Android RecyclerView使用

AndroidRecyclerView使用详解

最新推荐文章于 2025-01-08 09:50:15 发布

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本文详细介绍如何使用AndroidRecyclerView，包括其核心组件的导入、创建、布局管理及适配器实现，同时展示了一个简单的自定义适配器类MyAdapter的代码实例。

Android RecyclerView 是Android 5.0 以后提供的support v7中一个取代 ListView 的控件

RecyclerView 的使用：

import android.app.Activity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

public class MainActivity extends Activity {
    private RecyclerView rv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        rv = new RecyclerView(this);
        setContentView(rv);
        rv.setLayoutManager(new LinearLayoutManager(this));

        rv.setAdapter(new MyAdapter());
    }

}

MyAdapter 代码：

import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

/**
 * Created by Administrator on 2015/5/19.
 */
class MyAdapter extends RecyclerView.Adapter {
    class ViewHolder extends RecyclerView.ViewHolder {
        private View root;
        private TextView title;
        private TextView content;
        public ViewHolder(View root) {
            super(root);
            title = (TextView) root.findViewById(R.id.tvTitle);
            content = (TextView) root.findViewById(R.id.tvContent);
        }

        public TextView getContent() {
            return content;
        }

        public TextView getTitle() {
            return title;
        }
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        return new ViewHolder(LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_cell,null));
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int i) {
        ViewHolder vh = (ViewHolder) viewHolder;
        vh.getContent().setText(data[i].getContent());
        vh.getTitle().setText(data[i].getTitle());
    }

    @Override
    public int getItemCount() {
        return data.length;
    }
    CellData data[] = new CellData[]{new CellData(),new CellData(),new CellData()};
}

RecycleView 的布局：

 //第二个参数为多少列    第三个参数为布局方向，第四个参数为 是否翻转
rv.setLayoutManager(new GridLayoutManager(this,3,LinearLayoutManager.HORIZONTAL,false));
rv.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false));