android arrayAdapter使用

//布局    

        android:id="@+id/tv_name"
        android:layout_width="0dp"
    android:layout_weight="1"
    android:textColor="#000000"
        android:text="aaaaa"
    android:layout_height="wrap_content"
        />
                    android:id="@+id/tv_phone"
            android:text="44444"
        android:layout_width="0dp"
    android:layout_weight="1"
    android:textColor="#000000"
    android:layout_height="wrap_content"
        
        />

package com.example.simpleadapter;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListView;
import android.widget.SimpleAdapter;


public class MainActivity extends Activity {


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//1 找到控件对像
ListView lv = (ListView)findViewById(R.id.lv);
//1.1 准备listview要显示的数据
List> data = new ArrayList>();
Map map1 = new HashMap();
map1.put("name", " 张飞");
map1.put("phone", "138888888");

Map map2 = new HashMap();
map2.put("name", "赵云");
map2.put("phone", "110");

Map map3 = new HashMap();
map3.put("name", "蝉进");
map3.put("phone", "1388222333");

Map map4 = new HashMap();
map4.put("name", "关忆");
map4.put("phone", "138822254546333");

data.add(map1);
data.add(map2);
data.add(map3);
data.add(map4);

//设置娄据适配器
// from mamp 集合的键
//to 是显示的控件
SimpleAdapter adapter = new SimpleAdapter(getApplicationContext(), data, R.layout.item,new String[]{"name","phone"} , new int[]{R.id.tv_name,R.id.tv_phone});
//3 设置数据适配器
lv.setAdapter(adapter);

}




}