Android RecyclerView实现点击条目删除

本文实例为大家分享了RecyclerView实现点击条目删除的具体代码，供大家参考，具体内容如下

MainActivity.java

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

private Button mButton1;
 private Button mButton2;
 private Button mButton3;
 private Button mButton4;
 private Button mButton5;
 private RecyclerView mRecyclerView;
 private ArrayList<String> mList;
 private LinearLayoutManager mLinearLayoutManager;
 private RvAdapter mAdapter;

@Override
 protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);

findViews();

mList = new ArrayList<>();
   for (int i=0;i<20;i++){
     mList.add(i+"item");
   }

mAdapter = new RvAdapter(mList, this);
   mRecyclerView.setAdapter(mAdapter);

//设置分割线
   mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL));
   //设置默认布局
   mLinearLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
   mRecyclerView.setLayoutManager(mLinearLayoutManager);

mAdapter.setOnItemClickListener(new RvAdapter.OnItemClickListener() {
     @Override
     public void onItemClick(int position) {
       mAdapter.remove(position);
     }

@Override
     public void onItemLongClick(int position) {

mAdapter.remove(position);
     }
   });

}

private void findViews() {

mRecyclerView = findViewById(R.id.rv);

mButton1= findViewById(R.id.b1);
   mButton2= findViewById(R.id.b2);
   mButton3= findViewById(R.id.b3);
   mButton4= findViewById(R.id.b4);
   mButton5= findViewById(R.id.b5);

mButton1.setOnClickListener(this);
   mButton2.setOnClickListener(this);
   mButton3.setOnClickListener(this);
   mButton4.setOnClickListener(this);
   mButton5.setOnClickListener(this);

}

@Override
 public void onClick(View view) {
   switch (view.getId()){
     case R.id.b1:

mAdapter.addData(3);
       mRecyclerView.scrollToPosition(0);
       break;
     case R.id.b2:

mAdapter.remove(mList.size()-1);
       break;
     case R.id.b3:

mLinearLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
       mRecyclerView.setLayoutManager(mLinearLayoutManager);
       break;
     case R.id.b4:

mRecyclerView.setLayoutManager(new GridLayoutManager(this, 3));
       //mRecyclerView.addItemDecoration(new android.support.v7.widget.DividerItemDecoration(this, DividerItemDecoration.HORIZONTAL));

break;
     case R.id.b5:

mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL));
       break;
   }
 }
}

activity_main.xml

<android.support.constraint.ConstraintLayout 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="match_parent"
 tools:context=".MainActivity">

<LinearLayout
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:orientation="vertical">

<LinearLayout
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="horizontal">
     <Button
       android:id="@+id/b1"
       android:layout_width="wrap_content"
       android:layout_weight="1"
       android:layout_height="wrap_content"
       android:text="添加"/>
     <Button
       android:id="@+id/b2"
       android:layout_width="wrap_content"
       android:layout_weight="1"
       android:layout_height="wrap_content"
       android:text="删除"/>
     <Button
       android:id="@+id/b3"
       android:layout_width="wrap_content"
       android:layout_weight="1"
       android:layout_height="wrap_content"
       android:text="List"/>
     <Button
       android:id="@+id/b4"
       android:layout_width="wrap_content"
       android:layout_weight="1"
       android:layout_height="wrap_content"
       android:text="Grid"/>
     <Button
       android:id="@+id/b5"
       android:layout_width="wrap_content"
       android:layout_weight="1"
       android:layout_height="wrap_content"
       android:text="flow"/>
   </LinearLayout>
   <android.support.v7.widget.RecyclerView
     android:id="@+id/rv"
     android:layout_width="match_parent"
     android:layout_height="match_parent"/>
 </LinearLayout>

</android.support.constraint.ConstraintLayout>

RvAdapter.java

public class RvAdapter extends RecyclerView.Adapter<RvAdapter.ViewHolder>{

private List<String> lists;
 private Context mContext;

public RvAdapter(List<String> lists, Context context) {
   this.lists = lists;
   mContext = context;
 }

@Override
 public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
   View view = View.inflate(mContext, R.layout.item, null);
   ViewHolder holder = new ViewHolder(view);
   return holder;
 }

public void addData(int position) {
   lists.add(position,"ff");
   notifyItemInserted(position);
 }

public void remove(int i) {
   lists.remove(i);
   notifyItemRemoved(i);
   notifyDataSetChanged();

}

public interface OnItemClickListener{  //自定义接口回调设置点击事件
   void onItemClick(int position);
   void onItemLongClick(int position);
 }

private OnItemClickListener mOnItemClickListener;

public void setOnItemClickListener(OnItemClickListener onItemClickListener){
   mOnItemClickListener=onItemClickListener;
 }

@Override
 public void onBindViewHolder(final ViewHolder holder, final int position) {
   holder.mTextView.setText(lists.get(position));

holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

int ps = holder.getLayoutPosition();
          mOnItemClickListener.onItemClick(ps);
        }
      });

holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View view) {

int ps=holder.getLayoutPosition();
          mOnItemClickListener.onItemLongClick(ps);
          return false;
        }
      });

}

@Override
 public int getItemCount() {
   return lists.size();
 }

public static class ViewHolder extends RecyclerView.ViewHolder{
   public final TextView mTextView;

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

build.gradle

implementation 'com.android.support:recyclerview-v7:27.1.1'

来源：https://blog.csdn.net/FanRQ_/article/details/84071848