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added scroll position save and restore in favorites tab

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Vonter 2021-06-01 19:55:49 +05:30
parent 01c944486d
commit caa71faab1
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GPG Key ID: 06F3D11E035E214F
1 changed files with 12 additions and 1 deletions
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app/src/main/java/awais/instagrabber/fragments/FavoritesFragment.kt
View File

@ -2,6 +2,7 @@ package awais.instagrabber.fragments
import android.content.DialogInterface import android.content.DialogInterface
import android.os.Bundle import android.os.Bundle
import android.os.Handler
import android.util.Log import android.util.Log
import android.view.LayoutInflater import android.view.LayoutInflater
import android.view.View import android.view.View
@ -23,6 +24,8 @@ import com.google.android.material.dialog.MaterialAlertDialogBuilder
class FavoritesFragment : Fragment() { class FavoritesFragment : Fragment() {
private var shouldRefresh = true private var shouldRefresh = true
private var scrollPosition = 0
private lateinit var binding: FragmentFavoritesBinding private lateinit var binding: FragmentFavoritesBinding
private lateinit var root: RecyclerView private lateinit var root: RecyclerView
private lateinit var adapter: FavoritesAdapter private lateinit var adapter: FavoritesAdapter
@ -46,11 +49,19 @@ class FavoritesFragment : Fragment() {
shouldRefresh = false shouldRefresh = false
} }
override fun onPause() {
super.onPause()
scrollPosition = (root.getLayoutManager() as LinearLayoutManager).findLastVisibleItemPosition()
}
override fun onResume() { override fun onResume() {
super.onResume() super.onResume()
if (!this::adapter.isInitialized) return if (!this::adapter.isInitialized) return
// refresh list every time in onViewStateRestored since it is cheaper than implementing pull down to refresh // refresh list every time in onViewStateRestored since it is cheaper than implementing pull down to refresh
favoritesViewModel.list.observe(viewLifecycleOwner, { list: List<Favorite?>? -> adapter.submitList(list) }) favoritesViewModel.list.observe(viewLifecycleOwner, {
list: List<Favorite?>? -> adapter.submitList(list, Runnable {
root.scrollToPosition(scrollPosition)})
})
} }
private fun init() { private fun init() {