带有checkedtextview的Android listview

Question

我和CheckedTextView有一个列表视图。我希望在选择项目时将其值添加到列表中，并在取消选择时从列表中删除该值。我不知道为什么我不能得到准确的值。提前感谢......

以下是我的代码

      listview.setOnItemClickListener(new OnItemClickListener() {

                            @Override
                            public void onItemClick(AdapterView<?> parent,
                                    View view, int position, long id) {



                                CheckedTextView ctv=(CheckedTextView)view.findViewById(R.id.addonsItem);

                            if (ctv.isChecked()) {

                                Temp.addonsIdList.add(addonsiDList.get(position));
                                Temp.addonsNameList.add(addonsList.get(position));
                                Temp.addonsPriceList.add(addonsPriceList.get(position));
                                ctv.setChecked(false);



                            }else{

                                Temp.addonsIdList.remove(addonsiDList.get(position));
                                Temp.addonsNameList.remove(addonsList.get(position));
                                Temp.addonsPriceList.remove(addonsPriceList.get(position));
                                ctv.setChecked(true);



                            } 

适配器getView代码

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

    if (convertView == null) {
        convertView = LayoutInflater.from(getContext()).inflate(
                R.layout.addons_text, parent, false);
        CheckedTextView checkTV=(CheckedTextView)convertView.findViewById(R.id.addonsItem);

        checkTV.setText(Temp.addonsName.get(position));                 
    }
    return convertView;
}

Answer 1

尝尝这个

您需要首先实现else部分，如下所示

ViewHolder holder;

     if (convertView == null) {
    holder = new ViewHolder();
            convertView = LayoutInflater.from(getContext()).inflate(
                    R.layout.addons_text, parent, false);
            holder.checkTV=(CheckedTextView)convertView.findViewById(R.id.addonsItem);


    convertView.setTag(holder);               
        }else{
    holder = (ViewHolder) convertView.getTag();
    }
     holder.checkTV.setText(Temp.addonsName.get(position)); 

然后创建类

class ViewHolder {
            CheckedTextView checkTV;
}

编辑1:

对于您的滚动问题，您需要遵循以下步骤。

Step 1.在ArrayList中添加选定的行值

getView中的Step 2.添加一个条件

if(yourArrayList.contains(selected_value)){
holder.checkTV.setChecked(true);
}else{
holder.checkTV.setChecked(false);
}