Android coroutines处理异常

Question

在我的应用程序里。我正试图使用Kotlin Coroutines发送网络请求。我分析了一些情况下的响应和抛出异常。下面是代码：

class ProxyErrorInterceptor : Interceptor {

    override fun intercept(chain: Interceptor.Chain): Response {
        val request = chain.request()
        val response = chain.proceed(request)
        val bodyString = response.body()?.string()
        when (response.code()) {
            HttpURLConnection.HTTP_OK -> {
                val error = Gson().fromJson(bodyString, BusinessModel::class.java)
                if (error.errorCode != null) {
                    throw BusinessDataException(error.errorCode, error.errorMessage)
                }
            }
            HttpURLConnection.HTTP_INTERNAL_ERROR -> {
                val error = Gson().fromJson(bodyString, BusinessModel::class.java)
                if (error.errorCode != null) {
                    throw BusinessDataException(error.errorCode, error.errorMessage)
                }
            }
        }
        return response.newBuilder()
                .body(ResponseBody.create(response.body()?.contentType(), bodyString)).build()
    }
}

此拦截异常。

fun getAccounts() {
    try {
        val myJob = GlobalScope.launch(Dispatchers.IO) {
            val response = interactor.getAccounts()
            launch(Dispatchers.Default) {
                data.postValue(mapper.mapAccountList(response))
            }
        }
    } catch (e: Exception) {
        Log.d("Проверка", e.message)
    }
}

fun getAccounts() {
    val myJob = GlobalScope.launch(handler) {
        val response = interactor.getAccounts()
        launch(Dispatchers.Default) {
            loadingStatus.progress.set(false)
            data.postValue(mapper.mapAccountList(response))
        }
    }
}

private val handler = CoroutineExceptionHandler { _, exception ->
    error.postValue(Any())
    loadingStatus.progress.set(false)
    when (exception) {
        is BusinessDataException -> {
            Log.d("Check", exception.message)
        }
        else -> {
            loadingStatus.hasError.set(true)
            loadingStatus.textError.set(exception.message)
        }
    }
}

logcat中的此异常消息

06-03 17:18:01.012 237 96-24010/ru.mtsbank.dbosme e/androidruntime：致命异常：OkHttp调度程序流程:ru.mtsbank.dbosme,pid:23796 java.lang.错误:ru.mtsbank.dbosme.exceptions.businessDataException:www.cantsbank.dbosme.在java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1119)在java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:588)在java.lang.thread.run(threadpoolexecutor.java:818)由:ru.mtsbank.dbosme.exceptions.businessdataexception:businessdataexception:businessdataexception在ru.mtsbank.dbosme.data.web.interceptors.proxyerrorinceptor.incept(proxyerrorinceptor.kt:27)在OKHTTP3.internal.http.realinceptorchain.proce(realinceptorchain.java:147)在OKHTTP3.internal.http.realinceptorchain.proce(realinceptorchain.java:121)在ain.java:121)在OKHTTP3.logging.HttpLoggingInterceptor.Interceptor.java:211)在OKHTTP3.internal.http.realInterceptorchain.proce(realInterceptorchain.java:147)在OKHTTP3.internal.http.realInterceptorchain.proce(realInterceptorchain.java:121)在OKHTTP3.internal.http.realInterceptorchain.java:121)在在java.util.concurrent.ThreadPoolExecutor$worker.run（ThreadPoolExecutor.java:588)处的ent.threadPoolExecutor.runworker（threadPoolExecutor.java:1113) 在java.lang.thread.run(thread.java:818) 

Answer 1

我认为loadingstatus.progress.set（false）是问题所在。它不会在主线程中执行，这可能会引发异常。每当更新UI时，请使用dispatchers.main而不是dispatchers.default