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

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public class ListViewCheckBoxActivity extends ListActivity {
private static final String TAG = "ListViewCheckBoxActivity";
private List- itemList;
private DraftDailyAdapter adapter;
private Map
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- ();
isCheckedMap = new HashMap
();
//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 set = isCheckedMap.keySet();
Iterator 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- list;
private Context context;
LayoutInflater inflater;
public DraftDailyAdapter(Context context, List
- 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;
}
}
分享标题:安卓ListView中CheckBox的使用(支持Item列表项的删除,全选,全不选)
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