ListView控件(下)简单适配器

（一）

1.效果图

2.activiy_main.xml

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:paddingBottom="@dimen/activity_vertical_margin"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
     tools:context="com.example.app6.MainActivity">

     <ListView
         android:id="@+id/lv"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content" />
 </LinearLayout>

3.item.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="match_parent"
    android:orientation="horizontal">
    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/iv"/>
    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"></TextView>

</LinearLayout>

3.MianActivity.java

 package com.example.app6;

 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.widget.ListView;
 import android.widget.SimpleAdapter;

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

 public class MainActivity extends AppCompatActivity {
     private ListView listView;
     private List<Map<String,Object>> list;
     private Map<String,Object> map;
     private int[] pics = {R.drawable.apple,R.drawable.banana,R.drawable.orange};
     private String[] texts={"苹果","香蕉","橙子"};
     private SimpleAdapter simpleAdapter;

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

         listView = (ListView)findViewById(R.id.lv);
         //新建数据源
         list = new ArrayList<>();
         for(int i=0;i<3;i++){
             map = new HashMap<>();
             map.put("pic",pics[i]);
             map.put("text",texts[i]);
             list.add(map);

         }
         //新建适配器，适配器绑定数据
         simpleAdapter = new SimpleAdapter(MainActivity.this,list,R.layout.item,new String[]{"pic","text"},new int[]{R.id.iv,R.id.tv});

         //视图加载适配器
         listView.setAdapter(simpleAdapter);

     }
 }