自定义右拉刷新和下拉刷新的Recyclerview

package com.tencent.wcenter.ui.view;

import android.animation.ObjectAnimator;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.BitmapDrawable;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.recyclerview.widget.RecyclerView;

import com.tencent.wcenter.R;

/**
 * @author kcyu
 * @date :2022/2/8 10:59
 */
@SuppressLint("ViewConstructor")
public class WTRecyclerView extends RecyclerView {
    private Context mContext;
    private static final int REFRESH_HEADER = 10086;
    private static final int FIRST = 1;
    private static final int TWO = 2;
    private static final int ONLY = 3;
    private static final int LAST = 4;

    private float mLastY = -1;
    private int mMeasuredHeight = -1;
    private float mLastX = -1;
    private int mMeasuredWidth = -1;


    private HeadViewHolder h;
    private boolean releaseToRefresh = false;
    private RefreshListener r;
    private AnimationDrawable drawable;
    private static final String TAG = WTRecyclerView.class.getSimpleName();

    public WTRecyclerView(@NonNull Context context) {
        this(context,null);
    }

    public WTRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs) {
        this(context, attrs,0);
    }

    public WTRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {

        super(context, attrs, defStyleAttr);
        setAdapter(new AdapterWrapper(null));
        this.mContext = context;
    }

    private class AdapterWrapper extends Adapter {

        private Adapter mAdapter;

        AdapterWrapper(Adapter adapter) {
            this.mAdapter = adapter;
        }

        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            if (viewType == REFRESH_HEADER) {
                h = new HeadViewHolder(LayoutInflater.from(mContext)
                        .inflate(R.layout.item_refresh_header_land, parent, false));
                LayoutParams lp = new LayoutParams(0, ViewGroup.LayoutParams.MATCH_PARENT);
                h.itemView.setLayoutParams(lp);
                return h;
            }  else if (viewType == FIRST){
                return new FirstViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recommend_first_land, parent, false));
            }else if (viewType == TWO){
                return new TwoViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recommend_two_land, parent, false));
            }else if (viewType == ONLY){
                return new OnlyViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recommend_only_land, parent, false));
            }else{
                return new LastViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recommend_last_land, parent, false));
            }
        }


        @Override
        public void onBindViewHolder(ViewHolder holder, int position) {

        }

        @Override
        public int getItemCount() {
            return 5;
        }

        @Override
        public int getItemViewType(int position) {
//            return position == 0 ? REFRESH_HEADER : 0;

            if (position == 0){
                return REFRESH_HEADER;
            }else if (position == 1){
                return FIRST;
            } else if (position == 2 ){
                return TWO;
            }else if (position == 3){
                return ONLY;
            }

            return LAST;
        }

    }


    public static class FirstViewHolder extends RecyclerView.ViewHolder{

        public FirstViewHolder(@NonNull View itemView) {
            super(itemView);
        }
    }
    public static class TwoViewHolder extends RecyclerView.ViewHolder{

        public TwoViewHolder(@NonNull View itemView) {
            super(itemView);
        }
    }
    public static class OnlyViewHolder extends RecyclerView.ViewHolder{

        public OnlyViewHolder(@NonNull View itemView) {
            super(itemView);
        }
    }
    public static class LastViewHolder extends RecyclerView.ViewHolder{
        TextView tv_last;
        public LastViewHolder(@NonNull View itemView) {
            super(itemView);
            tv_last= itemView.findViewById(R.id.tv_last);
        }
    }


    @SuppressLint("ClickableViewAccessibility")
    @Override
    public boolean onTouchEvent(MotionEvent e) {
//        if (mLastY == -1) {
//            mLastY = e.getRawY();
//        }
//        if (mMeasuredHeight == -1) {
//            mMeasuredHeight = h.getMeasureHeight();
//        }
        if (mLastX == -1) {
            mLastX = e.getRawX();
        }
        if (mMeasuredWidth == -1) {
            mMeasuredWidth = h.getMeasureWidth();
        }
        switch (e.getAction()) {
            case MotionEvent.ACTION_DOWN:

                break;
            case MotionEvent.ACTION_MOVE:
//                float deltaY = e.getRawY() - mLastY;
//                mLastY = e.getRawY();
//                onMove(deltaY / 3);
                float deltaX = e.getRawX() - mLastX;
                Log.e(TAG, "onTouchEvent:e.getRawX()="+e.getRawX() +",mLastX= "+mLastX +", deltaX= "+deltaX);
                mLastX = e.getRawX();

                onMove(deltaX /5);




                break;
            default:
//                mLastY = -1;
//                if (releaseToRefresh) refresh();
//                else refreshComplete();
                mLastX = -1;
                if (releaseToRefresh) refresh();
                else refreshComplete();
                break;
        }
        return super.onTouchEvent(e);
    }

    static class HeadViewHolder extends ViewHolder {

        public HeadViewHolder(View itemView) {
            super(itemView);

