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list: prevent recycler scroll jumping in main

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Alexander Capehart 2024-11-07 13:48:54 -07:00
parent 1d19d00798
commit 8ec61c9388
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1 changed files with 14 additions and 0 deletions
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app/src/main/java/org/oxycblt/auxio/list/recycler/AuxioRecyclerView.kt
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@ -19,6 +19,7 @@
package org.oxycblt.auxio.list.recycler package org.oxycblt.auxio.list.recycler
import android.content.Context import android.content.Context
import android.os.Parcelable
import android.util.AttributeSet import android.util.AttributeSet
import android.view.WindowInsets import android.view.WindowInsets
import androidx.annotation.AttrRes import androidx.annotation.AttrRes
@ -38,6 +39,7 @@ open class AuxioRecyclerView
constructor(context: Context, attrs: AttributeSet? = null, @AttrRes defStyleAttr: Int = 0) : constructor(context: Context, attrs: AttributeSet? = null, @AttrRes defStyleAttr: Int = 0) :
RecyclerView(context, attrs, defStyleAttr) { RecyclerView(context, attrs, defStyleAttr) {
private val initialPaddingBottom = paddingBottom private val initialPaddingBottom = paddingBottom
private var savedState: Parcelable? = null
init { init {
// Prevent children from being clipped by window insets // Prevent children from being clipped by window insets
@ -60,6 +62,18 @@ constructor(context: Context, attrs: AttributeSet? = null, @AttrRes defStyleAttr
// Update the RecyclerView's padding such that the bottom insets are applied // Update the RecyclerView's padding such that the bottom insets are applied
// while still preserving bottom padding. // while still preserving bottom padding.
updatePadding(bottom = initialPaddingBottom + insets.systemBarInsetsCompat.bottom) updatePadding(bottom = initialPaddingBottom + insets.systemBarInsetsCompat.bottom)
if (savedState != null) {
// State restore happens before we get insets, so there will be scroll drift unless
// we restore the state after the insets are applied.
// We must only do this once, otherwise we'll get jumpy behavior.
super.onRestoreInstanceState(savedState)
savedState = null
}
return insets return insets
} }
override fun onRestoreInstanceState(state: Parcelable?) {
super.onRestoreInstanceState(state)
savedState = state
}
} }