msfjarvis/compose-lobsters
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app: add LobstersPagingSource

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Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
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Harsh Shandilya 2020-12-02 22:22:25 +05:30
parent c29edfd402
commit ada6a6f3ff
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GPG key ID: 366D7BBAD1031E80
3 changed files with 28 additions and 0 deletions
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1
app/build.gradle.kts
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@ -72,6 +72,7 @@ dependencies {
implementation(Dependencies.AndroidX.Compose.foundationLayout)
implementation(Dependencies.AndroidX.Compose.material)
implementation(Dependencies.AndroidX.Compose.navigation)
implementation(Dependencies.AndroidX.Compose.paging)
implementation(Dependencies.AndroidX.Compose.runtime)
implementation(Dependencies.AndroidX.Compose.ui)
implementation(Dependencies.AndroidX.Compose.uiTooling)

26
app/src/main/java/dev/msfjarvis/lobsters/data/remote/LobstersPagingSource.kt Normal file
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@ -0,0 +1,26 @@
package dev.msfjarvis.lobsters.data.remote
import androidx.paging.PagingSource
import dev.msfjarvis.lobsters.data.api.LobstersApi
import dev.msfjarvis.lobsters.model.LobstersPost
import javax.inject.Inject
class LobstersPagingSource @Inject constructor(
private val lobstersApi: LobstersApi,
) : PagingSource<Int, LobstersPost>() {
override suspend fun load(params: LoadParams<Int>): LoadResult<Int, LobstersPost> {
return try {
val page = params.key ?: 1
val posts = lobstersApi.getHottestPosts(page)
LoadResult.Page(
data = posts,
prevKey = if (page == 1) null else page - 1,
nextKey = page.plus(1)
)
} catch (e: Exception) {
LoadResult.Error(e)
}
}
}

1
buildSrc/src/main/java/Dependencies.kt
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@ -50,6 +50,7 @@ object Dependencies {
const val foundationLayout = "androidx.compose.foundation:foundation-layout:$COMPOSE_VERSION"
const val material = "androidx.compose.material:material:$COMPOSE_VERSION"
const val navigation = "androidx.navigation:navigation-compose:1.0.0-alpha04"
const val paging = "androidx.paging:paging-compose:1.0.0-alpha03"
const val runtime = "androidx.compose.runtime:runtime:$COMPOSE_VERSION"
const val ui = "androidx.compose.ui:ui:$COMPOSE_VERSION"
const val uiUnit = "androidx.compose.ui:ui-unit:$COMPOSE_VERSION"