java - 隐藏数组适配器中的元素，而不是删除它们

Question

我试图从 google places api 隐藏我的 AutoCompleteTextView 数组适配器中的一些元素。更具体地说，我想隐藏元素 position%2==0。我在堆栈溢出中找到了一些答案，建议在 getView 中这样做:

@Override
public View getView(int position, View view, ViewGroup parent) {
    if(position%2==0) {
        //something to do here
    }
    return view;
}

但是我不知道在评论区要做什么。

完整代码如下:

class GooglePlacesAutocompleteAdapter extends ArrayAdapter implements Filterable {
    private ArrayList resultList;

    public GooglePlacesAutocompleteAdapter(Context context, int textViewResourceId) {
        super(context, textViewResourceId);
    }

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

    @Override
    public Object getItem(int index) {
        return resultList.get(index);
    }

    @Override
    public View getView(int position, View view, ViewGroup parent) {
        if(position%2==0) {
            //view.setVisibility() maybe?
        }
        return view;
    }

    @Override
    public Filter getFilter() {
        Filter filter = new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                FilterResults filterResults = new FilterResults();
                if (constraint != null) {
                    // Retrieve the autocomplete results.
                    resultList = autocomplete(constraint.toString());
                    // Assign the data to the FilterResults
                    filterResults.values = resultList;
                    filterResults.count = resultList.size();
                }
                return filterResults;
            }

            @Override
            protected void publishResults(CharSequence constraint, Filter.FilterResults results) {
                if (results != null && results.count > 0) {
                    notifyDataSetChanged();
                } else {
                    notifyDataSetInvalidated();
                }
            }
        };
        return filter;
    }
}

Answer 1

在 getCount() 和 getItem() 中执行:

@Override
public int getCount() {
    return resultList.size() / 2;
}

@Override
public Object getItem(int index) {
    return resultList.get(index * 2 + 1);
}

只需确保在 getView() 中使用 getItem()。