android - 带有自定义 ArrayAdapter 和 Filter 的 AutoCompleteTextView

Question

当我尝试从 LogCat 过滤 AutoCompleteTextView 中的结果时遇到问题我知道过滤执行正确但它没有刷新 View :/我是否忘记了任何建议或帮助？

这是过滤器的源代码。

@Override
public Filter getFilter() {
    Filter myFilter = new Filter() {

        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            Log.i(TAG, "Perform filtering with constraint: " + constraint.toString());
            List<String> resultsSuggestions = new ArrayList<String>();
            Log.i(TAG, "COUNT: " + getCount());
            for (int i = 0; i < getCount(); i++) {
                if(getItem(i).getSuggestionValue().startsWith(constraint.toString())){
                    Log.i(TAG, "ADDED");
                    resultsSuggestions.add(getItem(i).getSuggestionValue());
                }
            }
            FilterResults results = new FilterResults();
            results.values = resultsSuggestions;
            results.count = resultsSuggestions.size();
            return results;
        }

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

Answer 1

缺少的部分是我需要设置过滤器的新值所以我只是简单地改变了

publushResults();

现在它正在工作。正确的代码如下。

    @Override
    @SuppressWarnings("unchecked")
    protected void publishResults(CharSequence constraint, FilterResults results) {
        clear();
        ArrayList<Suggestions> newValues = (ArrayList<Suggestions>) results.values;
        for (int i = 0; i < newValues.size(); i++) {
            add(newValues.get(i));
        }
        if(results.count>0){
            notifyDataSetChanged();
        } else{
            notifyDataSetInvalidated();
        }
    }