Android——ListView

1.ArryAdapter:

arry_adapter的layout文件：

 <?xml version="1.0" encoding="utf-8"?>

     <TextView xmlns:android="http://schemas.android.com/apk/res/android"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:textSize="20sp"
     android:paddingTop="10dp"
     android:paddingBottom="10dp"/>

activity_test6的layout文件：

 <?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.hanqi.testapp2.TestActivity6">

     <ListView
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:id="@+id/lv_1"></ListView>
 </LinearLayout>

java类：

 package com.hanqi.testapp2;

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

 public class TestActivity6 extends AppCompatActivity {

     ListView lv_1;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_test6);
         ListView lv_1 = (ListView)findViewById(R.id.lv_1);

         //1.数据集合  layout文件
         String[] strings  = {"A1","A2","A3","A4","A5","A6","A7","A8","A9",
                 "A1","A2","A3","A4","A5","A6","A7","A8","A9"};
         //2.创建Adpter
         ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,R.layout.arry_adapter,strings);
         //3.绑定到ListView
         lv_1.setAdapter(arrayAdapter);
     }
 }

效果图：

2.SimpleAdapter：

simple_adapter的layout文件：

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

     <ImageView
         android:layout_width="70dp"
         android:layout_height="70dp"
         android:src="@drawable/f1"
         android:id="@+id/iv_2"/>
     <LinearLayout
         android:layout_width="0dp"
         android:layout_height="match_parent"
         android:orientation="vertical"
         android:layout_weight="1"
         android:layout_marginLeft="20dp"
         android:gravity="center_vertical">
         <TextView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:text="名字=aaa"
             android:id="@+id/tv_7"/>
         <TextView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:text="内容=aaa"
             android:id="@+id/tv_8"/>
     </LinearLayout>
 </LinearLayout>

activity_test7的layout文件：

 <?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.hanqi.testapp2.TestActivity7">

     <ListView
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:id="@+id/lv_2"></ListView>
 </LinearLayout>

java类：

 package com.hanqi.testapp2;

 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 TestActivity7 extends AppCompatActivity {

     ListView lv_2;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_test7);
         lv_2 = (ListView)findViewById(R.id.lv_2);
         //1.数据集合  layout
         List<Map<String,Object>> lm = new ArrayList<Map<String,Object>>();
         Map<String,Object> map = new HashMap<String,Object>();
         map.put("img",R.drawable.f1);
         map.put("name","美食1");
         map.put("content","美食1的介绍");
         lm.add(map);

         map = new HashMap<String,Object>();
         map.put("img",R.drawable.f2);
         map.put("name","美食2");
         map.put("content","美食2的介绍");
         lm.add(map);

         map = new HashMap<String,Object>();
         map.put("img",R.drawable.f3);
         map.put("name","美食3");
         map.put("content","美食3的介绍");
         lm.add(map);

         map = new HashMap<String,Object>();
         map.put("img",R.drawable.f4);
         map.put("name","美食4");
         map.put("content","美食4的介绍");
         lm.add(map);

         map = new HashMap<String,Object>();
         map.put("img",R.drawable.f5);
         map.put("name","美食5");
         map.put("content","美食5的介绍");
         lm.add(map);

         map = new HashMap<String,Object>();
         map.put("img",R.drawable.f6);
         map.put("name","美食6");
         map.put("content","美食6的介绍");
         lm.add(map);

         map = new HashMap<String,Object>();
         map.put("img",R.drawable.f8);
         map.put("name","美食8");
         map.put("content","美食8的介绍");
         lm.add(map);

         map = new HashMap<String,Object>();
         map.put("img",R.drawable.f9);
         map.put("name","美食9");
         map.put("content","美食9的介绍");
         lm.add(map);

         map = new HashMap<String,Object>();
         map.put("img",R.drawable.f10);
         map.put("name","美食10");
         map.put("content","美食10的介绍");
         lm.add(map);
         //数组 key的数组
         String[]strings = {"img","name","content"};
         int[]ids = {R.id.iv_2,R.id.tv_7,R.id.tv_8};
         //2.创建Adapter
         SimpleAdapter simpleAdapter = new SimpleAdapter(this,
                 lm,R.layout.simple_adapter,strings,ids);
         lv_2.setAdapter(simpleAdapter);
     }
 }

效果图：