Network State

NetworkState is a structure to handle the different network states.

sealed class NetworkState(
  open val page: Int, 
  open val pageSize: Int, 
  open val isFirstPage: Boolean, 
  open val isLastPage: Boolean
) {

  data class Loading(
      override val page: Int,
      override val pageSize: Int,
      override val isFirstPage: Boolean,
      override val isLastPage: Boolean
  ) : NetworkState(page = page, pageSize = pageSize, isFirstPage = isFirstPage, isLastPage = isLastPage)

  data class Loaded(
      override val page: Int,
      override val pageSize: Int,
      override val isFirstPage: Boolean,
      override val isLastPage: Boolean
  ) : NetworkState(page = page, pageSize = pageSize, isFirstPage = isFirstPage, isLastPage = isLastPage)

  data class Error(
      val exception: Throwable,
      override val page: Int,
      override val pageSize: Int,
      override val isFirstPage: Boolean,
      override val isLastPage: Boolean
  ) : NetworkState(page = page, pageSize = pageSize, isFirstPage = isFirstPage, isLastPage = isLastPage)
}

The NetworkState structure has 3 different states

• NetworkState.Loading: Indicate that a service call is running.

• NetworkState.Loaded: Indicate that a service call executed successfully.

• NetworkState.Error: Indicate that a service call failed.

Each state provides some information related the performed request:

• page: The requested page number.

• pageSize: The requested page size.

• isFirstPage: Indicates if the requested page is the first page.

• isLastPage: Indicates if the requested page is the last page.

The NetworkState.Error class provides an additional field including the Throwable that caused the error.