Android Open Source - bodyguard Place Auto Complete

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Back to project page bodyguard.

License

The source code is released under:

GNU General Public License

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Java Source Code

package com.example.bodyguard;
/*from ww w.  j ava2 s.co m*/
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

public class PlaceAutoComplete {

  
  private static final String LOG_TAG = "ExampleApp";

  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     = "AIzaSyAI6xxyy2Nanjr8uO7XDUaaKM-grEZWhys";

  public 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("?sensor=false&key=" + API_KEY);
    sb.append("&components=country:in");
          sb.append("&input=" + URLEncoder.encode(input, "utf8"));

          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();
          }
      }

      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"));
          }
      } catch (JSONException e) {
          Log.e(LOG_TAG, "Cannot process JSON results", e);
      }

      return resultList;
  }
}

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