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BetterLinearLayoutManager: Fix anchor view to preferred position 

Change-Id: Ib6b960603a25ffc4920067227a821debdb04973e
This commit is contained in:
SpiritCroc 2021-10-29 18:37:00 +02:00
parent 57d3f3bc68
commit 998018032a
1 changed files with 7 additions and 1 deletions
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8
vector/src/main/java/de/spiritcroc/recyclerview/widget/BetterLinearLayoutManager.java
View File

@ -906,9 +906,15 @@ public class BetterLinearLayoutManager extends LinearLayoutManager implements
mStackFromEnd);
if (referenceChild != null) {
anchorInfo.assignFromView(referenceChild, getPosition(referenceChild));
if (mCareAboutAnchorPlacement && mPreferredAnchorPosition >= 0) {
// Place anchor at the preferred anchor position
final int boundsStart = mOrientationHelper.getStartAfterPadding();
final int boundsEnd = mOrientationHelper.getEndAfterPadding();
anchorInfo.mCoordinate = (int) ((boundsEnd - boundsStart) * mPreferredAnchorPlacement);
// If all visible views are removed in 1 pass, reference child might be out of bounds.
// If that is the case, offset it back to 0 so that we use these pre-layout children.
if (!state.isPreLayout() && supportsPredictiveItemAnimations()) {
} else if (!state.isPreLayout() && supportsPredictiveItemAnimations()) {
// validate this child is at least partially visible. if not, offset it to start
final int childStart = mOrientationHelper.getDecoratedStart(referenceChild);
final int childEnd = mOrientationHelper.getDecoratedEnd(referenceChild);