微调自定义阵列适配器不允许选择项目 [英] Spinner with custom array adapter doesn't allow selecting item

问题描述

我用一个自定义的数组适配器好手。然而，在下拉列表中选择一个项目时，下拉列表撑在那里，微调没有更新，这是不当行为（相比，使用用绳子通用阵列适配器）。这是自定义类。我缺少什么？谢谢。

 公共类CalendarNameAdapter扩展ArrayAdapter＆LT; AgendaLogic.ExternalCalendarInfo＆GT; {
    上下文mContext;
    ArrayList的＆LT; AgendaLogic.ExternalCalendarInfo＆GT; mCalendarLayers;
    公共CalendarNameAdapter（上下文的背景下，INT资源的ArrayList＆LT; AgendaLogic.ExternalCalendarInfo＆GT;对象）{
        超级（上下文，资源，对象）;
        mContext =背景;
        mCalendarLayers =物体;
    }    @覆盖
    公共无效添加（AgendaLogic.ExternalCalendarInfo对象）{
        mCalendarLayers.add（对象）;
    }    @覆盖
    公众诠释的getCount（）{
        返回mCalendarLayers.size（）;
    }    私有类ViewHolder {
        Button按钮;
        TextView中的TextView;
        公共ViewHolder（按钮_btn，TextView的_tv）{
            按钮= _btn;
            的TextView = _tv;
        }
    }    公共查看getView（INT位置，查看convertView，最终的ViewGroup父）{
        查看查看= convertView;
        如果（查看== NULL）{
            鉴于= View.inflate（mContext，R.layout.li_calendar_display，NULL）;
            Button按钮=（按钮）view.findViewById（R.id.calColor）;
            TextView的名字=（TextView中）view.findViewById（R.id.calName）;
            view.setTag（新ViewHolder（按钮，名））;        }
        ViewHolder viewHolder =（ViewHolder）view.getTag（）;
        viewHolder.button.setBackgroundColor（mCalendarLayers.get（位置）。颜色）;
        viewHolder.textView.setText（mCalendarLayers.get（位置）。名称）;        返回视图。
    }    @覆盖
    公共查看getDropDownView（最终诠释的立场，观点convertView，最终的ViewGroup父）{
        最后查看视图= getView（位置，convertView，父母）;        返回视图。
    }}
 

这是用法，首先初始化与模拟数据的微调。

 公共无效initSpinner（）{
        CalendarNameAdapter exteralCalAdapter = createAdapterWithString（这一点，临时历）;
        mExternalSpinner.setAdapter（exteralCalAdapter）;    }    公共CalendarNameAdapter createAdapterWithString（上下文的背景下，字符串显示）{
        ArrayList的＆LT; AgendaLogic.ExternalCalendarInfo＆GT;名单=新的ArrayList＆LT; AgendaLogic.ExternalCalendarInfo＆GT;（）;
        list.add（新AgendaLogic.ExternalCalendarInfo（-1，显示，0xaabbcc））;
        CalendarNameAdapter DataAdapter的=新CalendarNameAdapter（背景下，
                0，清单）; //不在乎资源文件，因为我们总是使用自定义文件，因此0
        返回DataAdapter的;
    }
 

当我已经载入我需要的数据，我将它添加到适配器：

 私人无效setCalendarInfoToSpinner（ArrayList的＆LT; AgendaLogic.ExternalCalendarInfo＆GT; calList，微调微调）{
    CalendarNameAdapter适配器=（CalendarNameAdapter）spinner.getAdapter（）;
    adapter.clear（）;
    对于（AgendaLogic.ExternalCalendarInfo信息：calList）
        adapter.add（信息）;
    adapter.notifyDataSetChanged（）;}
 

解决方案

我最终回答我的问题供以后谁需要它。解决的办法是：检查列表项的布局文件。如果有一个按钮，无线电，复选框.etc。它可聚焦性设置为false，这样当你在项目挖掘，列表拿到水龙头，而不是子视图。

 机器人：可聚焦=假
 

幸得另一种回答类似的问题，但似乎我现在不能找到它。

I use a custom array adapter for a spinner. However, when selecting an item in the dropdown list, the dropdown list stays there, and the spinner doesn't get updated, which is misbehaviour (compared to using a generic array adapter with string). This is the custom class. Am I missing anything? thanks.

public class CalendarNameAdapter extends ArrayAdapter<AgendaLogic.ExternalCalendarInfo> {
    Context mContext ;
    ArrayList<AgendaLogic.ExternalCalendarInfo> mCalendarLayers;


    public CalendarNameAdapter(Context context, int resource, ArrayList<AgendaLogic.ExternalCalendarInfo> objects) {
        super(context, resource, objects);
        mContext = context;
        mCalendarLayers = objects;
    }



    @Override
    public void add(AgendaLogic.ExternalCalendarInfo object) {
        mCalendarLayers.add(object);
    }

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

    private class ViewHolder{
        Button button;
        TextView textView;
        public ViewHolder(Button _btn, TextView _tv){
            button = _btn;
            textView = _tv;
        }
    }

    public View getView(int position, View convertView, final ViewGroup parent) {
        View view =convertView;
        if (view==null){
            view =  View.inflate(mContext,R.layout.li_calendar_display, null);
            Button button = (Button) view.findViewById(R.id.calColor);
            TextView name = (TextView) view.findViewById(R.id.calName);
            view.setTag(new ViewHolder(button, name));

        }
        ViewHolder viewHolder = (ViewHolder) view.getTag();
        viewHolder.button.setBackgroundColor(mCalendarLayers.get(position).color);
        viewHolder.textView.setText(mCalendarLayers.get(position).name);

        return  view;
    }

    @Override
    public View getDropDownView(final int position, View convertView, final ViewGroup parent) {
        final View view = getView(position, convertView, parent);

        return  view;
    }



}

This is the usage, first init the spinner with mock data.

    public void initSpinner(){
        CalendarNameAdapter exteralCalAdapter = createAdapterWithString(this, "temp calendar");
        mExternalSpinner.setAdapter(exteralCalAdapter);

    }

    public   CalendarNameAdapter createAdapterWithString(Context context, String display) {
        ArrayList<AgendaLogic.ExternalCalendarInfo> list = new ArrayList<AgendaLogic.ExternalCalendarInfo>();
        list.add(new AgendaLogic.ExternalCalendarInfo(-1, display, 0xaabbcc));
        CalendarNameAdapter dataAdapter = new CalendarNameAdapter(context,
                0, list); //don't care about resource file, since we always use custom file, hence 0
        return dataAdapter;
    }

When I already load the data I need, I add it to the adapter:

private void setCalendarInfoToSpinner(ArrayList<AgendaLogic.ExternalCalendarInfo> calList, Spinner spinner) {
    CalendarNameAdapter adapter = (CalendarNameAdapter) spinner.getAdapter();
    adapter.clear();
    for (AgendaLogic.ExternalCalendarInfo info: calList)
        adapter.add(info);
    adapter.notifyDataSetChanged();

}

解决方案

I ended up answering my own question for who needs it later. The solution is: check in the layout file of the list item. If there is a button, a radio, a checkbox, .etc. Set its focusability to false so that when you tap on the item, the list get the tap, not that child view.

android:focusable="false"

Credit goes to another answer for similar question, but I can't seem to find it now.

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