Using cordova to extract the resources instead of using R:
https://stackoverflow.com/questions/35511791/adding-drawable-resource-using-cordova#35557064
https://ourcodeworld.com/articles/read/368/how-to-add-and-retrieve-a-resource-string-in-a-cordova-plugin-for-android
https://stackoverflow.com/questions/26116955/cordova-plugin-android-activity-accessing-resources


Integrate this library for iOS caching:
https://github.com/vitoziv/VIMediaCache
Derived from:
https://gist.github.com/anonymous/83a93746d1ea52e9d23f
Source article:
http://vombat.tumblr.com/post/86294492874/caching-audio-streamed-using-avplayer

Other implementations:
https://medium.com/@vdugnist/how-to-cache-avurlasset-data-downloaded-by-avplayer-5400677b8b9e
https://github.com/vdugnist/DVAssetLoaderDelegate

Consuming apps might need:
android {
  compileOptions {
          sourceCompatibility JavaVersion.VERSION_1_8
          targetCompatibility JavaVersion.VERSION_1_8
  }
}
I mean, this build gradle might need it too..


This is another way to fix that icon issue:
actually we could do this, instead of hardcoding the value. but meh.
https://github.com/oliviercherrier/mauron85-background-geolocation-example-ionic2
https://github.com/mauron85/cordova-plugin-background-geolocation/issues/553
https://github.com/apache/cordova-android/issues/678
but not ideal