checkbox选中的值在翻屏时会跳来跳去

其实就是红色的地方是关键点，用了一个集合来保存cb的选择状态，其它的关于viewHolder和和inflate的布局什么就不说了

 

Activity界面代码  

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

 

import android.app.Activity;

import android.content.Context;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.CheckBox;

import android.widget.CompoundButton;

importandroid.widget.CompoundButton.OnCheckedChangeListener;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.TextView;

 

public class ListViewCheckboxActivity extendsActivity implements OnCheckedChangeListener {

 

private ListView listView;

privateList<Map<String,Object>> list;

private CheckBox cball;

ListViewAdapter adapter;

 

@Override

protected void onCreate(Bundle savedInstanceState){

 super.onCreate(savedInstanceState);

 setContentView(R.layout.main);

 

  listView = (ListView)findViewById(R.id.lv);

  cball = (CheckBox)findViewById(R.id.cball);

 cball.setOnCheckedChangeListener(this);//全选

 

  list = buildList();

  adapter = newListViewAdapter(this, list);

 listView.setAdapter(adapter);

}

 

privateList<Map<String,Object>> buildList() {

 List<Map<String,Object>> list = newArrayList<Map<String,Object>>();

  for (int i = 0; i< 20; i++) {

  Map<String, Object> map = newHashMap<String, Object>();

  map.put("icon", R.drawable.icon);

  map.put("title", "主题" + (i + 1));

  list.add(map);

  }

  return list;

}

 

class ListViewAdapter extends BaseAdapter {

  private Context context;

privateList<Map<String,Object>> list;

  private LayoutInflaterinflater;

  privateList<Boolean> checkBoxesStatus;

 

 

  public ListViewAdapter(Contextcontext, List<Map<String,Object>> list) {

   super();

   this.context =context;

   this.list =list;

   int listsize =list.size();

  checkBoxesStatus = newArrayList<Boolean>(listsize);

   for(int i =0;i<list.size();i++){

   checkBoxesStatus.add(false);

   }

   this.inflater= LayoutInflater.from(context);

  }

 

  publicList<Map<String,Object>> getList() {

   returnlist;

  }

  publicList<Boolean> getCheckBoxesStatus(){

   returncheckBoxesStatus;

  }

  @Override

  public int getCount() {

   returnlist.size();

  }

 

  @Override

  public Object getItem(intposition) {

   returnlist.get(position);

  }

 

  @Override

  public long getItemId(intposition) {

   returnposition;

  }

 

  @Override

  public View getView(final intposition, View convertView, ViewGroup parent) {

  

   ViewHolderviewHolder = null;

  Map<String, Object> map =list.get(position);

   BooleancheckBoxStatus = checkBoxesStatus.get(position);

   if(convertView == null) {

    convertView= inflater.inflate(R.layout.list_item, null);

    viewHolder =new ViewHolder();

   viewHolder.img = (ImageView)convertView.findViewById(R.id.icon);

   viewHolder.tv = (TextView)convertView.findViewById(R.id.title);

   viewHolder.cb = (CheckBox) convertView.findViewById(R.id.cb);

   convertView.setTag(viewHolder);

   }else{

    viewHolder =(ViewHolder) convertView.getTag();

   }

  

  viewHolder.img.setImageResource((Integer) map.get("icon"));

  viewHolder.tv.setText((String) map.get("title"));

  

  viewHolder.cb.setId(position);

  viewHolder.cb.setChecked(checkBoxStatus);

  viewHolder.cb.setOnCheckedChangeListener(newOnCheckedChangeListener() {

   @Override

    public voidonCheckedChanged(CompoundButton buttonView, boolean isChecked){

    checkBoxesStatus.set(buttonView.getId(), isChecked);

    notifyDataSetChanged();

    }

   });

   returnconvertView;

  }

}

 

static class ViewHolder {

  private ImageView img;

  private TextView tv;

  private CheckBox cb;

}

 

@Override

public void onCheckedChanged(CompoundButtonbuttonView, boolean isChecked){

 List<Boolean> checkBoxesStatus =adapter.getCheckBoxesStatus();

  for(int i =0;i<list.size();i++){

  checkBoxesStatus.set(i, isChecked);

  }

 adapter.notifyDataSetChanged();

}