ANDROID笔记:ListView和CheckBox的简单使用 

 1 package com.example.adaptertest;
 2 
 3 import java.util.ArrayList;
 4 import java.util.List;
 5 
 6 import android.app.Activity;
 7 import android.os.Bundle;
 8 import android.view.Menu;
 9 import android.view.View;
10 import android.view.View.OnClickListener;
11 import android.widget.Button;
12 import android.widget.CheckBox;
13 import android.widget.CompoundButton;
14 import android.widget.CompoundButton.OnCheckedChangeListener;
15 import android.widget.ListView;
16 
17 public class MainActivity extends Activity {
18     @Override
19     protected void onCreate(Bundle savedInstanceState) {
20         super.onCreate(savedInstanceState);
21         setContentView(R.layout.activity_main);
22         // 找到listview
23         ListView listView = (ListView) findViewById(R.id.list);
24         // 加载数据
25         String[] strings = getResources().getStringArray(R.array.list);
26         // arrayadapter适配器
27 
28         // ArrayAdapter<String> adapter = new ArrayAdapter<String>(
29         // MainActivity.this, R.layout.list_item_1, strings);
30         // listView.setAdapter(adapter);
31         //
32 
33         // simpleadapter适配器
34         /*
35          * List<Map<String, String>> objList = new ArrayList<Map<String,
36          * String>>(); Map<String, String> map = new HashMap<String, String>();
37          * map.put("id", "1"); map.put("name", "zhansan"); map.put("sex", "男");
38          * 
39          * Map<String, String> map1 = new HashMap<String, String>();
40          * map1.put("id", "2"); map1.put("name", "hua"); map1.put("sex", "女");
41          * 
42          * objList.add(map);
43          * 
44          * objList.add(map1);
45          * 
46          * SimpleAdapter simpleAdapter = new SimpleAdapter(MainActivity.this,
47          * objList, R.layout.list_item_2, new String[] { "id", "name", "sex" },
48          * new int[] { R.id.id, R.id.name, R.id.sex });
49          * listView.setAdapter(simpleAdapter);
50          */
51         // 自定义Adapter
52         final CheckBox box = (CheckBox) findViewById(R.id.idcheck);
53         final List<Student> students = new ArrayList<Student>();
54         final MyAdapter adapter2 = new MyAdapter(MainActivity.this, students);
55         students.add(new Student("1", "aa", "男", false));
56         students.add(new Student("2", "bb", "男", false));
57         students.add(new Student("3", "cc", "女", false));
58         Button addButton = (Button) findViewById(R.id.btn_add);
59         addButton.setOnClickListener(new OnClickListener() {
60 
61             @Override
62             public void onClick(View v) {
63                 students.add(new Student((students.size() + 1) + "", "aa", "男",
64                         false));
65                 // 通知适配器更新数据
66                 adapter2.notifyDataSetChanged();
67             }
68         });
69         listView.setAdapter(adapter2);
70         listView.setSelection(students.size() - 1);
71         box.setOnCheckedChangeListener(new OnCheckedChangeListener() {
72             @Override
73             public void onCheckedChanged(CompoundButton buttonView,
74                     boolean isChecked) {
75                 // 全选
76                 for (Student student : students) {
77                     student.setState(isChecked);
78                 }
79                 // 通知适配器更新数据
80                 adapter2.notifyDataSetChanged();
81 
82             }
83         });
84 
85     }
86 
87     @Override
88     public boolean onCreateOptionsMenu(Menu menu) {
89         // Inflate the menu; this adds items to the action bar if it is present.
90         getMenuInflater().inflate(R.menu.main, menu);
91         return true;
92     }
93 
94 }
 1 package com.example.adaptertest;
 2 
 3 import java.util.List;
 4 
 5 import android.content.Context;
 6 import android.view.LayoutInflater;
 7 import android.view.View;
 8 import android.view.ViewGroup;
 9 import android.widget.BaseAdapter;
10 import android.widget.CheckBox;
11 import android.widget.CompoundButton;
12 import android.widget.TextView;
13 import android.widget.CompoundButton.OnCheckedChangeListener;
14 
15 public class MyAdapter extends BaseAdapter {
16     private List<Student> list = null;
17     private LayoutInflater inflater = null;
18     private View view = null;
19 
20     public MyAdapter(Context context, List<Student> list) {
21         this.list = list;
22         inflater = LayoutInflater.from(context);
23     }
24 
25     // 返回listView数据的条数
26     @Override
27     public int getCount() {
28         // TODO Auto-generated method stub
29         return list.size();
30     }
31 
32     @Override
33     public Object getItem(int position) {
34         // TODO Auto-generated method stub
35         return list.get(position);
36     }
37 
38     @Override
39     public long getItemId(int position) {
40         // TODO Auto-generated method stub
41         return position;
42     }
43 
44     @Override
45     public View getView(int position, View convertView, ViewGroup parent) {
46         // TODO Auto-generated method stub
47         // 获取布局
48         view = inflater.inflate(R.layout.list_item_2, null);
49         TextView id = (TextView) view.findViewById(R.id.id);
50         TextView name = (TextView) view.findViewById(R.id.name);
51         TextView sexTextView = (TextView) view.findViewById(R.id.sex);
52         final CheckBox box = (CheckBox) view.findViewById(R.id.check);
53         final Student student = list.get(position);
54         box.setOnCheckedChangeListener(new OnCheckedChangeListener() {
55             @Override
56             public void onCheckedChanged(CompoundButton buttonView,
57                     boolean isChecked) {
58                 student.setState(isChecked);
59             }
60         });
61         // 控件和数据的匹配
62         id.setText(student.getId());
63         name.setText(student.getName());
64         sexTextView.setText(student.getSexString());
65         box.setChecked(student.isState());
66         return view;
67     }
68 
69 }
 1 package com.example.adaptertest;
 2 
 3 public class Student {
 4     private String id;
 5     private String name;
 6     private String sexString;
 7     private boolean state;
 8     
 9     public Student(String id, String name, String sexString, boolean state) {
10         super();
11         this.id = id;
12         this.name = name;
13         this.sexString = sexString;
14         this.state = state;
15     }
16 
17     public String getId() {
18         return id;
19     }
20 
21     public void setId(String id) {
22         this.id = id;
23     }
24 
25     public String getName() {
26         return name;
27     }
28 
29     public void setName(String name) {
30         this.name = name;
31     }
32 
33     public String getSexString() {
34         return sexString;
35     }
36 
37     public void setSexString(String sexString) {
38         this.sexString = sexString;
39     }
40 
41     public boolean isState() {
42         return state;
43     }
44 
45     public void setState(boolean state) {
46         this.state = state;
47     }
48 
49 }

