(The eighth episode of the Android Development Video Tutorial: Android uses static variables to transfer data. This series of videos mainly introduces the software development of the Android platform. Each episode lasts about half an hour. The resolution is 1024x768 in AVI format. I hope you can enjoy it. This series of videos is updated about five times a week. This series of tutorials will be learned by developers who have a certain foundation. More importantly, they will explain the knowledge points in the Android development process through projects. This document includes the following annexes:)