Question

我有一个Json arraylist。这里已经使用此自动填充文本视图设置了适配器文件。

从我的代码：

我使用了像USER这样的包装器类。在这个课程中，有3个字段(userid, username and designation)。

这里我需要写一些文字意味着需要显示来自用户名和名称的建议。如果输入的单词与这两个字段中的任何一个匹配，建议需要显示。

我如何处理AutoCompleteTextView。

ArrayAdapter<User> userAdapter = new ArrayAdapter<>(getActivity(), R.layout
                                .spinner_item_text,
                                UserList);

现在数组中显示的建议。但我需要像字符串一样显示建议。

对于EG：

UserList具有类似

的值

{
  "profile_view": [
    {
username :"test",designation:"SE"
    },
{
username :"test1",designation:"TE"
    }]}

现在正在框中输入关键字，例如＆＃34; t＆＃34;意味着需要提出像

这样的建议

 test
 test1
 TE

我该怎么办？请给我任何实现这个想法？

Answer 1

编写自定义适配器并在该适配器中使用自定义筛选。在下面的代码中，SearchSuggestion是我的模型。您可以在performFiltering()方法中更改模型并修改搜索条件。希望这有帮助！

public class SearchSuggestionAdapter extends ArrayAdapter<SearchSuggestion> implements Filterable {

    private Context mContext;
    private List<SearchSuggestion> mSuggestionList;
    private List<SearchSuggestion> mFilteredSuggestionList;

    public SearchSuggestionAdapter(Context context, List<SearchSuggestion> suggestionList) {
        super(context, -1);
        mContext = context;
        mSuggestionList = suggestionList;
        mFilteredSuggestionList = mSuggestionList;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if (convertView == null) {
        LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = inflater.inflate(R.layout.suggestion_item, null);
        viewHolder = new ViewHolder();
        viewHolder.mSuggestionTextView = (TextView) convertView.findViewById(R.id.suggestion_text);
        viewHolder.mSuggestionImage = (ImageView) convertView.findViewById(R.id.suggestion_image);
        convertView.setTag(viewHolder);
        } else {
        viewHolder = (ViewHolder) convertView.getTag();
        }
        SearchSuggestion searchSuggestion = mFilteredSuggestionList.get(position);
        viewHolder.mSuggestionTextView.setText(searchSuggestion.getName());
        viewHolder.mSuggestionImage.setImageResource(searchSuggestion.isTag() ? R.drawable.suggestion_tag_icon : R.drawable.suggestion_project_icon);
        return convertView;
    }

    public static class ViewHolder {
        private ImageView mSuggestionImage;
        private TextView mSuggestionTextView;
    }

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

    @Override
    public SearchSuggestion getItem(int position) {
        return mFilteredSuggestionList.get(position);
    }

    @Override
    public Filter getFilter() {
        return new Filter() {
        @Override
        protected FilterResults performFiltering(CharSequence constraint)     {
        final FilterResults results = new FilterResults();
        if (constraint != null && constraint.length() > 0) {
            constraint = constraint.toString().toLowerCase();
            List<SearchSuggestion> tempFilteredList = new ArrayList<>();
            for (SearchSuggestion suggestion : mSuggestionList) {
                String name = suggestion.getName();
                if (name != null && name.toLowerCase().contains(constraint)) {
                    tempFilteredList.add(suggestion);
                }
            }
            results.values = tempFilteredList;
            results.count = tempFilteredList.size();
        } else {
            results.values = mSuggestionList;
            results.count = mSuggestionList.size();
        }
        return results;
    }

    @SuppressWarnings("unchecked")
    @Override
    protected void publishResults(CharSequence constraint, FilterResults results) {
        if (results.values != null) {
            mFilteredSuggestionList = (ArrayList<SearchSuggestion>) results.values;
            notifyDataSetChanged();
        }
    }
};
}
}

Answer 2

如果您希望在下拉列表中将您的用户名和名称作为建议，请将所有用户名和名称添加到一个阵列中，然后将其传递给适配器。

Android AutocompleteTextview建议显示在2个字段中

2 个答案: