kotlin协程启动方式

* rememberCoroutineScope 

具体使用请看将 Kotlin 协程与生命周期感知型组件一起使用

例

private val mainScope:CoroutineScope = MainScope()

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    mainScope.launch(Dispatchers.Main) {
    withContext(Dispatchers.IO){

        }
    }      
}

override fun onDestroy() {
    mainScope.cancel()
    super.onDestroy()
}