网上都说recycleview是listview和gridview的结合体,是加强版.能自定义很多样式,而且类也比较开放,可以定义一些功能体
实用recycleview也比较简单:
1.创建布局管理器
2.创建间隔样式
3.创建默认动画样式
4.创建可拖动助手
5.创建适配器

//布局管理器
        mLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
        //间隔样式
        mDivider = new MyDividerItemDecoration(this, LinearLayoutManager.VERTICAL);
        //动画
        animator = new DefaultItemAnimator();
        //适配器
        mAdapter = new RecyclerAdapterCopy(getData());
        //拖动助手
        mItemTouchHelper = new ItemTouchHelper(new ItemTouchHelperCallback(mAdapter));
//---------------------设置上述5步到recycleview--------------
mRecyclerView.setLayoutManager(mLayoutManager);
        mRecyclerView.addItemDecoration(mDivider);
        mRecyclerView.setItemAnimator(animator);
        mItemTouchHelper.attachToRecyclerView(mRecyclerView);
        mRecyclerView.setAdapter(mAdapter);

MyDividerItemDecoration

public class MyDividerItemDecoration extends RecyclerView.ItemDecoration {
    private static final int[] ATTRS = new int[]{
            android.R.attr.listDivider
    };
    public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;
    public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;
    /**
     * 用于绘制间隔样式
     */
    private Drawable mDivider;
    /**
     * 列表的方向，水平/竖直
     */
    private int mOrientation;

    public MyDividerItemDecoration(Context context, int orientation) {

        final TypedArray a = context.obtainStyledAttributes(ATTRS);
        mDivider = a.getDrawable(0);
        a.recycle();
        setOrientation(orientation);

    }

    /**
     * 设置方向
     * @param orientation
     */
    private void setOrientation(int orientation) {
        if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) {
            throw new IllegalArgumentException("invalid orientation");
        }
        mOrientation = orientation;
    }

    @Override
    public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
        // 绘制间隔
        if (mOrientation == VERTICAL_LIST) {
            drawVertical(c, parent);
        } else {
            drawHorizontal(c, parent);
        }
    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        if (mOrientation == VERTICAL_LIST) {
            outRect.set(0, 0, 0, mDivider.getIntrinsicHeight());
        } else {
            outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);
        }
    }

    /**
     * 绘制垂直间隔
     */
    private void drawVertical(Canvas c, RecyclerView parent) {
        final int left = parent.getPaddingLeft();
        final int right = parent.getWidth() - parent.getPaddingRight();
        final int childCount = parent.getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View child = parent.getChildAt(i);
            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                    .getLayoutParams();
            final int top = child.getBottom() + params.bottomMargin +
                    Math.round(ViewCompat.getTranslationY(child));
            final int bottom = top + mDivider.getIntrinsicHeight();
            mDivider.setBounds(left, top, right, bottom);
            mDivider.draw(c);
        }
    }
    /**
     * 绘制水平间隔
     */
    private void drawHorizontal(Canvas c, RecyclerView parent) {
        final int top = parent.getPaddingTop();
        final int bottom = parent.getHeight() - parent.getPaddingBottom();
        final int childCount = parent.getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View child = parent.getChildAt(i);
            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                    .getLayoutParams();
            final int left = child.getRight() + params.rightMargin +
                    Math.round(ViewCompat.getTranslationX(child));
            final int right = left + mDivider.getIntrinsicHeight();
            mDivider.setBounds(left, top, right, bottom);
            mDivider.draw(c);
        }
    }
}

ItemTouchHelper

public class ItemTouchHelperCallback extends ItemTouchHelper.Callback {

    private RecyclerAdapterCopy mRecyclerAdapter;

    public ItemTouchHelperCallback(RecyclerAdapterCopy adapterCopy){
        this.mRecyclerAdapter = adapterCopy;
    }

