Android Open Source - SmartNavi Places Auto Complete

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License

The source code is released under:

Apache License

Java Source Code

package com.ilm.sandwich.helferklassen;
//from   w  w  w .j a  v  a  2 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 org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import com.ilm.sandwich.Config;
import com.ilm.sandwich.GoogleMapActivity;

import android.database.MatrixCursor;
import android.os.AsyncTask;

public class PlacesAutoComplete extends AsyncTask<String, String, StringBuilder> {

  //private static final String  LOG_TAG        = "PlacesAutocomplete";
  private static final String  TYPE_AUTOCOMPLETE  = "/autocomplete";
  private static final String  OUT_JSON      = "/json";

  @Override
  protected StringBuilder doInBackground(String... input) {

    HttpURLConnection conn = null;
    StringBuilder jsonResults = new StringBuilder();
    
    
    String randomAPI;
    if (Math.random() > 0.5) {
      //Log.d("Zufall_Places", "API MA");
      randomAPI = Config.PLACES_API_KEY_MA;
    } else {
      //Log.d("Zufall_Places", "API CH");
      randomAPI = Config.PLACES_API_KEY_CH;
    }
    
    
    try {

      StringBuilder sb = new StringBuilder(Config.PLACES_API_URL + TYPE_AUTOCOMPLETE + OUT_JSON);
      sb.append("?sensor=true&key=" + randomAPI);
    //  sb.append("&components=country:" + Locale.getDefault().getLanguage());
      sb.append("&location=" + Rechnung.startLat + "," + Rechnung.startLon);
      sb.append("&radius=1000");
      sb.append("&input=" + URLEncoder.encode(input[0], "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);
      }
      
      
      
      /*
      // Fallback
      JSONObject jsonObj = new JSONObject(jsonResults.toString());
      String status = (String) jsonObj.get("status");
       
      if (status.equals("OVER_QUERY_LIMIT")) {
        // API key change
        Config.PLACES_API_KEY = Config.PLACES_API_KEY_CH;
        Config.PLACES_API_FALLBACK++;
      }
      */
      
    } catch (MalformedURLException e) {
      //Log.e(LOG_TAG, "Error processing Places API URL", e);
    } catch (IOException e) {
      //Log.e(LOG_TAG, "Error connecting to Places API", e);
    } finally {
      if (conn != null) {
        conn.disconnect();
      }
    }

    return jsonResults;
  }

  @Override
  protected void onPostExecute(StringBuilder jsonResults) {
    try {
      // Create a JSON object hierarchy from the results
      JSONObject jsonObj = new JSONObject(jsonResults.toString());
      JSONArray predsJsonArray = jsonObj.getJSONArray("predictions");

      // builds MatrixCursor for autocomplete search view
      MatrixCursor cursor = new MatrixCursor(Config.COLUMNS);
      for (int i = 0; i < predsJsonArray.length(); i++) {
        int pos = i + 1;
        cursor.addRow(new String[] { "" + pos, predsJsonArray.getJSONObject(i).getString("description") });
      }
      
      GoogleMapActivity.cursor = cursor;
      GoogleMapActivity.changeSuggestionAdapter.sendEmptyMessage(0);
      /*
      Karte.mSuggestionsAdapter = new SuggestionsAdapter(Karte.sbContext, cursor);
      Karte.searchView.setSuggestionsAdapter(Karte.mSuggestionsAdapter);
      Karte.searchView.refreshDrawableState();
      Karte.suggestionsInProgress = false;
      */
      //Log.d("updateAutocompleteAdapter", "Cursor was set");

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

Java Source Code List

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