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 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

RvAdapter.java

public class RvAdapter extends RecyclerView.Adapter{

  private List lists;
  private Context mContext;

  public RvAdapter(List 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'

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。