使用workmanager获取远程异常

import android.content.Context
import androidx.work.*
import java.util.concurrent.TimeUnit

class FetchRemoteDataWorker(context: Context, params: WorkerParameters) : Worker(context, params) {

    override fun doWork(): Result {
        return try {
            // 执行网络请求
            val response = performNetworkRequest()
            if (response.isSuccessful) {
                // 处理成功响应
                Result.success()
            } else {
                // 处理服务器错误
                Result.failure(workDataOf("error_code" to response.code()))
            }
        } catch (e: Exception) {
            // 处理异常情况
            when (e) {
                is java.net.UnknownHostException -> Result.failure(workDataOf("error_type" to "Unknown Host"))
                is java.net.SocketTimeoutException -> Result.failure(workDataOf("error_type" to "Socket Timeout"))
                else -> Result.failure(workDataOf("error_type" to e.message))
            }
        }
    }

    private fun performNetworkRequest(): Response {
        // 这里应该是实际的网络请求代码
        // 返回模拟的响应对象
        return Response.Builder()
            .code(200)
            .message("OK")
            .build()
    }
}

data class Response(val code: Int, val message: String) {
    fun isSuccessful(): Boolean = code in 200..299
}

// 在应用中调度任务
val workManager = WorkManager.getInstance(context)
val workRequest = OneTimeWorkRequestBuilder<FetchRemoteDataWorker>()
    .setConstraints(Constraints.Builder().setRequiredNetworkType(NetworkType.CONNECTED).build())
    .setInitialDelay(1, TimeUnit.HOURS)
    .build()

workManager.enqueue(workRequest)