        }

        public int getMeasureHeight() {
            itemView.measure(ViewGroup.LayoutParams.WRAP_CONTENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT);
            return itemView.getMeasuredHeight();
        }

        public int getMeasureWidth(){
            itemView.measure(ViewGroup.LayoutParams.WRAP_CONTENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT);
            return itemView.getMeasuredWidth();
        }
        public void setVisibleHeight(int height) {
            if (height < 0) height = 0;
            LayoutParams lp = (LayoutParams) itemView.getLayoutParams();
            lp.height = height;
            itemView.setLayoutParams(lp);

        }

        public void setVisibleWidth(int width){
            if (width < 0) width = 0;
            LayoutParams lp = (LayoutParams) itemView.getLayoutParams();
            lp.width = width;
            itemView.setLayoutParams(lp);
        }

        public int getVisibleHeight() {
            LayoutParams lp = (LayoutParams) itemView.getLayoutParams();
            return lp.height;
        }
        public int getVisibleWidth() {
            LayoutParams lp = (LayoutParams) itemView.getLayoutParams();
            Log.e(TAG, "getVisibleWidth: lp.width="+lp.width );
            return lp.width;
        }


        public ImageView getArrowImg() {
            return (ImageView) itemView.findViewById(R.id.iv_arrow);
        }

        public ImageView getRefreshImg() {
            return (ImageView) itemView.findViewById(R.id.iv_refresh);
        }

        public void changeText(String text) {
            TextView refreshTitle = (TextView) itemView.findViewById(R.id.tv_refresh_text);
            refreshTitle.setText(text);
        }
    }

    public void refreshComplete() {
        if (releaseToRefresh) {
            ImageView arrowImg = h.getArrowImg();
            ObjectAnimator rotate = ObjectAnimator.ofFloat(arrowImg, "rotation", 180f, 0f);
            rotate.setDuration(300);
            rotate.start();
        }
        releaseToRefresh = false;
        handler.sendEmptyMessageDelayed(1, 800);
    }

    @SuppressLint("HandlerLeak")
    Handler handler = new Handler() {

        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case 1:
//                    h.setVisibleHeight(0);
                    h.setVisibleWidth(0);
                    h.changeText("右拉刷新");
                    break;
                case 2:
                    if (drawable != null) drawable.stop();
                    ImageView refreshImg = h.getRefreshImg();
                    ImageView arrowImg = h.getArrowImg();
                    arrowImg.setVisibility(VISIBLE);
                    refreshImg.setVisibility(GONE);
                    h.changeText("刷新完成");
                    refreshComplete();
                    break;
                default:

                    break;
            }
        }
    };

    public void onMove(float deltaY) {
//        h.setVisibleHeight((int) deltaY + h.getVisibleHeight());
//        if (h.getVisibleHeight() > mMeasuredHeight) {
//            if (!releaseToRefresh) {
//                //旋转箭头
//                ImageView arrowImg = h.getArrowImg();
//                ObjectAnimator rotate = ObjectAnimator.ofFloat(arrowImg, "rotation", 0f, 180f);
//                h.changeText("释放刷新");
//                rotate.setDuration(300);
//                rotate.start();
//                releaseToRefresh = true;
//            }
//        }
        h.setVisibleWidth((int) (deltaY+h.getVisibleWidth()));
//        h.setVisibleWidth(136);
        if (h.getVisibleWidth() > mMeasuredWidth) {

            Log.e(TAG, "onMove: h.getVisibleWidth()="+h.getVisibleWidth()+",mMeasuredWidth=  " +mMeasuredWidth);
            if (!releaseToRefresh) {
                //旋转箭头
                stopScroll();
                ImageView arrowImg = h.getArrowImg();
                ObjectAnimator rotate = ObjectAnimator.ofFloat(arrowImg, "rotation", 0f, 180f);
                h.changeText("释放刷新");
                rotate.setDuration(300);
                rotate.start();
                releaseToRefresh = true;
            }
        }
    }

    private void refresh() {
        ImageView refreshImg = h.getRefreshImg();
        ImageView arrowImg = h.getArrowImg();
        arrowImg.setVisibility(GONE);
        refreshImg.setVisibility(VISIBLE);
        drawable = (AnimationDrawable) refreshImg.getDrawable();
        drawable.start();
        h.changeText("刷新中...");
        //todo  数据请求完成后
        handler.sendEmptyMessageDelayed(2,3000);
    }

    public void setPullToRefreshListener(RefreshListener r) {
        this.r = r;
    }

    public interface RefreshListener {
        void refresh();
    }


}