1.先看效果图，滑动左边的列表，右边的列表也会跟着滑动。滑动右边的列表，左边的列表也会跟着滑动。
这里是视频演示
RecyclerView实现两个列表一起滑动
2.主活动MainActivity2类的代码如下
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.util.Log;
import com.example.myapplication001.R;
import java.util.ArrayList;
import java.util.List;
public class MainActivity2 extends AppCompatActivity {
private HomeAdapter rv_1_homeAdapter,rv_2_homeAdapter;
RecyclerView rv_1,rv_2;
int mDx;
LinearLayoutManager rv_1_Manager,rv_2_Manager;
@SuppressLint({
"MissingInflatedId", "WrongViewCast"})
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
rv_1=findViewById(R.id.rv_1);
rv_2=findViewById(R.id.rv_2);
List<String> titles = new ArrayList<>();
for (int i = 0; i < 50; i++) {
titles.add("中文"+i);
}
rv_1_homeAdapter = new HomeAdapter(getApplicationContext(),titles);
rv_1_Manager=new LinearLayoutManager(getApplicationContext());
//这里使用垂直滑动
rv_1_Manager.setOrientation(LinearLayoutManager.VERTICAL);
rv_1.setLayoutManager(rv_1_Manager);
rv_1.setAdapter(rv_1_homeAdapter);
rv_2_homeAdapter = new HomeAdapter(getApplicationContext(),titles);
rv_2_Manager=new LinearLayoutManager(getApplicationContext());
//这里使用垂直滑动
rv_2_Manager.setOrientation(LinearLayoutManager.VERTICAL);
rv_2.setLayoutManager(rv_2_Manager);
rv_2.setAdapter(rv_2_homeAdapter);
//监听recyclerView滑动，其他列表RcView跟着一起滑动
rv_1.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
// mDx = mDx + dx; //这行代码是列表水平移动，可以根据自己的实际情况来选择
mDx = mDx + dy; //这行代码是列表垂直移动，可以根据自己的实际情况来选择
Log.d("111333","正在滑动");
rv_2_Manager.scrollToPositionWithOffset(0, 0);
//scrollToPositionWithOffset：这种方式是定位到指定项如果该项可以置顶就将其置顶显示。第一个参数是指第几项，第二个参数是跟顶部的距离。
rv_2_Manager.scrollToPositionWithOffset(0, 0 - mDx);
rv_2_homeAdapter.notifyDataSetChanged();
}
});
//监听recyclerView滑动，其他列表RcView跟着一起滑动
rv_2.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
// mDx = mDx + dx; //这行代码是水平移动，可以根据自己的实际情况来选择
mDx = mDx + dy; //这行代码是垂直移动，可以根据自己的实际情况来选择
Log.d("111333","正在滑动");
rv_1_Manager.scrollToPositionWithOffset(0, 0);
//scrollToPositionWithOffset：这种方式是定位到指定项如果该项可以置顶就将其置顶显示。第一个参数是指第几项，第二个参数是跟顶部的距离。
rv_1_Manager.scrollToPositionWithOffset(0, 0 - mDx);
rv_1_homeAdapter.notifyDataSetChanged();
}
});
}
}
3.主活动MainActivity2类的activity_main2布局代码如下
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/refreshLa"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rv_1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rv_2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
4.RecyclerView的适配器HomeAdapter类代码如下
import android.annotation.SuppressLint;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.recyclerview.widget.RecyclerView;
import com.example.myapplication001.R;
import java.util.List;
public class HomeAdapter extends RecyclerView.Adapter<HomeAdapter.MyViewHolder>{
private Context mContext;
List<String> list;
public HomeAdapter(Context mContext, List<String> list) {
this.mContext = mContext;
this.list=list;
}
/**
* 设置布局
* @param viewGroup
* @param i
* @return
*/
@Override
public MyViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
MyViewHolder holder = new MyViewHolder(LayoutInflater.from(mContext).inflate(R.layout.item_recycler,viewGroup,false));
return holder;
}
/**
* 为控件绑定数据
* @param myViewHolder
* @param position
*/
@Override
public void onBindViewHolder(MyViewHolder myViewHolder, @SuppressLint("RecyclerView") int position) {
myViewHolder.tv_name.setText(list.get(position));
}
/**
* 返回项个数
* @return
*/
@Override
public int getItemCount() {
return list.size();
}
/**
* 定义控件并初始化
*/
class MyViewHolder extends RecyclerView.ViewHolder{
TextView tv_name;
public MyViewHolder(View itemView) {
super(itemView);
tv_name = itemView.findViewById(R.id.tv_name);
}
}
}
5…RecyclerView的适配器HomeAdapter类中的item_recycler布局代码如下
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/tv_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="name"
android:textColor="@color/black" />
</LinearLayout>
<View
android:id="@+id/view"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#E1DFDF" />
</LinearLayout>