摘要：
A thread is a thread of execution in a program. The Java Virtual Machine allows an application to have multiple threads of execution running concurren 阅读全文
摘要：
MVVM 框架绕不开ViewModel。 Model, View在Android中都有很明确的对应，而ViewModel是一种基于Android架构组件形成的特定模式。 LiveData LiveData is an observable data holder class. Unlike a re 阅读全文