Question

我已经使用自定义适配器实现了AutoCompleteTextView。

在getFilter（）方法中，我从服务器获取建议并显示它。现在，如果我慢慢地逐个输入一个字符，它的效果非常好，但是当我开始快速输入时，它会显示出建议。

有关如何处理此问题的任何建议吗？

@Override
public Filter getFilter() {
    Log.i("TIME", "Called getfilter");
    Filter filter = new Filter() {
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            Log.i("TIME", "1");
            Log.i("TIME", "2 : " + constraint);
            FilterResults filterResults = new FilterResults();
            if (constraint != null) {
                // Retrieve the autocomplete results.
                long t1 = System.currentTimeMillis();
                autoCompletItems = autocomplete(constraint.toString());
                long t2 = System.currentTimeMillis();
                Log.i("TIME", "Required Milis : " + (t2 - t1));
                Log.i("TIME", "Total Items : " + autoCompletItems.size());
                // Assign the data to the FilterResults
                filterResults.values = autoCompletItems;
                filterResults.count = autoCompletItems.size();
            }
            Log.i("TIME", "3: " + filterResults.count);
            return filterResults;
        }

        @Override
        protected void publishResults(CharSequence constraint,
                FilterResults results) {
            Log.i("TIME", "Called publishResults" + "   , Count : "
                    + results.count);
            clear();
            if (results != null && results.count > 0) {

                notifyDataSetChanged();
            } else {
                notifyDataSetInvalidated();
            }
        }

        @Override
        public CharSequence convertResultToString(Object resultValue) {
            AutoCompletItem autoCompletItem = (AutoCompletItem) resultValue;
            return autoCompletItem.getProductName();
        }

    };

    return filter;
}

protected ArrayList<AutoCompletItem> autocomplete(String string) {
    ArrayList<AutoCompletItem> resultList = null;

    HttpURLConnection conn = null;
    StringBuilder jsonResults = new StringBuilder();
    try {
        Log.i(LOG_TAG, "2.1");
        StringBuilder sb = new StringBuilder(URL_GET_SUGGESTIONS_SERVICE);
        URL url = new URL(sb.toString());

        conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("POST");
        conn.setDoInput(true);
        conn.setDoOutput(true);
        InputStream inputStream = conn.getInputStream();
        Log.i(LOG_TAG, "2.2");
        int available = inputStream.available();
        Log.i(LOG_TAG, "2.3" + " Total available : " + available);
        byte[] data = new byte[available];
        inputStream.read(data);
        Log.i(LOG_TAG, "2.4");
        ItemContainer container = (ItemContainer) deserialize(data);
        Log.i(LOG_TAG, "2.5");
        resultList = (ArrayList<AutoCompletItem>) container
                .getSerializable();
        Log.i(LOG_TAG, "2.6");
        System.out.println("Check Data");
    } catch (MalformedURLException e) {
        Log.i(LOG_TAG, "2.exception " + e);
        Log.e(LOG_TAG, "Error processing Places API URL", e);
        return resultList;
    } catch (IOException e) {
        Log.i(LOG_TAG, "2.exception " + e);
        Log.e(LOG_TAG, "Error connecting to Places API", e);
        return resultList;
    } finally {
        Log.i(LOG_TAG, "2.finally ");
        if (conn != null) {
            conn.disconnect();
        }
    }

    return resultList;
}

Answer 1

对于那些可能正在寻找答案的人来说，答案真的很晚。

AutoCompleteTextView myAutoCompleteTV;

如果您正在动态填充AutoCompleteTextView（可能使用AsyncTask：以后能够在UI线程上返回），您可以添加如下的TextWatcher

myAutoCompleteTV.addTextChangedListener(this);

这样你就可以在用户输入他知道自己正在寻找的角色时单独填充它。当他遇到困难或需要建议时，他会停下来，当myAutoCompleteTV不再查询时（请记住我假设你有一个巨大的名单）

在三位观察者之一中，强制过滤器显示符合当前myAutoCompleteTV

内容的建议

@Override
public void onTextChanged(CharSequence s, int start, int before, int count)
{
     ArrayAdapter<String> myAdapter = (ArrayAdapter<String>) myAutoCompleteTV.getAdapter
     myAdapter.getFilter().filter(myAutoCompleteTV.getText().toString());
     myAdapter.notifyDataSetChanged();
}

AutoCompleteTextView不显示建议

1 个答案: