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exception handle and code upgrade #5

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exception handle and code upgrade #5

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76ec125
"paging not working" -> Issue resolved
Nov 11, 2021
ff2fc19
exception handle and code upgrade
Nov 11, 2021
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2 changes: 1 addition & 1 deletion app/src/main/java/com/mindorks/example/paging3/data/APIService.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ import retrofit2.http.Query
interface APIService {

@GET("api/users")
suspend fun getListData(@Query("page") pageNumber: Int): Response<ApiResponse>
suspend fun getListData(@Query("page") pageNumber: Int): ApiResponse

companion object {

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18 changes: 12 additions & 6 deletions app/src/main/java/com/mindorks/example/paging3/data/datasource/PostDataSource.kt
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Expand Up @@ -3,26 +3,32 @@ package com.mindorks.example.paging3.data.datasource
import androidx.paging.PagingSource
import com.mindorks.example.paging3.data.APIService
import com.mindorks.example.paging3.data.response.Data
import java.io.IOException

class PostDataSource(private val apiService: APIService) : PagingSource<Int, Data>() {

private val DEFAULT_PAGE_INDEX= 1

override suspend fun load(params: LoadParams<Int>): LoadResult<Int, Data> {
try {
val currentLoadingPageKey = params.key ?: 1
val currentLoadingPageKey = params.key ?: DEFAULT_PAGE_INDEX
return try {
val response = apiService.getListData(currentLoadingPageKey)
val responseData = mutableListOf<Data>()
val data = response.body()?.myData ?: emptyList()
val data = response.myData ?: emptyList()
responseData.addAll(data)

val prevKey = if (currentLoadingPageKey == 1) null else currentLoadingPageKey - 1
val prevKey = if (currentLoadingPageKey == DEFAULT_PAGE_INDEX) null else currentLoadingPageKey - 1
val nextKey = if(responseData.isEmpty()) null else currentLoadingPageKey + 1

return LoadResult.Page(
data = responseData,
prevKey = prevKey,
nextKey = currentLoadingPageKey.plus(1)
nextKey = nextKey
)
} catch (e: Exception) {
return LoadResult.Error(e)
LoadResult.Error(e)
} catch (e: IOException) {
LoadResult.Error(e)
}
}

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12 changes: 6 additions & 6 deletions app/src/main/java/com/mindorks/example/paging3/data/response/ApiResponse.kt
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Expand Up @@ -5,15 +5,15 @@ import com.squareup.moshi.Json

data class ApiResponse(
@Json(name = "ad")
val ad: Ad,
val ad: Ad?,
@Json(name = "data")
val myData: List<Data>,
val myData: List<Data>?,
@Json(name = "page")
val page: Int,
val page: Int?,
@Json(name = "per_page")
val per_page: Int,
val per_page: Int?,
@Json(name = "total")
val total: Int,
val total: Int?,
@Json(name = "total_pages")
val total_pages: Int
val total_pages: Int?
)