Demo best-practice coroutine calling convention for SDK methods that use Context

[ugoamanoh]

Goal

Coroutines don't fix every asynchrony problem that android may encounter but they do provide ways of working with the component lifecycle.

Our demo-app and sample code should display the proper way to build coroutine contexts that includes lifecycle-aware jobs and intentional exception handler.

References

• https://kotlinlang.org/docs/reference/coroutines/exception-handling.html#coroutineexceptionhandler
• https://github.com/Kotlin/kotlinx.coroutines/blob/master/ui/coroutines-guide-ui.md

Acceptance

• A coroutine exception handler is created in demoapp
• Exception handler is added to coroutine context
• Coroutine context is canceled on activity destroy - or, even better on ViewModel release
• All Suppress("LabeledExpression") annotations that reference activity instances are removed from demoapp

Testing

TBD