activity_main.xml

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:paddingBottom="@dimen/activity_vertical_margin"
 6     android:paddingLeft="@dimen/activity_horizontal_margin"
 7     android:paddingRight="@dimen/activity_horizontal_margin"
 8     android:paddingTop="@dimen/activity_vertical_margin"
 9     tools:context=".MainActivity" >
10 
11     <LinearLayout
12         android:id="@+id/linear"
13         android:layout_width="fill_parent"
14         android:layout_height="wrap_content" >
15 
16         <CheckBox
17             android:id="@+id/idcheck"
18             android:layout_width="wrap_content"
19             android:layout_height="wrap_content" />
20     </LinearLayout>
21 
22     <Button
23         android:id="@+id/btn_add"
24         android:layout_width="wrap_content"
25         android:layout_height="wrap_content"
26         android:layout_alignParentBottom="true"
27         android:text="添加" />
28 
29     <ListView
30         android:id="@+id/list"
31         android:layout_width="fill_parent"
32         android:layout_height="wrap_content"
33         android:layout_above="@id/btn_add"
34         android:layout_below="@id/linear" >
35     </ListView>
36 
37 </RelativeLayout>

list_item_2.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="fill_parent"
 4     android:layout_height="50dp"
 5     android:orientation="horizontal" >
 6 
 7     <CheckBox
 8         android:id="@+id/check"
 9         android:layout_width="wrap_content"
10         android:layout_height="wrap_content" />
11 
12     <TextView
13         android:id="@+id/id"
14         android:layout_width="wrap_content"
15         android:layout_height="wrap_content"
16         android:layout_weight="1" />
17 
18     <TextView
19         android:id="@+id/name"
20         android:layout_width="wrap_content"
21         android:layout_height="wrap_content"
22         android:layout_weight="1" />
23 
24     <TextView
25         android:id="@+id/sex"
26         android:layout_width="wrap_content"
27         android:layout_height="wrap_content"
28         android:layout_gravity="right"
29         android:layout_weight="1" />
30 
31 </LinearLayout>

 

posted @ 2013-10-17 09:56  skyko  阅读(3609)  评论(0)  编辑  收藏  举报