Question

公共类PlacesAutoCompleteAdapter extends ArrayAdapter实现了Filterable {

private static final String LOG_TAG = "Roomys";

private static final String PLACES_API_BASE = "https://maps.googleapis.com/maps/api/place";
private static final String TYPE_AUTOCOMPLETE = "/autocomplete";
private static final String OUT_JSON = "/json";

private static final String API_KEY = "Akalkcalckalaxlxxkalxii22leilkala";

private ArrayList<String> resultList;

public PlacesAutoCompleteAdapter(Context context, int textViewResourceId) {
    super(context, textViewResourceId);

}

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

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

@Override
public Filter getFilter() {
    Filter filter = new Filter() {
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            FilterResults filterResults = new FilterResults();
            Log.d("getFilter","constraint is "+constraint);
            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, FilterResults results) {
            if (results != null && results.count > 0) {
                Log.d("publishing results","true");
                notifyDataSetChanged();
            } else {
                notifyDataSetInvalidated();
            }
        }
    };
    return filter;
}

private ArrayList<String> autocomplete(String input) {
    ArrayList<String> resultList = null;

    HttpURLConnection conn = null;
    StringBuilder jsonResults = new StringBuilder();
    try {
        StringBuilder sb = new StringBuilder(PLACES_API_BASE + TYPE_AUTOCOMPLETE + OUT_JSON);
        sb.append("?key=" + API_KEY);
        sb.append("&input=" + URLEncoder.encode(input, "utf8"));
        Log.i("search api uri", sb.toString());
        URL url = new URL(sb.toString());
        conn = (HttpURLConnection) url.openConnection();
        InputStreamReader in = new InputStreamReader(conn.getInputStream());

        // Load the results into a StringBuilder
        int read;
        char[] buff = new char[1024];
        while ((read = in.read(buff)) != -1) {
            jsonResults.append(buff, 0, read);
        }
    } catch (MalformedURLException e) {
        Log.e(LOG_TAG, "Error processing Places API URL", e);
        return resultList;
    } catch (IOException e) {
        Log.e(LOG_TAG, "Error connecting to Places API", e);
        return resultList;
    } finally {
        if (conn != null) {
            conn.disconnect();
        }
    }
    if(jsonResults!=null){
        try {
            // Create a JSON object hierarchy from the results
            JSONObject jsonObj = new JSONObject(jsonResults.toString());
            JSONArray predsJsonArray = jsonObj.getJSONArray("predictions");
            // Extract the Place descriptions from the results
            resultList = new ArrayList<String>(predsJsonArray.length());
            for (int i = 0; i < predsJsonArray.length(); i++) {
 resultList.add(predsJsonArray.getJSONObject(i).getString("description"));
                Log.d("places auto","description is "+predsJsonArray.getJSONObject(i).getString("description"));
                Log.d("places auto","result list size is "+resultList.size());
            }
        } catch (JSONException e) {
            Log.e(LOG_TAG, "Cannot process JSON results", e);
        }
    }
    return resultList;
}
}

使用代码

    actv = (AutoCompleteTextView) dialog.findViewById(R.id.home_address_act);
    PlacesAutoCompleteAdapter adapter = new PlacesAutoCompleteAdapter(getActivity(), R.layout.autocomplete_list_item);
    adapter.setNotifyOnChange(true);
    actv.setAdapter(adapter);
    actv.setOnItemClickListener(this);

获取文字。

    @Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    address = (String) parent.getItemAtPosition(position);
    Log.d("places autocomplete","selected place is "+address);

}

请帮助我，这是一个问题，因为我也想从这个地方计算lat n long并且没有出现我要进入的地方。但我的朋友的PHP网站谷歌地方工作正常。这是android

的问题

这里是正确显示1个预测的json响应。

  {        
       "predictions" : [
  {
     "description" : "UBCI Gremda, C81, Sfax, Tunisia",
     "id" : "f4c3384175d71788cbfd6ff7ee1809b893d55dbf",
     "matched_substrings" : [
        {
           "length" : 7,
           "offset" : 0
        }
     ],
     "place_id" : "ChIJy5CYbYTTARMRLlJ_ciDn0FA",
     "reference" : "CjQtAAAAdA8G1_eaEc6ojJye079YMzIGLTW8h14KpcERlGzD8RYR4LWM9asStZFqNm2kRq7QEhCB9ge0-NYjo15-2304DKG0GhQv-Al8uWn7V7o7HhrMA9BvVWMGcA",
     "terms" : [
        {
           "offset" : 0,
           "value" : "UBCI Gremda"
        },
        {
           "offset" : 13,
           "value" : "C81"
        },
        {
           "offset" : 18,
           "value" : "Sfax"
        },
        {
           "offset" : 24,
           "value" : "Tunisia"
        }
     ],
     "types" : [ "establishment" ]
  }    
   ],    
   "status" : "OK"
}

有一个预测，并且在阵列适配器中正确得到这个但是当我输入“UBCI gr”时，自动完成并不会显示这个单个结果下拉。

Answer 1

看起来“UBCI Gremda，C81，Sfax，突尼斯”是法语结果。您可以通过在网址中添加“＆amp; language = fr”来使其正确显示。否则，Places API Web服务可能默认使用英语，但不包括该结果。

我还建议调查适用于Android的新Places API，这应该更简单一些。有关文档，请参阅https://developers.google.com/places/android/。

我希望这有帮助！

当只有1个预测来自Google地方时，自动填充文字视图不显示下拉列表

1 个答案: