReceiver but getting information back from the Activity at the time the BroadcastReceiver runs is not immediately clear. I need the BroadcastReceiver to poll i开发者_如何学Pythonnformation from the Activity that called it.

I am creating a recurring alarm, which I want to be able to communicate with the Activity that called it.

It is rather likely that "the Activity that called it" no longer exists, because it has been destroyed.

I need the BroadcastReceiver to poll information from the Activity that called it.

No, you don't. You need your Activity and your BroadcastReceiver to use a shared persistent data model, such as a database or file, possibly cached via static data members.