Adding Android-specific code to run Dart code in the background

In Android, there is the concept of Services, which are the ideal way of running application code in the background, independently of the main application execution. So, basically, we need to create a Service method, bind the new background isolate, and run.

Read the official documentation about Android Services: https://developer.android.com/reference/android/app/Service.

The HandsOnBackgroundProcessPlugin class

The first step is to set up the plugin, just like we already did in Chapter 9, Developing Your Own Flutter Plugin. It starts with an implementation of the static registerWith method that notifies the Flutter engine with the existence of the plugin instance...