我正在使用一个自定义的recyclerView，它可以有一个页脚和一个页眉，应该对动画有影响，这是正在发生的事情的视频：http : //www.videosprout.com/video?id= 00fae6ac-39ff-47b6 -b981-803d2773b67b

为什么每个视图都将一个位置移回原来的位置，而不是不这样做呢？

这是我的适配器：

public class AddEventsAdapter extends HFRecyclerViewAdapter<String, AddEventsAdapter.ViewHolder> {

    public AddEventsAdapter(Context context) {
        super(context);
    }

    @Override
    public void footerOnVisibleItem() {

    }

    @Override
    public void addData(int position, String item) {
        super.addData(position, item);
    }

    @Override
    public ViewHolder onCreateDataItemViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.event_item, parent, false);
        return new ViewHolder(v);
    }

    @Override
    public void onBindDataItemViewHolder(ViewHolder holder, int position) {
        holder.itemTv.setText(getData().get(position));
    }

    class ViewHolder extends RecyclerView.ViewHolder{
        TextView itemTv;
        public ViewHolder(View itemView) {
            super(itemView);
            itemTv = (TextView)itemView.findViewById(R.id.eventName);

        }
    }
}

实现：

    final AddEventsAdapter MyAdapter = new AddEventsAdapter(this);
    AddEventsRecycler.setAdapter(MyAdapter);
    AddEventsRecycler.setLayoutManager(new LinearLayoutManager(this));

    //add footer
    final View footerView = LayoutInflater.from(this).inflate(R.layout.events_footer, AddEventsRecycler, false);
    MyAdapter.setFooterView(footerView);

    footerView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            MyAdapter.addData(0, "Event number" + ++g);
        }
    });

    ArrayList<String> data = new ArrayList<>();
    data.add("Vacation");

    MyAdapter.setData(data);

自定义的RecyclerAdapter：

public abstract class HFRecyclerViewAdapter<T, VH extends RecyclerView.ViewHolder> extends BaseRecyclerViewAdapter<T> {

    public HFRecyclerViewAdapter(Context context) {
        super(context);
    }

    private static final int TYPE_HEADER = Integer.MAX_VALUE;
    private static final int TYPE_FOOTER = Integer.MAX_VALUE - 1;
    private static final int ITEM_MAX_TYPE = Integer.MAX_VALUE - 2;
    private RecyclerView.ViewHolder headerViewHolder;
    private RecyclerView.ViewHolder footerViewHolder;

    class HFViewHolder extends RecyclerView.ViewHolder {
        HFViewHolder(View v) {
            super(v);
        }
    }

    public void setHeaderView(View header){
        if (headerViewHolder == null || header != headerViewHolder.itemView) {
            headerViewHolder = new HFViewHolder(header);
            notifyDataSetChanged();
        }
    }

    public void setFooterView(View foot){
        if (footerViewHolder == null || foot != footerViewHolder.itemView) {
            footerViewHolder = new HFViewHolder(foot);
            notifyDataSetChanged();
        }
    }

    public void removeHeader(){
        if (headerViewHolder != null){
            headerViewHolder = null;
            notifyDataSetChanged();
        }
    }
    public void removeFooter(){
        if (footerViewHolder != null){
            footerViewHolder = null;
            notifyDataSetChanged();
        }
    }

    public boolean isHeader(int position){
        return hasHeader() && position == 0;
    }

    public boolean isFooter(int position){
        return hasFooter() && position == getDataItemCount() + (hasHeader() ? 1 : 0);
    }

    private int itemPositionInData(int rvPosition){
        return rvPosition - (hasHeader() ? 1 : 0);
    }
    private int itemPositionInRV(int dataPosition){
        return dataPosition + (hasHeader() ? 1 : 0);
    }

    @Override
    public void notifyMyItemInserted(int itemPosition) {
        notifyItemInserted(itemPositionInRV(itemPosition));
    }
    @Override
    public void notifyMyItemRemoved(int itemPosition) {
        notifyItemRemoved(itemPositionInRV(itemPosition));
    }

    @Override
    public void notifyMyItemChanged(int itemPosition) {
        notifyItemChanged(itemPositionInRV(itemPosition));
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if (viewType == TYPE_HEADER) {
            return headerViewHolder;
        } else if (viewType == TYPE_FOOTER) {
            return footerViewHolder;
        }
        return onCreateDataItemViewHolder(parent, viewType);
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        if (!isHeader(position) && !isFooter(position))
            onBindDataItemViewHolder((VH)holder, itemPositionInData(position));

        if (isFooter(position)){
            footerOnVisibleItem();
        }
    }

    public abstract void footerOnVisibleItem();

    @Override
    public int getItemCount() {
        int itemCount = getDataItemCount();
        if (hasHeader()) {
            itemCount += 1;
        }
        if (hasFooter()) {
            itemCount += 1;
        }
        return itemCount;
    }

    @Override
    public int getItemViewType(int position) {
        if (isHeader(position)) {
            return TYPE_HEADER;
        }
        if (isFooter(position)) {
            return TYPE_FOOTER;
        }
        int dataItemType = getDataItemType(itemPositionInData(position));
        if (dataItemType > ITEM_MAX_TYPE) {
            throw new IllegalStateException("getDataItemType() must be less than " + ITEM_MAX_TYPE + ".");
        }
        return dataItemType;
    }

    public int getDataItemCount() {
        return super.getItemCount();
    }

    /**
     * make sure your dataItemType < Integer.MAX_VALUE-1
     *
     * @param position item view position in rv
     * @return item viewType
     */
    public int getDataItemType(int position){
        return 0;
    }


    public boolean hasHeader(){
        return headerViewHolder != null;
    }
    public boolean hasFooter(){
        return footerViewHolder != null;
    }

    public abstract VH onCreateDataItemViewHolder(ViewGroup parent, int viewType);

    public abstract void onBindDataItemViewHolder(VH holder, int position);



}

编辑：删除视图时，会发生同样的情况removeData(getAdapterPosition()