Android——ListView
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1.ArryAdapter:
arry_adapter的layout文件：
1 <?xml version="1.0" encoding="utf-8"?> 2 3 4 <TextView xmlns:android="http://schemas.android.com/apk/res/android" 5 android:layout_width="match_parent" 6 android:layout_height="wrap_content" 7 android:textSize="20sp" 8 android:paddingTop="10dp" 9 android:paddingBottom="10dp"/>
activity_test6的layout文件：
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:tools="http://schemas.android.com/tools" 4 android:layout_width="match_parent" 5 android:layout_height="match_parent" 6 android:paddingBottom="@dimen/activity_vertical_margin" 7 android:paddingLeft="@dimen/activity_horizontal_margin" 8 android:paddingRight="@dimen/activity_horizontal_margin" 9 android:paddingTop="@dimen/activity_vertical_margin" 10 tools:context="com.hanqi.testapp2.TestActivity6"> 11 12 <ListView 13 android:layout_width="match_parent" 14 android:layout_height="match_parent" 15 android:id="@+id/lv_1"></ListView> 16 </LinearLayout>
java类：
1 package com.hanqi.testapp2; 2 3 import android.os.Bundle; 4 import android.support.v7.app.AppCompatActivity; 5 import android.widget.ArrayAdapter; 6 import android.widget.ListView; 7 8 public class TestActivity6 extends AppCompatActivity { 9 10 ListView lv_1; 11 @Override 12 protected void onCreate(Bundle savedInstanceState) { 13 super.onCreate(savedInstanceState); 14 setContentView(R.layout.activity_test6); 15 ListView lv_1 = (ListView)findViewById(R.id.lv_1); 16 17 //1.数据集合 layout文件 18 String[] strings = {"A1","A2","A3","A4","A5","A6","A7","A8","A9", 19 "A1","A2","A3","A4","A5","A6","A7","A8","A9"}; 20 //2.创建Adpter 21 ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,R.layout.arry_adapter,strings); 22 //3.绑定到ListView 23 lv_1.setAdapter(arrayAdapter); 24 } 25 }
效果图：
2.SimpleAdapter：
simple_adapter的layout文件：
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:orientation="horizontal" android:layout_width="match_parent" 4 android:layout_height="match_parent"> 5 6 <ImageView 7 android:layout_width="70dp" 8 android:layout_height="70dp" 9 android:src="@drawable/f1" 10 android:id="@+id/iv_2"/> 11 <LinearLayout 12 android:layout_width="0dp" 13 android:layout_height="match_parent" 14 android:orientation="vertical" 15 android:layout_weight="1" 16 android:layout_marginLeft="20dp" 17 android:gravity="center_vertical"> 18 <TextView 19 android:layout_width="match_parent" 20 android:layout_height="wrap_content" 21 android:text="名字=aaa" 22 android:id="@+id/tv_7"/> 23 <TextView 24 android:layout_width="match_parent" 25 android:layout_height="wrap_content" 26 android:text="内容=aaa" 27 android:id="@+id/tv_8"/> 28 </LinearLayout> 29 </LinearLayout>
activity_test7的layout文件：
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:tools="http://schemas.android.com/tools" 4 android:layout_width="match_parent" 5 android:layout_height="match_parent" 6 android:paddingBottom="@dimen/activity_vertical_margin" 7 android:paddingLeft="@dimen/activity_horizontal_margin" 8 android:paddingRight="@dimen/activity_horizontal_margin" 9 android:paddingTop="@dimen/activity_vertical_margin" 10 tools:context="com.hanqi.testapp2.TestActivity7"> 11 12 <ListView 13 android:layout_width="match_parent" 14 android:layout_height="match_parent" 15 android:id="@+id/lv_2"></ListView> 16 </LinearLayout>
java类：
1 package com.hanqi.testapp2; 2 3 import android.os.Bundle; 4 import android.support.v7.app.AppCompatActivity; 5 import android.widget.ListView; 6 import android.widget.SimpleAdapter; 7 8 import java.util.ArrayList; 9 import java.util.HashMap; 10 import java.util.List; 11 import java.util.Map; 12 13 public class TestActivity7 extends AppCompatActivity { 14 15 ListView lv_2; 16 @Override 17 protected void onCreate(Bundle savedInstanceState) { 18 super.onCreate(savedInstanceState); 19 setContentView(R.layout.activity_test7); 20 lv_2 = (ListView)findViewById(R.id.lv_2); 21 //1.数据集合 layout 22 List<Map<String,Object>> lm = new ArrayList<Map<String,Object>>(); 23 Map<String,Object> map = new HashMap<String,Object>(); 24 map.put("img",R.drawable.f1); 25 map.put("name","美食1"); 26 map.put("content","美食1的介绍"); 27 lm.add(map); 28 29 map = new HashMap<String,Object>(); 30 map.put("img",R.drawable.f2); 31 map.put("name","美食2"); 32 map.put("content","美食2的介绍"); 33 lm.add(map); 34 35 map = new HashMap<String,Object>(); 36 map.put("img",R.drawable.f3); 37 map.put("name","美食3"); 38 map.put("content","美食3的介绍"); 39 lm.add(map); 40 41 map = new HashMap<String,Object>(); 42 map.put("img",R.drawable.f4); 43 map.put("name","美食4"); 44 map.put("content","美食4的介绍"); 45 lm.add(map); 46 47 map = new HashMap<String,Object>(); 48 map.put("img",R.drawable.f5); 49 map.put("name","美食5"); 50 map.put("content","美食5的介绍"); 51 lm.add(map); 52 53 map = new HashMap<String,Object>(); 54 map.put("img",R.drawable.f6); 55 map.put("name","美食6"); 56 map.put("content","美食6的介绍"); 57 lm.add(map); 58 59 map = new HashMap<String,Object>(); 60 map.put("img",R.drawable.f8); 61 map.put("name","美食8"); 62 map.put("content","美食8的介绍"); 63 lm.add(map); 64 65 map = new HashMap<String,Object>(); 66 map.put("img",R.drawable.f9); 67 map.put("name","美食9"); 68 map.put("content","美食9的介绍"); 69 lm.add(map); 70 71 map = new HashMap<String,Object>(); 72 map.put("img",R.drawable.f10); 73 map.put("name","美食10"); 74 map.put("content","美食10的介绍"); 75 lm.add(map); 76 //数组 key的数组 77 String[]strings = {"img","name","content"}; 78 int[]ids = {R.id.iv_2,R.id.tv_7,R.id.tv_8}; 79 //2.创建Adapter 80 SimpleAdapter simpleAdapter = new SimpleAdapter(this, 81 lm,R.layout.simple_adapter,strings,ids); 82 lv_2.setAdapter(simpleAdapter); 83 } 84 }
效果图：
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