    /**
     * 指定可以支持的拖放和滑动的方向
     * @param recyclerView
     * @param viewHolder
     * @return
     */
    @Override
    public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {

        final int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN;
        final int swipeFlags = ItemTouchHelper.START | ItemTouchHelper.END;
        return makeMovementFlags(dragFlags, swipeFlags);

    }

    @Override
    public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
        mRecyclerAdapter.onItemMove(viewHolder.getAdapterPosition(), target.getAdapterPosition());
        return false;
    }

    @Override
    public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
        mRecyclerAdapter.onItemDismiss(viewHolder.getAdapterPosition());
    }

    public interface IItemHelper {

        void onItemMove(int fromPosition, int toPosition);

        void onItemDismiss(int position);

    }
}

RecyclerAdapterCopy

public class RecyclerAdapterCopy extends RecyclerView.Adapter<RecyclerAdapterCopy.ViewHolder> implements ItemTouchHelperCallback.IItemHelper{

    private ArrayList<String> mData;

    private OnItemClickListener mOnItemClickListener;

    public RecyclerAdapterCopy(ArrayList<String> mData) {
        this.mData = mData;
    }

    public void updateData(ArrayList<String> data) {
        this.mData = data;
        notifyDataSetChanged();
    }

    @Override
    public int getItemViewType(int position) {
        return super.getItemViewType(position);
    }

    /**
     * 创建复用
     * @param parent
     * @param viewType
     * @return
     */
    @Override
    public RecyclerAdapterCopy.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        View inflate = View.inflate(parent.getContext(), R.layout.recycler_layout_2, null);

        ViewHolder holder = new ViewHolder(inflate);

        return holder;
    }

    /**
     * 绑定数据
     * @param holder
     * @param position
     */
    @Override
    public void onBindViewHolder(final RecyclerAdapterCopy.ViewHolder holder, final int position) {
        holder.mTv.setText(mData.get(position));
       ViewHolder mItems = holder;
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(mOnItemClickListener != null) {
                    int pos = holder.getLayoutPosition();
                    mOnItemClickListener.onItemClick(holder.itemView, pos);
                }
            }
        });


        holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                if(mOnItemClickListener != null) {
                    int pos = holder.getLayoutPosition();
                    mOnItemClickListener.onItemLongClick(holder.itemView, pos);
                }
                return true;
            }
        });



    }

    @Override
    public int getItemCount() {
        return mData == null ? 0 : mData.size();
    }
    public static class ViewHolder extends RecyclerView.ViewHolder {

        TextView mTv;

        public ViewHolder(View itemView) {
            super(itemView);
            mTv = (TextView) itemView.findViewById(R.id.tv_info);
        }
    }

    public void addNewItem() {
        if(mData == null) {
            mData = new ArrayList<>();
        }
        mData.add(0, "new Item");
        notifyItemInserted(0);
    }

    public void deleteItem() {
        if(mData == null || mData.isEmpty()) {
            return;
        }
        mData.remove(0);
        notifyItemRemoved(0);
    }

    /**
     * 公共接口
     */

    public void setOnItemClickListener(OnItemClickListener OnItemClickListener){
        this.mOnItemClickListener = OnItemClickListener;
    }

    public interface OnItemClickListener{
        void onItemClick(View view, int position);
        void onItemLongClick(View view, int position);
    }

    @Override
    public void onItemMove(int fromPosition, int toPosition) {

        String prev = mData.remove(fromPosition);
        mData.add(toPosition > fromPosition ? toPosition - 1 : toPosition, prev);
        notifyItemMoved(fromPosition, toPosition);
    }

    @Override
    public void onItemDismiss(int position) {
        mData.remove(position);
        notifyItemRemoved(position);
    }
}

recycle子布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">

<TextView
    android:id="@+id/tv_info"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="sssss"
    android:gravity="center"
    android:textSize="36sp"/>

</RelativeLayout>

让adapter实现IItemHelper是因为让recycle不光只是可以拖动,而且拖动后会把当前的item放到手指的位置,而且itemview左右移动会让当前item消失.
gif不会做,而且在手机上实现的,所以就不截图了.