安卓ListView中CheckBox的使用（支持Item列表项的删除，全选，全不选）

ListView 自身提供了 CheckBox 只需要添加一行代码

getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);

但是这种实现想要自己控制操作起来局限很多。所以我选择了自己添加CheckBox的方式。可以支持列表项的全选，删除，并保持数据的对应关系不会乱。

 

列表中的CheckBox选中状态与一个Map进行绑定，利用 adapter.notifyDataSetChanged();来更新界面。

效果如下：

下面直接看代码把。

 

main.xml

 

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:background="#C9F1FF">
         <ListView
             android:id="@id/android:list"
             android:layout_height="wrap_content"
             android:layout_width="fill_parent"
             android:fadingEdge="none"
             android:cacheColorHint="#00000000"/>
         <RelativeLayout
             android:layout_width="fill_parent"
             android:layout_height="40.0dip"
             android:layout_alignParentBottom="true">
         <CheckBox android:id="@+id/all_check_btn"
             android:layout_width="40.0dip"
             android:background="@drawable/bottom_back_bg"
             android:layout_height="40.0dip"
             android:layout_alignParentLeft="true"/>
     </RelativeLayout>
 </RelativeLayout>

 

item.xml

 

 <?xml version="1.0" encoding="utf-8"?>
     <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
         android:layout_width="fill_parent" android:layout_height="wrap_content"
         android:layout_marginRight="3.0dip" android:layout_weight="1.0"
         android:orientation="horizontal" android:descendantFocusability="blocksDescendants">
         <CheckBox android:id="@+id/isCheakBox" android:layout_width="wrap_content" android:layout_height="wrap_content"
             android:layout_alignParentLeft="true" />
         <!-- 日报图片 -->
         <ImageView android:id="@+id/dailyPic" android:contentDescription="dailyPic"
             android:layout_width="wrap_content" android:layout_height="wrap_content"
             android:layout_marginTop="3.0dip" android:src="@drawable/reports"
             android:layout_toRightOf="@id/isCheakBox" android:layout_centerVertical="true"/>
         <!--附件名称 -->
         <TextView
             android:id="@+id/dailyName"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_toRightOf="@id/dailyPic"
             android:text="日报名称" android:layout_centerVertical="true"
             android:textColor="#000000"
             android:textSize="12.0sp" />
          <ImageButton android:id="@+id/deleteAttachment"
             android:layout_width="wrap_content" android:layout_height="wrap_content"
             android:layout_marginTop="3.0dip" android:background="@drawable/delete"
             android:layout_centerVertical="true" android:focusable="false"
             android:layout_alignParentRight="true" android:layout_marginRight="20dp"/>
         <!--附件名称 -->
     </RelativeLayout>

 

  Activity代码

 

 public class ListViewCheckBoxActivity extends ListActivity {
     private static final String TAG = "ListViewCheckBoxActivity";

     private List<Item> itemList;
     private DraftDailyAdapter adapter;
     private Map<Integer, Boolean> isCheckedMap;
     private CheckBox allCheckBox;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         allCheckBox = (CheckBox)findViewById(R.id.all_check_btn);
         itemList = new ArrayList<Item>();
         isCheckedMap = new HashMap<Integer, Boolean>();
         //初始化数据
         for(int i=0;i<8;i++){
             Item item = new Item();
             item.id=i;
             item.name = "第"+i+"篇日报";
             itemList.add(item);
             isCheckedMap.put(i,false);
         }

         adapter = new DraftDailyAdapter(this,itemList);
         setListAdapter(adapter);
         allCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                 Set<Integer> set = isCheckedMap.keySet();
                 Iterator<Integer> iterator = set.iterator();
                 if(isChecked){
                     while(iterator.hasNext()){
                         Integer keyId = iterator.next();
                         isCheckedMap.put(keyId,true);
                     }
                 }else{
                     while(iterator.hasNext()){
                         Integer keyId = iterator.next();
                         isCheckedMap.put(keyId,false);
                     }
                 }
                 adapter.notifyDataSetChanged();
             }
         });
     }

     class DraftDailyAdapter extends BaseAdapter {

         public List<Item> list;
         private Context context;
         LayoutInflater inflater;

         public DraftDailyAdapter(Context context, List<Item> list) {
             super();
             this.list = list;
             this.context = context;
             inflater = LayoutInflater.from(this.context);
         }
         @Override
         public int getCount() {
             return list == null ? 0 : list.size();
         }
         @Override
         public Object getItem(int location) {
             return list.get(location);
         }
         @Override
         public long getItemId(int position) {
             return position;
         }
         @Override
         public View getView(int position, View convertView, ViewGroup parent) {
             ViewHolder holder = null;
             Item item = list.get(position);
             //Item的位置
             final int listPosition = position;
             //这个记录item的id用于操作isCheckedMap来更新CheckBox的状态
             final int id = item.id;
             if(convertView == null){
                 holder = new ViewHolder();
                 convertView = inflater.inflate(R.layout.item, null);
                 holder.tvName = (TextView)convertView.findViewById(R.id.dailyName);
                 holder.deleteButton = (ImageButton)convertView.findViewById(R.id.deleteAttachment);
                 holder.cBox = (CheckBox)convertView.findViewById(R.id.isCheakBox);
                 convertView.setTag(holder);
             }else{
                 holder = (ViewHolder) convertView.getTag();
             }
             Log.d(TAG, "id="+id);
             holder.cBox.setChecked(isCheckedMap.get(id));
             holder.tvName.setText(item.name);
             holder.deleteButton.setOnClickListener(new OnClickListener() {
                 @Override
                 public void onClick(View paramView) {
                     //Log.d(TAG, "deletePosition="+listPosition+"");
                     //删除list中的数据
                     list.remove(listPosition);
                     //删除Map中对应选中状态数据
                     isCheckedMap.remove(id);
                     //通知列表数据修改
                     adapter.notifyDataSetChanged();
                 }
             });
             holder.cBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
                 @Override
                 public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                     if(isChecked){
                         isCheckedMap.put(id,true);
                     }else{
                         isCheckedMap.put(id,false);
                     }
                 }
             });
             return convertView;
         }
         public final class ViewHolder {
             public TextView tvName;
             public ImageButton deleteButton;
             public CheckBox cBox;
         }
     }

     class Item {
         private Integer id;
         private String name;
     }

 }

 

资源文件见附件源代码。

 

• ListViewCheckBox.rar (179.1 KB)
• 下载次数: 163

• 查看图片附件

转自  http://hhulijin.iteye.com/blog/1498580