Android RecyclerView实现滑动删除

本文实例为大家分享了RecyclerView实现滑动删除的具体代码，供大家参考，具体内容如下

package com.example.demo;
 
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.ItemTouchHelper;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
 
import android.graphics.Canvas;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
 
import java.util.ArrayList;
import java.util.List;
 

public class MainActivity extends AppCompatActivity {
 private RecyclerView recyclerView;
 
 private List list=new ArrayList();
 
 class MyAdpter extends RecyclerView.Adapter{
 
  class ViewHolder extends RecyclerView.ViewHolder{
   private TextView textView;
   private LinearLayout linearLayout;
 
   public ViewHolder(@NonNull View itemView) {
    super(itemView);
    linearLayout=itemView.findViewById(R.id.ll_main);
    textView=itemView.findViewById(R.id.tv_main);
   }
  }
 
  @NonNull
  @Override
  public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
   View inflate = LayoutInflater.from(getApplicationContext()).inflate(R.layout.item_demo,parent, false);
   return new ViewHolder(inflate);
  }
 
  @Override
  public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
 
  }
 
  @Override
  public int getItemCount() {
   return list.size();
  }
 }
 
 class CallBack extends ItemTouchHelper.Callback{
  @Override
  public int getMovementFlags(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder) {
   return makeMovementFlags(0,ItemTouchHelper.LEFT);
  }
 
  @Override
  public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder target) {
   return false;
  }
 
  @Override
  public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
   
  }
 
  @Override
  public void onChildDraw(@NonNull Canvas c, @NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
 
 
   if (actionState==ItemTouchHelper.ACTION_STATE_SWIPE){
    
    ViewGroup viewGroup= (ViewGroup) viewHolder.itemView;
    TextView textView = (TextView) viewGroup.getChildAt(1);
    ViewGroup.LayoutParams layoutParams = textView.getLayoutParams();
    if (Math.abs(dX)<=layoutParams.width){
     
     viewHolder.itemView.scrollTo((int) -dX,0);
     
    }
   }
  }
 }
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
 
  recyclerView=findViewById(R.id.rv_main);
  list.add(1);
  list.add("2");
  MyAdpter myAdpter=new MyAdpter();
  LinearLayoutManager linearLayoutManager=new LinearLayoutManager(getApplicationContext());
  linearLayoutManager.setOrientation(RecyclerView.VERTICAL);
  recyclerView.setLayoutManager(linearLayoutManager);
  recyclerView.setAdapter(myAdpter);
  ItemTouchHelper itemTouchHelper=new ItemTouchHelper(new CallBack());
  itemTouchHelper.attachToRecyclerView(recyclerView);
 }
}

效果图：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。