2020 Sep. 20. 2020 Jul. 24. 出典元 https://gumiossan.hatenablog.com/entry/2020/03/06/002802 https://github.com/Gumio/exo-sample-app https://qiita.com/niusounds/items/cce4ff69f5911908259b https://codelabs.developers.google.com/codelabs/exop…