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fix: scroll state of trends not preserved #6271

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merged 1 commit into from
Jul 23, 2024
Merged

fix: scroll state of trends not preserved #6271

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18 changes: 13 additions & 5 deletions app/src/main/java/com/github/libretube/ui/fragments/TrendsFragment.kt
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Original file line number Diff line number Diff line change
@@ -1,14 +1,14 @@
package com.github.libretube.ui.fragments

import android.content.Intent
import android.content.res.Configuration
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.core.view.isGone
import androidx.fragment.app.activityViewModels
import androidx.lifecycle.DefaultLifecycleObserver
import androidx.lifecycle.LifecycleOwner
import androidx.recyclerview.widget.RecyclerView
import com.github.libretube.R
import com.github.libretube.databinding.FragmentTrendsBinding
import com.github.libretube.ui.activities.SettingsActivity
Expand Down Expand Up @@ -41,8 +41,9 @@ class TrendsFragment : DynamicLayoutManagerFragment() {
viewModel.trendingVideos.observe(viewLifecycleOwner) { videos ->
if (videos == null) return@observe

binding.recview.layoutManager?.onRestoreInstanceState(viewModel.recyclerViewState)
binding.recview.adapter = VideosAdapter(videos.toMutableList())
binding.recview.layoutManager?.onRestoreInstanceState(viewModel.recyclerViewState)

binding.homeRefresh.isRefreshing = false
binding.progressBar.isGone = true

Expand All @@ -61,15 +62,22 @@ class TrendsFragment : DynamicLayoutManagerFragment() {
viewModel.fetchTrending(requireContext())
}

viewLifecycleOwner.lifecycle.addObserver(object : DefaultLifecycleObserver {
override fun onDestroy(owner: LifecycleOwner) {
binding.recview.addOnScrollListener(object : RecyclerView.OnScrollListener() {
override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
super.onScrollStateChanged(recyclerView, newState)
viewModel.recyclerViewState = _binding?.recview?.layoutManager?.onSaveInstanceState()
}
})

viewModel.fetchTrending(requireContext())
}

override fun onConfigurationChanged(newConfig: Configuration) {
super.onConfigurationChanged(newConfig)
// manually restore the recyclerview state due to https://github.com/material-components/material-components-android/issues/3473
binding.recview.layoutManager?.onRestoreInstanceState(viewModel.recyclerViewState)
}

override fun onDestroyView() {
super.onDestroyView()
_binding = null
Expand Down
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