RecycleView 点击事件监听

1、定义RecycleView 监听接口类

package com.example.*****;

import android.view.View;

public interface OnRecycleViewClickListener {
    void onItemClickListener (View view);

    void onItemLongClickListener(View view);
}

3、布局中加个RecycleView，宽高位置等等不用管它

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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">
    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/mainTitle"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        />
</androidx.constraintlayout.widget.ConstraintLayout>

4、新建个Layout XML FIle，分割线可直接定义个View来解决；

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_height="80sp"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_centerHorizontal="true"
    android:layout_margin="10dp">

    <TextView
        android:id="@+id/mainTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_centerInParent="true"
        android:layout_marginEnd="182dp"
        android:gravity="center"
        android:text="text"
        android:textAlignment="center"
        android:textSize="24sp"
        android:textStyle="bold" />

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#FFD1D0D0"
        android:layout_below="@id/mainTitle"
        android:layout_marginTop="10sp"
        android:layout_marginRight="5sp"
        android:layout_marginLeft="5sp"/>

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_alignParentEnd="true"
        android:layout_centerVertical="true"
        android:layout_marginTop="13dp"
        android:layout_marginEnd="6dp"
        app:srcCompat="@android:drawable/ic_media_play" />


</RelativeLayout>

设置后如上图

 

 

5、重写Adapter

package com.example.mycalculator20;

import android.content.Context;
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 TitleRecyclerAdapter extends RecyclerView.Adapter<TitleRecyclerAdapter.TitleViewHolder> {
    private Context context;
    private List<String> list;
    private View inflater;
    private OnRecycleViewClickListener listener;

    //创建方法 setItemClickListener();
    public void setItemClickListener (OnRecycleViewClickListener itemClickListener){
        listener = itemClickListener;
    }

    class TitleViewHolder extends RecyclerView.ViewHolder{
        TextView textView;

        public TitleViewHolder(@NonNull View itemView) {
            super(itemView);
            textView=itemView.findViewById(R.id.mainTitle);
        }
    }

    //构造方法 传入数据
    public TitleRecyclerAdapter(Context context, List<String> list){
        this.context = context;
        this.list = list;
    }


    @NonNull
    @Override
    public TitleRecyclerAdapter.TitleViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        //创建viewHolder，返回每一项布局;
        inflater = LayoutInflater.from(context).inflate(R.layout.sample_main__title_recycle_view,parent,false);
        TitleViewHolder titleViewHolder = new TitleViewHolder(inflater);

        //接口回调
        if(listener != null){
            inflater.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    listener.onItemClickListener(v);
                }
            });

        }

        return titleViewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull TitleRecyclerAdapter.TitleViewHolder holder, int position) {
        //将数据和控件绑定
        holder.textView.setText(list.get(position));

    }

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

6、MainActivity.class

package com.example.mycalculator20;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.recyclerview.widget.StaggeredGridLayoutManager;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private   RecyclerView mainTitle;
    final String[] Titls ={"通过管径计算流速","通过流速计算管径"};
    private List<String> list;
    private TitleRecyclerAdapter titleAdapter;




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


        mainTitle = findViewById(R.id.mainTitle);

        list = Arrays.asList(Titls);

        titleAdapter = new TitleRecyclerAdapter(MainActivity.this,list);
        LinearLayoutManager manager = new LinearLayoutManager(this);
        StaggeredGridLayoutManager stagger = new StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.VERTICAL);
        mainTitle.setLayoutManager(stagger);
        mainTitle.setAdapter(titleAdapter);

        //Item点击监听
        titleAdapter.setItemClickListener(new OnRecycleViewClickListener() {
            @Override
            public void onItemClickListener(View view) {
                int position = mainTitle.getChildAdapterPosition(view);
                switch (position){
                    case 0:
                        startActivity(new Intent(MainActivity.this,DNtoV.class));
                        break;
                    case 1:
                        startActivity(new Intent(MainActivity.this,VTODN.class));
                        break;
                }
            }

            @Override
            public void onItemLongClickListener(View view) {

            }
        });



    }
}

 

完成后效果图