向上滚动时 StaggeredGridLayout 混乱

Question

我为我的 RecyclerView 做了这个 StaggeredGridLayout：

代码如下：

 @Override
public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, final int position) {

    Photo photo = mPhotos.get(position);

    TextView titleView = ((CellViewHolder) viewHolder).titleTextView;
        titleView.setText(photo.getTitle());

    TextView subTitleView = ((CellViewHolder) viewHolder).subtitleTextView;
        subTitleView.setText(photo.getName());

    Picasso.with(mContext).load(photo.getPhotoUrl()).into(((CellViewHolder) viewHolder).imageView);

    ImageView userImageOverlay = ((CellViewHolder) viewHolder).userImageOverlay;

    StaggeredGridLayoutManager.LayoutParams layoutParams = (StaggeredGridLayoutManager.LayoutParams) viewHolder.itemView.getLayoutParams();

    if (position == 0 || position % 4 == 0) {
        layoutParams.setFullSpan(true);
        layoutParams.height = Math.round(Utils.convertDpToPixel(202.67f, mContext));
        titleView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 21.67f);
        subTitleView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 12.00f);
        userImageOverlay.setVisibility(View.VISIBLE);
    } else if ((position - 1) % 4 == 0) {
        layoutParams.setFullSpan(false);
        layoutParams.height = Math.round(Utils.convertDpToPixel(360.00f, mContext));
        titleView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 15.00f);
        subTitleView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 10.00f);
        userImageOverlay.setVisibility(View.GONE);
    } else {
        layoutParams.setFullSpan(false);
        layoutParams.height = Math.round(Utils.convertDpToPixel(180.00f, mContext));
        titleView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 15.00f);
        subTitleView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 10.00f);
        userImageOverlay.setVisibility(View.GONE);
    }
}

一切正常，除非我向上滚动它。它按位置按降序绘制单元格，并在网格中留下空白空间：

有什么想法即使向上滚动也能保持相同的模式吗？

Answer 1

您需要设置gap strategy

mLayoutMang.setGapStrategy(StaggeredGridLayoutManager.GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS);

GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS 滚动状态变为空闲时会更新布局

Answer 2

试试这个：

StaggeredGridLayoutManager manager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
manager.setGapStrategy(StaggeredGridLayoutManager.GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS);
recyclerView.setLayoutManager(manager);

或：

或：github项目Picasso/Glide-RecyclerView-StaggeredGridLayoutManager

向上滚动时 StaggeredGridLayout 混乱

StaggeredGridLayout messes up when scrolling up

android

android-recyclerview

staggered-gridview