Question

我在尝试使用RxJava2和Retrofit2（在Kotlin中）检索一些Api数据时遇到了Android应用程序的问题。一旦我执行了呼叫，屏幕就会变黑，应用程序就不再响应了，没有任何日志消息。

我正在使用的通话网址如下：

api/apartments?projection={"id":1,"address":1}

此次通话的服务界面如下：

    @GET("api/apartments?projection={\"id\":1,\"address\":1}")
    fun getAllApartments(@Header(AUTHORIZATION) auth: String): Single<List<APTLIST>>

这是我执行呼叫的方式：

  override fun getAllApartments(): Single<List<APTLIST>> = retrofit.create(ApartmentsService::class.java).getAllApartments("$BEARER$token")

这就是我调用函数的方式：

getAllApartmentsUseCase.getAllApartments()
    .subscribe(
        {
          apartments.clear()
          apartments.addAll(it)
          view.showApartments(apartments)
        },
        { println(it.message) }
    )

此调用适用于Postman，结果如下：

[
  {
    "_id": "591ecaca861a528a5b4c3d90",
    "id": "ROC 03"
  },
  {
    "_id": "591a0fb2861a528a5b4c3d60"
  },
  {
    "_id": "58be94d484c4b0a468fb93e0",
    "id": "CAN 2.3",
    "address": "Els Refugis"
  }
]

Answer 1

我猜你是在主线程中进行网络通话。奇怪的是，你得到像ANR而不是android.os.NetworkOnMainThreadException。

getAllApartmentsUseCase
    .getAllApartments()

    .subscribeOn(Schedulers.io())  //scheduler in which observable will execute
    .observeOn(AndroidSchedulers.mainThread()) //scheduler in which subscriber's methods will be called

    .subscribe(/*subscriber*/)

https://medium.com/upday-devs/rxjava-subscribeon-vs-observeon-9af518ded53a

数据请求时RxJava2 + Retrofit黑屏

1 个答案: