简单适配器 SimpleAdapter应用, 也叫“并不简单的简单适配器”^_^
package com.basic.android08;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
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 MainActivity extends AppCompatActivity {
//获取测试数据源
private int[] images={R.drawable.bird,R.drawable.cat,R.drawable.chicken,R.drawable.cow,R.drawable.dog};
private String[] titles={"bird","cat","chicken","cow","dog"};
//定义ListView 控件
private ListView lv_main_list;
private SimpleAdapter dapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv_main_list = findViewById(R.id.lv_main_list);
List<Map<String,Object>> imageList = new ArrayList<>();
Map<String,Object> map = null;
for (int i = 0; i < images.length; i++) {
map = new HashMap<>();
map.put("title",titles[i]);
map.put("image",images[i]);
imageList.add(map);
}
// 创建适配器
dapter = new SimpleAdapter(this,imageList,
R.layout.item_listview,new String[]{"title","image"},new int[]{R.id.tv_item_listview_title,R.id.iv_item_listview_icon});
// 绑定适配器
lv_main_list.setAdapter(simpleAdapter2);
}
}```
//用Android自带的文件产生效果
<?xml version="1.0" encoding="UTF-8"?>
-<LinearLayout tools:context="com.basic.android08.MainActivity" android:layout_height="match_parent" android:layout_width="match_parent" xmlns:tools="http://schemas.android.com/tools" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:android="http://schemas.android.com/apk/res/android">
<ListView android:layout_height="match_parent" android:layout_width="match_parent" android:id="@+id/lv_main_list"/>
</LinearLayout>
自定义背景:
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout android:layout_height="match_parent" android:layout_width="match_parent" xmlns:android="http://schemas.android.com/apk/res/android">
<ImageView android:layout_height="66dp" android:layout_width="66dp" android:id="@+id/iv_item_listview_icon"/>
<TextView android:layout_height="66dp" android:layout_width="0dp" android:id="@+id/tv_item_listview_title" android:textSize="25sp" android:layout_weight="1"/>
</LinearLayout>