详细解释：https://medium.com/@BladeCoder/kotlin-singletons-with-argument-194e...

The open annotation on a class is the opposite of Java's final: it allow...

Visibility Modifiershttps://kotlinlang.org/docs/reference/visibility-mod...

apply By definition, apply accepts a function, and sets its scope to tha...

There's no static keyword in Kotlin. If you want static access to certai...

Camera API The Camera class, which has been deprecated. We recommend usi...

自己动手，丰衣食足。需要： Manifest declarations Before starting development on your ...

本文是从官方文档里面提取了简要内容，整理在此。详细内容请访问官方网站。 Using existing camera apps Take phot...