android-“未选择项目”,同时单击了AutoCompleteTextview项目

概述自动完成文本正确列出所有内容都可以正常工作..但是问题是,一旦我单击自动完成项,它就没有选择.当我单击项目时,Logcat显示“未选择项目”.Autocomplte.setOnItemClickListener(newOnItemClickListener(){@OverridepublicvoidonItemClick(AdapterView<?>

自动完成文本正确列出所有内容都可以正常工作..但是问题是,一旦我单击自动完成项,它就没有选择.

当我单击项目时,Logcat显示“未选择项目”.

autocomplte.setonItemClickListener(new OnItemClickListener() {        @OverrIDe        public voID onItemClick(AdapterVIEw<?> arg0, VIEw arg1,                int position, long arg3) {            // Log.d("your selected item",""+s1.get(position));            System.out.println("sajdksadkasjdksajdksa");            // s1.get(position) is name selected from autocompletetextvIEw            // Now you can show the value on textvIEw.        }    });

// ————– Adapter类

public class LoadLocationBasedonCountry extends BaseAdapter implements    Filterable {private ArrayList<CountryLocation> locList;private ArrayList<CountryLocation> storedLocList;private Activity mActivity;private LayoutInflater inflater;public LoadLocationBasedonCountry(Activity activity,        ArrayList<CountryLocation> joes) {    this.mActivity = activity;    this.locList = joes;    storedLocList = new ArrayList<CountryLocation>(joes);}@OverrIDepublic VIEw getVIEw(final int position, VIEw convertVIEw, VIEwGroup parent) {    final VIEwHolder holder;    VIEw vi = convertVIEw;    if (vi == null) {        holder = new VIEwHolder();        inflater = (LayoutInflater) mActivity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);        vi = inflater.inflate(R.layout.row_loc_based_on_country, null,false);        holder.txtCtyname = (TextVIEw) vi.findVIEwByID(R.ID.txtCtyname);        vi.setTag(holder);    }    else {        holder = (VIEwHolder) vi.getTag();    }    CountryLocation cLoc = locList.get(position);    holder.txtCtyname.setText(cLoc.getLocname() + ", " + cLoc.getCountry());    return vi;}@OverrIDepublic int getCount() {    return locList.size();}@OverrIDepublic Object getItem(int position) {    return null;}@OverrIDepublic long getItemID(int position) {    return 0;}public static class VIEwHolder {    private TextVIEw txtCtyname;}@OverrIDepublic Filter getFilter() {    Filter filter = new Filter() {        @SuppressWarnings("unchecked")        @OverrIDe        protected voID publishResults(CharSequence constraint,FilterResults results) {            locList = (ArrayList<CountryLocation>) results.values;            notifyDataSetChanged();        }        @OverrIDe        protected FilterResults performFiltering(CharSequence constraint)        {            FilterResults results = new FilterResults();            ArrayList<CountryLocation> FilteredArrList = new ArrayList<CountryLocation>();            if (constraint == null || constraint.length() == 0) {                results.count = storedLocList.size();                results.values = storedLocList;            } else {                constraint = constraint.toString();                for (int i = 0; i < storedLocList.size(); i++) {                    CountryLocation country = storedLocList.get(i);                    if (country.getLocname()                            .tolowerCase(Locale.getDefault())                            .startsWith(constraint.toString())) {                        FilteredArrList.add(country);                    }                }                results.count = FilteredArrList.size();                results.values = FilteredArrList;            }            return results;        }    };    return filter;}public voID updateList(ArrayList<CountryLocation> List) {    locList.clear();    locList = List;    notifyDataSetChanged();}

}

有人遇到过这类问题吗？

解决方法:

终于我找到了解决方案；

由于在autocompleteTextvIEw中,它通过使用方法“ performCompletion”的adapter.getItem(position)获得值—–请参阅androID.Widget.autoCompleteTextvIEw

样品：

 private voID performCompletion(VIEw selectedVIEw, int position, long ID) {    if (isPopupShowing()) {        Object selectedItem;        if (position < 0) {            selectedItem = mPopup.getSelectedItem();        } else {

selectedItem = mAdapter.getItem(position); //如果我们从适配器返回null,则此行将为null

}        if (selectedItem == null) {            Log.w(TAG, "performCompletion: no selected item");            return;        }

 @OverrIDepublic Object getItem(int position) {return null;}

所以正确的方法是

@OverrIDe public Object getItem(int position){    return locList.get(position).getLocname();}

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