使用Retrofit + Kotlin Flow处理错误的优雅方法

class ErrorHandler : Callback<Response> {
    override fun onResponse(call: Call<Response>, response: Response<Response>) {
        // 处理成功的情况
    }

    override fun onFailure(call: Call<Response>, t: Throwable) {
        // 处理失败的情况
    }
}

val retrofit = Retrofit.Builder()
    .baseUrl("https://api.example.com/")
    .addConverterFactory(GsonConverterFactory.create())
    .build()

val service = retrofit.create(Service::class.java)
val call = service.getData()
call.enqueue(ErrorHandler())

override fun onFailure(call: Call<Response>, t: Throwable) {
    if (t is IOException) {
        // 处理网络连接错误
    } else {
        // 处理其他错误
    }
}

fun fetchData(): Flow<Result<Data>> = flow {
    try {
        val response = service.getData()
        emit(Result.Success(response))
    } catch (e: Exception) {
        emit(Result.Error(e))
    }
}

fetchData().collect { result ->
    when (result) {
        is Result.Success -> {
            // 处理成功的情况
        }
        is Result.Error -> {
            // 处理错误的情况
        }
    }
}