RecycleView 刷新Item

package com.example.recycleview; import android.content.Context; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; import androidx.annotation.NonNull; import androidx.recyclerview.widget.RecyclerView; import java.util.List; public class PersonAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { private Context context; private List<Person> list; public PersonAdapter(Context context, List<Person> list) { this.context = context; this.list = list; } @NonNull @Override public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { View view = LayoutInflater.from(context).inflate(R.layout.layout_item, null); return new MyViewHolder(view); } @Override public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) { Person person = list.get(position); MyViewHolder holder1 = (MyViewHolder) holder; holder1.update(person); } @Override public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position, @NonNull List<Object> payloads) { Log.e("nyz", "onBindViewHolder pos " + position); if (!payloads.isEmpty() && payloads.get(0).equals("name")) { Log.e("nyz", "update name"); Person person = list.get(position); ((MyViewHolder) holder).nameTv.setText(person.name); } else { Log.e("nyz", "update item"); super.onBindViewHolder(holder, position, payloads); } } public void updateData() { notifyDataSetChanged(); } public void updateData(int pos) { notifyItemChanged(pos); } public void updateData(int pos, Object payload) { notifyItemChanged(pos, payload); } @Override public int getItemCount() { return list.size(); } class MyViewHolder extends RecyclerView.ViewHolder { TextView ageTv; TextView nameTv; public MyViewHolder(@NonNull View itemView) { super(itemView); ageTv = itemView.findViewById(R.id.ageTv); nameTv = itemView.findViewById(R.id.nameTv); } public void update(Person person) { Log.e("nyz", "update " + person.toString()); ageTv.setText(person.age+""); nameTv.setText(person.name); } } }