Android RecyclerView的简单使用

本文实例为大家分享了Android RecyclerView使用的具体代码，供大家参考，具体内容如下

package com.itheima74.recyclerview;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;

/**
* RecyclerView
* 1.增强版的listview
* 2.官方推荐
* 3.使用步骤:
* a.build.gradle文件中添加依赖compile 'com.android.support:recyclerview-v7:25.2.0'
* b.xml布局中引入,注意完整包名+类名
* c.具体见代码
*/
public class MainActivity extends AppCompatActivity {

ArrayList<Fruit> mFruitList;
private RecyclerView recyclerview;

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

initView();
initData();
initAdapter();
}

/**
* 初始化数据适配器
*/
private void initAdapter() {
recyclerview.setAdapter(new FruitAdapter());
}

/**
* 初始化控件
*/
private void initView() {
recyclerview = (RecyclerView) findViewById(R.id.recyclerview);

// 设置为LinearLayoutManager布局方式,线性布局
// LinearLayoutManager layoutManager = new LinearLayoutManager(this);
// 两种方式,水平或垂直排布,默认垂直排布
// layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
// recyclerview.setLayoutManager(layoutManager);

// 设置为GridLayoutManager布局方式,3列排布
GridLayoutManager gridLayoutManager = new GridLayoutManager(this,3);
recyclerview.setLayoutManager(gridLayoutManager);
}

/**
* 初始化数据,水果集合
*/
private void initData() {
mFruitList = new ArrayList<>();
mFruitList.add(new Fruit("apple", R.drawable.apple_pic));
mFruitList.add(new Fruit("banana", R.drawable.banana_pic));
mFruitList.add(new Fruit("cherry", R.drawable.cherry_pic));
mFruitList.add(new Fruit("grape", R.drawable.grape_pic));
mFruitList.add(new Fruit("mango", R.drawable.mango_pic));
mFruitList.add(new Fruit("orange", R.drawable.orange_pic));
mFruitList.add(new Fruit("pear", R.drawable.pear_pic));
mFruitList.add(new Fruit("pineapple", R.drawable.pineapple_pic));
mFruitList.add(new Fruit("strawberry", R.drawable.strawberry_pic));
mFruitList.add(new Fruit("watermelon", R.drawable.watermelon_pic));
}

class FruitAdapter extends RecyclerView.Adapter<ViewHolder> {

// 返回ViewHolder对象
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new ViewHolder(View.inflate(getApplicationContext(), R.layout.listview_item, null));
}

// 刷新界面,为ViewHolder两个属性设置内容
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Fruit fruit = mFruitList.get(position);
holder.iv.setImageResource(fruit.imageId);
holder.tv.setText(fruit.name);
}

@Override
public int getItemCount() {
// FruitAdapter是MainActivity的内部类,可以直接使用外部类的成员变量
return mFruitList.size();
}
}

static class ViewHolder extends RecyclerView.ViewHolder {
ImageView iv;
TextView tv;

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

}

package com.itheima74.recyclerview;

/**
* Created by My on 2017/3/2.
*/

class Fruit {
String name;
int imageId;

Fruit(String name, int imageId) {
this.name = name;
this.imageId = imageId;
}
}

<img src="http://img.blog.csdn.net/20170303085928987?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemh1NjIwMTk3Ng==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""> 

效果图：