ListView Viewholder 复选框状态 [英] ListView Viewholder checkbox state

问题描述

我的 ListView 自定义适配器(及其新实现的 viewHolder)有一些问题.我有一个 ListView，每个项目都有一个复选框(这里没有什么新东西).问题是，如果我的列表中有 9 个以上的项目，当我选中第一个复选框时，将自动选中第十个(第二个和第十一个相同)，就像两个项目都有一个侦听器一样(和我相信在某种程度上是这样).

I've some problems with my ListView custom adapter (and its newly implemented viewHolder). I have a ListView with a checkbox for each item (nothing new here). The problem is, if there is more than 9 items in my list, when I check the first checkbox, the tenth will be automatically checked (same for the second with the eleventh) just like if there were one listener for both item (and I beleive it's the case in some way).

我在此处阅读了有关 listView、视图回收和 ViewHolder 解决方法的位置问题:如何让我的 ArrayAdapter 遵循 ViewHolder 模式?

I read about the position issue with listView, view recycling and the ViewHolder way to solve it here: How can I make my ArrayAdapter follow the ViewHolder pattern?

但我可能做错了什么，因为它不起作用......

But I probably made something wrong because it's not working...

public class PresenceListAdapter extends SimpleAdapter {
private LayoutInflater  inflater;
private List<Integer> ids;
private List<String> statuts;

public PresenceListAdapter (Context context, List<? extends Map<String, ?>> data, int resource, String[] from, int[] to, List<Integer> ids, List<String> statuts)
{
    super (context, data, resource, from, to);
    inflater = LayoutInflater.from (context);
    this.ids = ids;
    this.statuts= statuts;

}

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

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

    ViewHolder holder;

    if (convertView == null)
    {
        convertView = inflater.inflate (R.layout.list_text_checkbox, null);

        holder = new ViewHolder();

        holder.btn = (Button) convertView.findViewById(R.id.btnRetard);
        holder.check = (CheckBox) convertView.findViewById(R.id.checkPresent);

        if (statuts.get(position).equals("P")) {
            Drawable img = inflater.getContext().getResources().getDrawable(android.R.drawable.presence_online);
            holder.btn.setCompoundDrawablesWithIntrinsicBounds( img, null, null, null );
            holder.btn.setEnabled(true);
            holder.check.setChecked(true);
        }
        else if(statuts.get(position).equals("R"))
        {
            Drawable img = inflater.getContext().getResources().getDrawable(android.R.drawable.presence_away);
            holder.btn.setCompoundDrawablesWithIntrinsicBounds( img, null, null, null );
            holder.btn.setEnabled(true);
            holder.check.setChecked(true);
        }
        else 
        {
            Drawable img = inflater.getContext().getResources().getDrawable(android.R.drawable.presence_invisible);
            holder.btn.setCompoundDrawablesWithIntrinsicBounds( img, null, null, null );
            holder.check.setChecked(false);
        }

        convertView.setTag(holder);
    }
    else 
    {
        holder = (ViewHolder) convertView.getTag();
    }

    int id = ids.get(position);

    if(id != 0)
    {
        holder.check.setTag(id);
        holder.btn.setTag(id);
    }

    return super.getView (position, convertView, parent);
}

static class ViewHolder {
    Button btn;
    CheckBox check;
}

还有我的听众:public void changerPresent(View v) {

And my listener: public void changerPresent(View v) {

    CheckBox checkPresent = (CheckBox) v;
    int idPersonne = (Integer) checkPresent.getTag();
    View parent = (View)v.getParent();
    Button btn = (Button) parent.findViewById(R.id.btnRetard);

    if(checkPresent.isChecked()) {
        gestion.updatePresence(idPersonne, idSeance, "P");

        btn.setEnabled(true);
        setBtnRetardPresent(btn);           
    }
    else 
    {
        gestion.updatePresence(idPersonne, idSeance, "A");
        btn.setEnabled(false);
        setBtnRetardAbsent(btn);

    }

}

我现在很感激任何帮助，我现在已经为此工作了几个小时.

I would appreciate any help at this point, I'm working on this for hours now.

非常感谢.

推荐答案

这是我的工作方式:

首先，您需要一个单独的数组用于检查状态.它必须与您的适配器的 getCount() 的大小相同.

First, you need a separate array for your checked state. It has to be the same size as your adapter's getCount().

然后在您的 getView 上，您的复选框的 setOnCheckedChangedListener 必须先于您的 checkbox.setChecked 语句.

Then on your getView, your checkbox's setOnCheckedChangedListener MUST PRECEED your checkbox.setChecked statements.

示例:

holder.checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
  @Override
  public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    isChecked[position] = isChecked;
  }
});

holder.checkBox.setChecked(isChecked[position]);

这篇关于ListView Viewholder 复选框状态的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！