"酷欧天气"JAVA版，基于郭霖KOTLIN版；采用MVVM架构实现，使用了Jetpack的LiveData和ViewModel组件。CoolWeather in Java, based on Luolin’s Kotlin version. It implements with MVVM pattern, and uses Jetpack components like LiveData and ViewModel. If you like it, don’t forget to star for me, thanks.