一段时间后取消网址连接

Question

I have an app that contacts Yahoo weather API to get the local wind speed. It's not critical to get wind speed but is desirable and does improve my app's accuracy. I have a method that first checks for an active internet connection before calling for refreshWeather. It all works groovy. However, I want to add code to cancel the request if it gets no data after.. say... 15 seconds. Here's the method. Any suggestions appreciated.

public void refreshWeather (final double lat, final double lon){

    new AsyncTask<String, Void, String>() {
        @Override
        protected String doInBackground(String... strings) {

            String YQL = String.format("select * from weather.forecast where woeid in (SELECT woeid FROM geo.places WHERE text=\"(%s,%s)\")", lat, lon);
            String endpoint = String.format("https://query.yahooapis.com/v1/public/yql?q=%s&format=json", Uri.encode(YQL));

            try {
                URL url = new URL(endpoint);
                URLConnection connection = url.openConnection();
                InputStream inputStream = connection.getInputStream();
                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
                StringBuilder result = new StringBuilder();
                String line;
                while ((line = reader.readLine()) !=null){
                    result.append(line);
                }
                return result.toString();
            } catch (Exception e) {
                error = e;
            }
            return null;
        }

        @Override
        protected void onPostExecute(String s) {

            if (s == null && error != null){
                callback.serviceFailure(error);
                return;
            }
            try {
                JSONObject data = new JSONObject(s);
                JSONObject queryResults =data.optJSONObject("query");
                int count =queryResults.optInt("count");
                if (count ==0){
                    callback.serviceFailure(new LocationWeatherException("No wind information found for your location"));
                    return;
                }

                Channel channel = new Channel();
                channel.populate(queryResults.optJSONObject("results").optJSONObject("channel"));
                callback.serviceSuccess(channel);
            } catch (JSONException e) {
                callback.serviceFailure(e);
            }
        }
    }.execute();

}

Answer 1

I figured it out myself. I'm adding the solution in case someone else is searching for the same thing.

    URLConnection connection = url.openConnection();
    connection.setConnectTimeout(15000); //15 seconds
    connection.setReadTimeout(15000); //15 seconds