Android ListView单选CheckBox

思路

1触发事件setOnItemClickListener改变CheckBox

2在适配器的getView()里改变CheckBox状态，需要记录选中的CheckBox位置

3适配器提供方法改变CheckBox

4用notifyDataSetChanged启动getView()

实现代码

//适配器
public class MyAdapter extends BaseAdapter {
// 填充数据的list
private ArrayList<Map<String, Object>> list;
// 用来控制CheckBox的选中状况
private HashMap<Integer,Boolean> isSelected;
// 上下文
private Context context;
// 用来导入布局
private LayoutInflater inflater = null;

// 构造器
public MyAdapter(ArrayList<Map<String, Object>> list, Context context) {
this.context = context;
this.list = list;
inflater = LayoutInflater.from(context);
isSelected = new HashMap<Integer, Boolean>();
// 初始化数据
initDate();
}

// 初始化isSelected的数据
private void initDate(){
for(int i=0; i<list.size();i++) {
getIsSelected().put(i,false);
}
}

@Override
public int getCount() {
return list.size();
}

@Override
public Object getItem(int position) {
return list.get(position);
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

// 导入布局并赋值给convertview
convertView = inflater.inflate(R.layout.item_exchange_self, null);
TextView tv_name = (TextView) convertView.findViewById(R.id.exchange_self_name);
TextView tv_address = (TextView) convertView.findViewById(R.id.exchange_self_address);
TextView tv_date = (TextView) convertView.findViewById(R.id.exchange_self_date);
CheckBox checkBox = (CheckBox) convertView.findViewById(R.id.select_address);
// 设置list中TextView的显示
tv_name.setText(list.get(position).get("name").toString());
tv_address.setText(list.get(position).get("address").toString());
tv_date.setText(list.get(position).get("workDates").toString());
// 根据isSelected来设置checkbox的选中状况
checkBox.setChecked(getIsSelected().get(position));
return convertView;
}

public HashMap<Integer,Boolean> getIsSelected() {
return isSelected;
}

public void setIsSelected(int postiton) {
initDate();
this.isSelected.put(postiton, true);
notifyDataSetChanged();
}
}

//ListView
ListView exchangeCenters = (ListView) findViewById(R.id.exchange_centers);
final MyAdapter myadapter = new MyAdapter(getData(),this);
exchangeCenters.setAdapter(myadapter);
exchangeCenters.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
myadapter.setIsSelected(position);
exchangeCenter = getData().get(position);
}
});

布局的注意事项

1.CheckBox自身的点击要关闭，添加属性android:clickable=”false”

2.item的总部局需要加android:descendantFocusability=”blocksDescendants”保证ListView点击事件正常

3.ListView属性加android:layout_weight=”1”保证不会覆盖下方的按钮