如何在 Kotlin 1.3 中更新协程中的 UI

To answer your immediate question, you must simply launch the coroutine in the correct context:

val call = ApiClient.getInterface().getRoute(request.getURL())
GlobalScope.launch(Dispatchers.Main) {
    try {
        success?.invoke(call.await())
    } catch (t: Throwable) {
        fail?.invoke(t)
    }
}

然而，这只是冰山一角，因为您的方法使用协程的方式是错误的.它们的主要好处是避免了回调，但您正在重新引入它们.您使用GlobalScope也侵犯了structured concurrency最佳实践，而GlobalScope不打算用于生产.

Apparently you already have an async API that gives you a Deferred<RoutesResponse> that you can await on. The way to use it is as follows:

scope.launch {
    val resp = ApiClient.getInterface().getRoute(request.getURL()).await()
    updateGui(resp)
}

你可能会因为我建议在你必须执行可挂起代码的每个图形用户界面回调中都有一个launchGUIlaunch挡路而苦恼，但这实际上是推荐的使用这个特性的方式.它与编写Thread { ... my code ... }.start()是严格平行的，因为launch挡路的内容将与其外部的代码并发运行.

上面的语法假设您有一个scope变量，它实现CoroutineScope.例如，它可以是您的Activity:

class MyActivity : AppCompatActivity(), CoroutineScope by MainScope {

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

The MainScope delegate sets the default coroutine dispatcher to Dispatchers.Main. This allows you to use the plain launch { ... } syntax.