andorid 列表视图之SimpleAdapter

.xml

<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/sa_1">



</ListView>

.java

package com.hanqi.application3;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class UI4Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_ui4);

        ListView sa_1 = (ListView)findViewById(R.id.sa_1);
        //准备数据源
        List<Map<String,Object>> lm = new ArrayList<Map<String,Object>>();

       Map<String, Object> map=new HashMap<String, Object>();
        map.put("image",R.drawable.an1);
        map.put("name","美食图片01");
        map.put("content","看上去很好吃01");
        lm.add(map);

        map=new HashMap<String, Object>();
        map.put("image",R.drawable.an2);
        map.put("name","美食图片02");
        map.put("content","看上去很好吃02");
        lm.add(map);

        map=new HashMap<String, Object>();
        map.put("image",R.drawable.an3);
        map.put("name","美食图片03");
        map.put("content","看上去很好吃03");
        lm.add(map);
        //1 数据源里key的数组
        String[] str={"image","name","content"};
        //2  layout文件里子视图的id
        int[] viewid = {R.id.iv_2,R.id.tv_1,R.id.tv_2 };


        SimpleAdapter sa = new SimpleAdapter(this,lm,R.layout.layout_simple,str,viewid);

        sa_1.setAdapter(sa);
    }
}

layout_simple.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <ImageView
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:src="@drawable/an1"
        android:id="@+id/iv_2"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_gravity="center_vertical"
        android:layout_marginLeft="20dp">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="美食图片"
            android:id="@+id/tv_1"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="很好吃的样子"
            android:id="@+id/tv_2"/>

    </LinearLayout>

</LinearLayout>