(The content of the Android Development Video Tutorial: This series of videos mainly introduces the software development of the Android platform. Each episode lasts about half an hour. It is in MP4 format with a resolution of 1024x768. I hope you can enjoy it. This series of videos is updated two to three times a week! Java4Android content introduction: Solution: This course is designed for friends who want to become Android developers but have no programming experience. It can help you quickly understand Java programming technology. This document includes the following annexes:)