DriveChain Activity Container

This component keeps track of your application’s currently visible activity in a container that can be used by background services.

This is particularly useful for background services that need to conditionally run code like notifications based on what the user is currently looking at.

Installation

Add the dependency to your build.gradle file

    compile "com.github.InkApplications.DriveChain:activity-container:2.+"

Add the following module to your application component:

@Component(modules = arrayOf(
    ActivityContainerModule::class
))
interface ApplicationComponent {
  // ...
}

Usage

Then you can run code only when a certain activity is displayed:

fun onMessageReceived(message: String) {
    activityContainer.onlyFor(TestActivity::class) { testActivity ->
        testActivity.showMessage(message)
    }
}

or access the current activity directly:

fun onMessageReceived(message: String) {
    if (activityContainer.activity == null) {
        // Application not visible right now
    }
}