公共类ArrayAdapter时遇到麻烦延伸ArrayAdapter {自定义多种可选的ListView在Android中,滚动
private final List<String> list;
private final Activity context;
public ArrayAdapter_DiscountList(Activity context, List<Class_Model> list) {
super(context, R.layout.list, list);
this.context = context;
this.list = list;
}
static class ViewHolder {
protected TextView text;
protected ToggleButton toggle;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = null;
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
view = inflator.inflate(R.layout.list, null);
final ViewHolder viewHolder = new ViewHolder();
viewHolder.text = (TextView) view.findViewById(R.id.list_item_name);
viewHolder.toggle = (ToggleButton) view.findViewById(R.id.checkbox_toggle);
viewHolder.toggle.setVisibility(View.VISIBLE);
// TODO Auto-generated method stub
viewHolder.toggle.setOnCheckedChangeListener(
new CompoundButton.OnCheckedChangeListener()
{
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
String element = (String) viewHolder.toggle.getTag();
element.setSelected(buttonView.isChecked());
if(isChecked)
{
ArrFDItem.add(list.get(position).getName());
}else
{
ArrFDItem.remove(list.get(position).getName());
}
}
});
view.setTag(viewHolder);
viewHolder.toggle.setTag(list.get(position));
} else {
view = convertView;
((ViewHolder) view.getTag()).toggle.setTag(list.get(position));
}
ViewHolder holder = (ViewHolder) view.getTag();
holder.text.setText(list.get(position).getName());
holder.toggle.setChecked(list.get(position).isSelected());
return view;
}
}
工作正常,但scrollng列表视图时,它的去除列表中的项目,以及与postion of list.get(position).getName();仅获得0-5(一次只有6个列表项目在列表视图中可见)。我必须在列表中选择更多项目,并且必须根据列表中的切换选择来添加/删除。请帮忙。感谢你...
嗨,第一次感谢您的回复。不知何故,我知道在滚动列表时回收convertview。但无法得到确切的解决方案。请看看问题,我已经退出了。 – Pankaj
嗨aaamos, 感谢您解释清楚的答案,但我很抱歉,它不适合我。无论如何感谢您的关心,我会通读您提供的文章。关于ClassModel,它被错误地改为String。这与你解释的一样。 再次感谢你.... – Pankaj