ListView
1.概念
（1）列表视图
（2）用来显示多个可滑动项列表的ViewGroup
（3）需要适配器Adapter将集合中数据和每一个Item所对应的布局动态适配到ListView中进行显示
2.适配器 Adaper
（1）API
（2）分类
3.监听器
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 <ListView 12 android:layout_width="match_parent" 13 android:layout_height="match_parent" 14 android:id="@+id/lv_1"> 15 16 </ListView> 17 18 </LinearLayout>
1 <?xml version="1.0" encoding="utf-8"?> 2 <TextView xmlns:android="http://schemas.android.com/apk/res/android" 3 android:layout_width="match_parent" 4 android:layout_height="wrap_content" 5 android:textSize="20sp" 6 android:paddingTop="10dp" 7 android:paddingBottom="10dp"/>
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 TestActivity7 extends AppCompatActivity {
9
10 ListView lv_1;
11
12 @Override
13 protected void onCreate(Bundle savedInstanceState) {
14 super.onCreate(savedInstanceState);
15 setContentView(R.layout.activity_test7);
16
17 ListView lv_1=(ListView)findViewById(R.id.lv_1);
18
19 //1.数据集合 layout
20 String[]strings={"A1","A2","A3","A4","A5","A6","A7","A8","A9",
21 "A1","A2","A3","A4","A5","A6","A7","A8","A9"};
22
23 //2.创建Adpter
24 ArrayAdapter<String> arrayAdapter=new ArrayAdapter<String>(this,R.layout.array_adapter,strings);
25
26 //3.绑定到LisView
27 lv_1.setAdapter(arrayAdapter);
28 }
29 }
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.TestActivity8"> 11 12 <ListView 13 android:layout_width="match_parent" 14 android:layout_height="match_parent" 15 android:id="@+id/lv_2"></ListView> 16 17 </LinearLayout>
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:orientation="horizontal" 4 android:layout_width="match_parent" 5 android:layout_height="match_parent"> 6 7 <ImageView 8 android:layout_width="70dp" 9 android:layout_height="70dp" 10 android:src="@drawable/f1" 11 android:id="@+id/iv_2"/> 12 <LinearLayout 13 android:layout_width="0dp" 14 android:layout_height="match_parent" 15 android:layout_weight="1" 16 android:orientation="vertical" 17 android:layout_marginLeft="20dp" 18 android:gravity="center_vertical"> 19 20 <TextView 21 android:layout_width="match_parent" 22 android:layout_height="wrap_content" 23 android:text="名字=aaa" 24 android:id="@+id/tv_7"/> 25 <TextView 26 android:layout_width="match_parent" 27 android:layout_height="wrap_content" 28 android:text="内容=aaa" 29 android:id="@+id/tv_8"/> 30 31 </LinearLayout> 32 33 </LinearLayout>
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 TestActivity8 extends AppCompatActivity {
14
15 ListView lv_2;
16
17 @Override
18 protected void onCreate(Bundle savedInstanceState) {
19 super.onCreate(savedInstanceState);
20 setContentView(R.layout.activity_test8);
21
22 lv_2=(ListView)findViewById(R.id.lv_2);
23
24 //1.数据集合 layout
25
26 List<Map<String,Object>> lm=new ArrayList<Map<String, Object>>();
27
28 Map<String,Object> map = new HashMap<String,Object>();
29 map.put("img",R.drawable.f1);
30 map.put("name","美食1");
31 map.put("content", "美食1的介绍");
32 lm.add(map);
33
34 map = new HashMap<String,Object>();
35 map.put("img",R.drawable.f2);
36 map.put("name","美食2");
37 map.put("content", "美食2的介绍");
38 lm.add(map);
39
40 map = new HashMap<String,Object>();
41 map.put("img",R.drawable.f3);
42 map.put("name","美食3");
43 map.put("content", "美食3的介绍");
44 lm.add(map);
45
46 map = new HashMap<String,Object>();
47 map.put("img",R.drawable.f4);
48 map.put("name","美食4");
49 map.put("content", "美食4的介绍");
50 lm.add(map);
51
52 map = new HashMap<String,Object>();
53 map.put("img",R.drawable.f5);
54 map.put("name","美食5");
55 map.put("content", "美食5的介绍");
56 lm.add(map);
57
58 map = new HashMap<String,Object>();
59 map.put("img",R.drawable.f6);
60 map.put("name","美食6");
61 map.put("content", "美食6的介绍");
62 lm.add(map);
63
64 map = new HashMap<String,Object>();
65 map.put("img",R.drawable.f7);
66 map.put("name","美食7");
67 map.put("content", "美食7的介绍");
68 lm.add(map);
69
70 map = new HashMap<String,Object>();
71 map.put("img",R.drawable.f8);
72 map.put("name","美食8");
73 map.put("content", "美食8的介绍");
74 lm.add(map);
75
76 map = new HashMap<String,Object>();
77 map.put("img",R.drawable.f9);
78 map.put("name","美食9");
79 map.put("content", "美食9的介绍");
80 lm.add(map);
81
82 map = new HashMap<String,Object>();
83 map.put("img",R.drawable.f10);
84 map.put("name","美食10");
85 map.put("content", "美食10的介绍");
86 lm.add(map);
87
88 //数组 key的数组
89 String[]strings={"img","name","content"};
90 int[]ids={R.id.iv_2,R.id.tv_7,R.id.tv_8};
91
92 //2.创建Simpleadapter
93 SimpleAdapter simpleAdapter=new SimpleAdapter(this,lm,R.layout.simple_adapter,strings,ids);
94
95 lv_2.setAdapter(simpleAdapter);
96 }
97 }
时间： 2024-10-06 15:50:43