RecyclerView的使用

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本文详细介绍如何使用 RecyclerView 实现网格和列表样式布局，并提供从添加依赖到实现自定义适配器和 ViewHolder 的完整步骤。

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一、添加依赖：

二、布局：

<android.support.v7.widget.RecyclerView
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >
</android.support.v7.widget.RecyclerView>

三、activity代码：

recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

recyclerView.setLayoutManager(new GridLayoutManager(SelectActivity.this,2));
GvAdapter adapter=new GvAdapter(data,SelectActivity.this);
recyclerView.setAdapter(adapter);

四、适配器：

package com.example.day09_kuangjia_login.adapter;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.day09_kuangjia_login.R;
import com.example.day09_kuangjia_login.holder.MyHolder;
import com.example.day09_kuangjia_login.model.bean.SelBean;
import com.example.day09_kuangjia_login.utils.ImageUtil;
import com.nostra13.universalimageloader.core.ImageLoader;

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

/**
 * Created by DESKTOP on 2017/12/9.
 */

public class GvAdapter extends RecyclerView.Adapter<MyHolder>{
    List<SelBean.DataBean> data;
    Context con;
    List<String> imgs=new ArrayList<>();
    public GvAdapter(List<SelBean.DataBean> data, Context con) {
        this.data = data;
        this.con = con;
    }

    @Override
    public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(con).inflate(R.layout.gv_child, parent, false);
        MyHolder holder=new MyHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(MyHolder holder, int position) {

        for (int i = 0; i< data.size(); i++){
            String[] images = data.get(i).getImages().split("\\|");
            Log.d("iiiii",images.toString());
            for (int j=0;j<images.length;j++){
                imgs.add(images[j]);
            }
        }
        holder.price.setText("折扣价"+data.get(position).getPrice());
        holder.title.setText(data.get(position).getTitle());

        ImageLoader.getInstance().displayImage(imgs.get(position),holder.image, ImageUtil.getoption());
    }

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

五、holder：

package com.example.day09_kuangjia_login.holder;

import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.day09_kuangjia_login.R;

/**
 * Created by DESKTOP on 2017/12/9.
 */

public class GvHolder extends RecyclerView.ViewHolder{
    public final ImageView image;
    public final TextView title;
    public final TextView price;
    public GvHolder(View itemView) {
        super(itemView);
        image = (ImageView) itemView.findViewById(R.id.img);
        title = itemView.findViewById(R.id.title);
        price = (TextView) itemView.findViewById(R.id.price);
    }
}
、、、这是现实表格样式的条目
、、、想要列表样式就把activity中的
recyclerView.setLayoutManager(new GridLayoutManager(SelectActivity.this,2));
代码和布局修改和替换
recyclerView.setLayoutManager(new LinearLayoutManager(SelectActivity.this,LinearLayoutManager.VERTICAL,false));