本地数据下，radiobutton和图片组合，利用adapter+listview进行单选

浮生偷得半日闲，等接口定义的过程中，重新复习下adapter+listview实现单选的方法

主界面

 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="com.example.locallistviewradiobutton.MainActivity" >
10
11     <ListView
12         android:id="@+id/lv_radiobutton"
13         android:layout_width="match_parent"
14         android:layout_height="wrap_content"
15         android:divider="@null">
16
17     </ListView>
18
19 </RelativeLayout>

activity_listview.xml

 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="fill_parent"
 5     android:layout_height="match_parent"
 6     android:gravity="center"
 7     android:orientation="vertical" >
 8
 9     <LinearLayout
10         android:id="@+id/ll_rg"
11         android:layout_width="fill_parent"
12         android:layout_height="wrap_content"
13         android:orientation="horizontal"
14     android:background="#C6C6C6">
15
16     <RadioButton
17         android:id="@+id/rb_select"
18         android:layout_width="wrap_content"
19         android:layout_height="wrap_content"
20         android:layout_gravity="center"
21         android:focusable="false"/>
22
23     <TextView
24         android:id="@+id/tv_name"
25         android:layout_width="wrap_content"
26         android:layout_height="wrap_content"
27         android:layout_gravity="center"
28         android:text="name"
29         android:textSize="20sp"/>
30
31     <ImageView
32           android:id="@+id/iv_card"
33           android:layout_width="wrap_content"
34           android:layout_height="wrap_content"
35           android:scaleType="centerInside"
36           android:layout_marginLeft="20dp"
37           android:layout_marginRight="20dp"
38           android:layout_marginTop="2dp"
39           android:layout_marginBottom="2dp"
40           android:layout_gravity="left"
41           android:adjustViewBounds="true"
42           android:src="@drawable/ic_launcher" />
43
44     </LinearLayout>
45
46     <View
47         android:layout_width="fill_parent"
48         android:layout_height="10dp"
49         android:background="#ffffff" />
50
51 </LinearLayout>

MainActivity.java

 1 package com.example.locallistviewradiobutton;
 2
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 import android.view.View;
 6 import android.widget.AdapterView;
 7 import android.widget.ListView;
 8 import android.widget.AdapterView.OnItemClickListener;
 9
10
11 public class MainActivity extends Activity {
12     private ListView lv_radiobutton;
13     private RBlistAdapter adapter;
14     private String[] names = new String[] { "a","b","c","d","e" };
15
16     @Override
17     protected void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.activity_main);
20
21         lv_radiobutton = (ListView) findViewById(R.id.lv_radiobutton);
22         adapter = new RBlistAdapter(this, names);
23         lv_radiobutton.setAdapter(adapter);
24
25         //点击一行任意位置都能保证radiobutton选中
26         lv_radiobutton.setOnItemClickListener(new myOnItemClickListener());
27
28     }
29
30     private class myOnItemClickListener implements OnItemClickListener {
31         @Override
32         public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
33             adapter.index = position;//获取位置并传给adapter中的index（public变量）
34             adapter.notifyDataSetChanged();
35         }
36     }
37     public void onBackPressed() {
38         // TODO Auto-generated method stub
39         super.onBackPressed();
40     }
41
42 }

RBlistAdapter.java

 1 package com.example.locallistviewradiobutton;
 2
 3 import android.widget.BaseAdapter;
 4 import android.annotation.SuppressLint;
 5 import android.content.Context;
 6 import android.view.LayoutInflater;
 7 import android.view.View;
 8 import android.view.ViewGroup;
 9 import android.widget.CompoundButton;
10 import android.widget.CompoundButton.OnCheckedChangeListener;
11 import android.widget.RadioButton;
12 import android.widget.TextView;
13 import android.widget.Toast;
14
15 public class RBlistAdapter extends BaseAdapter{
16     private LayoutInflater inflater;
17     private String[] picspecies;
18     private viewHolder holder;
19     // 标记用户当前选择的那一个,默认为第一个:（0）
20     public int index = 0;
21     private Context c;
22
23     public RBlistAdapter(Context c, String[] picspecies) {
24         super();
25         this.c = c;
26         this.picspecies = picspecies;
27         inflater = LayoutInflater.from(c);
28     }
29
30     @Override
31     public int getCount() {
32         return picspecies.length;
33     }
34
35     @Override
36     public Object getItem(int position) {
37         return null;
38     }
39
40     @Override
41     public long getItemId(int position) {
42         return 0;
43     }
44
45     @SuppressLint("InflateParams") @Override
46     public View getView(final int position, View convertView, ViewGroup parent) {
47
48         holder = new viewHolder();
49         if (convertView == null) {
50             convertView = inflater.inflate(R.layout.activity_listview, null);
51             holder.nameTxt = (TextView) convertView.findViewById(R.id.tv_name);
52             holder.selectBtn = (RadioButton) convertView.findViewById(R.id.rb_select);
53             convertView.setTag(holder);
54         } else {
55             holder = (viewHolder) convertView.getTag();
56         }
57
58         holder.nameTxt.setText(picspecies[position]);
59         holder.selectBtn
60                 .setOnCheckedChangeListener(new OnCheckedChangeListener() {
61
62                     @Override
63                     public void onCheckedChanged(CompoundButton buttonView,
64                             boolean isChecked) {
65                         if (isChecked) {
66                             Toast.makeText(c, "您选择的是：" + picspecies[position],
67                                     Toast.LENGTH_SHORT).show();
68                             index = position;
69                             notifyDataSetChanged();
70                         }
71                     }
72                 });
73
74         if (index == position) {// 选中的条目和当前的条目是否相等
75             holder.selectBtn.setChecked(true);
76         } else {
77             holder.selectBtn.setChecked(false);
78         }
79         return convertView;
80     }
81
82     public class viewHolder {
83         public TextView nameTxt;
84         public RadioButton selectBtn;
85     }
86
87 }

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