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

浏览数：29 / 时间：2015年06月11日

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：

技术分享

下面直接看代码把。

main.xml

Java代码

<?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

Java代码

<?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" />
<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"/>
<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"/>
</RelativeLayout>

Activity代码

Java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;
}
}