[英]In Listview loosing the state of checkbox
當我滾動listview
,我選擇的checkbox's
被互換
我的適配器類:
public class AdapterInvitePartner extends ArrayAdapter<FindPartnerPojo> {
private LayoutInflater inflater;
private List<FindPartnerPojo> objectList;
private List<String> checkboxCheckedList= new ArrayList<String>();
int i = 0;
public AdapterInvitePartner(Context context, int textViewResourceId,
List<FindPartnerPojo> objects) {
super(context, R.layout.items_find_partners, objects);
this.objectList = objects;
this.inflater = LayoutInflater.from(context);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
FindPartnerPojo item = objectList.get(position);
final String id=item.getUserid();
if (convertView == null) {
convertView = inflater.inflate(R.layout.items_find_partners, null);
holder = new ViewHolder();
holder.partner_email_addr_textview = (TextView) convertView
.findViewById(R.id.textView_partner_email_addr);
holder.partner_phone_number_textview = (TextView) convertView
.findViewById(R.id.textView_partner_phone_number);
holder.checkbox = (CheckBox) convertView
.findViewById(R.id.partner_checkBox);
holder.checkbox
.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
checkboxCheckedList.add(id);
} else {
checkboxCheckedList.remove(id);
}
}
});
convertView.setTag(holder);
i++;
}
// if it's exist convertView then consume it
else {
holder = (ViewHolder) convertView.getTag();
}
holder.partner_email_addr_textview.setText(item.getEmail());
holder.partner_phone_number_textview.setText(item.getPhone_number());
return convertView;
}
static class ViewHolder {
TextView partner_email_addr_textview, partner_phone_number_textview;
CheckBox checkbox;
}
public List<String> getCheckBoxList() {
return checkboxCheckedList;
}
}
設置適配器:
adapter = new AdapterInvitePartner(getApplicationContext(),
R.layout.items_find_partners, Constant.findpartnerlList);
partner_listview.setAdapter(adapter);
partner_listview.setCacheColorHint(0);
您必須手動重置復選框的值,因為convertView會被回收。
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
FindPartnerPojo item = objectList.get(position);
final String id=item.getUserid();
if (convertView == null) {
convertView = inflater.inflate(R.layout.items_find_partners, null);
holder = new ViewHolder();
holder.partner_email_addr_textview = (TextView) convertView
.findViewById(R.id.textView_partner_email_addr);
holder.partner_phone_number_textview = (TextView) convertView
.findViewById(R.id.textView_partner_phone_number);
holder.checkbox = (CheckBox) convertView
.findViewById(R.id.partner_checkBox);
convertView.setTag(holder);
i++;
}
// if it's exist convertView then consume it
else {
holder = (ViewHolder) convertView.getTag();
}
holder.partner_email_addr_textview.setText(item.getEmail());
holder.partner_phone_number_textview.setText(item.getPhone_number());
**holder.checkbox
.setOnCheckedChangeListener(null);
holder.checkbox.setChecked(the_original_value);**
holder.checkbox
.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
checkboxCheckedList.add(id);
} else {
checkboxCheckedList.remove(id);
}
}
});
return convertView;
}
由於視圖回收,您必須設置所有可以在getView中顯式更改的屬性。 特別是,檢查狀態:
holder.checkbox.setChecked(checkboxCheckedList.contains(id));
如果之前已經檢查過,將選中該復選框。
@Override
public int getViewTypeCount() {
return getCount();
}
@Override
public int getItemViewType(int position) {
return position;
}
將這兩種方法添加到您的適配器。 從這里
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.