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>
 
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