ライフサイクルコールバックのsuperについて、自分の実装の先に呼ぶか、後に呼ぶか - woshidan's blog
How to detect when your Android app has been backgrounded - Salesforce Engineering Blog
How to correctly measure the App Startup time on Android | Dipien
How to detect when your Android app has been backgrounded - Salesforce Engineering Blog
GitHub - smartnsoft/backgrounddetector-android: A simple component you can integrate into your Android app in order to detect if the app goes to background or foreground This version of the library has no