android 应用之listview添加radiobutton，获取textView

程序效果：

点击一整行，更换radiobutton选择。

xml代码：

 

java代码：

import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.app.ListActivity; import android.os.Bundle; import android.view.View; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.Toast; public class listRadioBtn extends ListActivity { /** Called when the activity is first created. */ private int balanceIndex = 0; SimpleAdapter adapter; List> list; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); adapter= new SimpleAdapter(this,getData(),R.layout.main,new String[]{"text","img"},new int[]{R.id.list_text,R.id.list_radioImg}); setListAdapter(adapter); } private List> getData(){ list = new ArrayList>(); Map map_day = new HashMap(); map_day.put("text", "白天"); map_day.put("img", R.drawable.setlist_radio_on); list.add(map_day); Map map_clody = new HashMap(); map_clody.put("text", "阴天"); map_clody.put("img", R.drawable.setlist_radio_off); list.add(map_clody); Map map_clo = new HashMap(); map_clo.put("text", "微风"); map_clo.put("img", R.drawable.setlist_radio_off); list.add(map_clo); return list; } protected void onListItemClick(ListView arg0, View arg1, int arg2, long arg3) { Toast t = Toast.makeText(this, ""+list.get(arg2).get("text"), Toast.LENGTH_LONG); t.show(); ChangeRadioImg(balanceIndex,false); ChangeRadioImg(arg2,true); balanceIndex=arg2; list.get(arg2).get("text"); } private void ChangeRadioImg(int selectedItem, boolean b) { SimpleAdapter la = adapter; HashMap map = (HashMap)la.getItem(selectedItem); if(b) map.put("img", R.drawable.setlist_radio_on); else map.put("img", R.drawable.setlist_radio_off); la.notifyDataSetChanged(); } }

 

二

另一个简单办法：

android系统中，提供了这样的方法

mylist.setChoiceMode(ListView.CHOICE_MODE_SINGLE);

 

程序主代码：

protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.list_layout); contentString = new String[] { "示例", "透明动画", "伸缩动画", "移动动画", "旋转动画", "透明_伸缩", "透明_移动", "透明_旋转" }; arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_single_choice, contentString); mylist = (ListView) findViewById(R.id.ListView01); mylist.setAdapter(arrayAdapter); mylist.setOnItemClickListener(this); mylist.setOnItemSelectedListener(this); mylist.setChoiceMode(ListView.CHOICE_MODE_SINGLE); mylist.setItemChecked(0, true); }

其中，android.R.layout.simple_list_item_single_choice在framework/base/core/res/res/layout目录下，可参见源码

 

 

三 多选框

import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.ListView; public class ListCheckbox extends Activity implements OnItemClickListener,OnItemSelectedListener{ private String contentString[]; ArrayAdapter arrayAdapter; ListView mylist; protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.main); contentString = new String[] { "示例", "透明动画", "伸缩动画", "移动动画", "旋转动画", "透明_伸缩", "透明_移动", "透明_旋转" }; arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_multiple_choice,//.simple_list_item_single_choice, contentString); mylist = (ListView) findViewById(R.id.ListView01); mylist.setAdapter(arrayAdapter); mylist.setOnItemClickListener(this); mylist.setOnItemSelectedListener(this); mylist.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);//.CHOICE_MODE_SINGLE); mylist.setItemChecked(0, true); } public void onItemSelected(AdapterView arg0, View arg1, int arg2,long arg3) { mylist.setItemChecked(arg2, true); } public void onNothingSelected(AdapterView arg0) { // TODO Auto-generated method stub } public void onItemClick(AdapterView arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub } }

 

main.xml