Data storage
Scoped Storage on Android 11
[https://proandroiddev.com/scoped-storage-on-android-11-2c5da70fb077]
[http://www.arvifox.com/2018/07/29/media/]
[http://www.arvifox.com/2017/06/20/data-storage/]
Permission
Permission in android 11
[https://joebirch.co/uncategorized/exploring-the-android-11-developer-preview-permission-changes/]