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package dk.thoerup.traininfo; |
package dk.thoerup.traininfo; |
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import java.io.BufferedReader; |
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import java.io.InputStreamReader; |
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import java.net.URL; |
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import java.net.URLConnection; |
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import java.util.ArrayList; |
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import java.util.List; |
import java.util.List; |
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import org.json.JSONArray; |
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import org.json.JSONObject; |
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import dk.thoerup.traininfo.util.DownloadUtil; |
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import android.content.Context; |
import android.content.Context; |
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import android.location.Criteria; |
import android.location.GpsSatellite; |
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import android.location.GpsStatus; |
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import android.location.Location; |
import android.location.Location; |
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import android.location.LocationListener; |
import android.location.LocationListener; |
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import android.location.LocationManager; |
import android.location.LocationManager; |
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import android.os.Bundle; |
import android.os.Bundle; |
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import android.os.Handler; |
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import android.util.Log; |
import android.util.Log; |
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public class StationLocator implements LocationListener{ |
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LocationManager locManager; |
public class LocationLookup implements LocationListener, GpsStatus.Listener { |
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Context cntx; |
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Handler hndl; |
public enum LookupStates { |
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GOTLOCATION, |
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NOPROVIDER, |
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STARTED, |
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IDLE |
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} |
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ArrayList<StationBean> stationList = new ArrayList<StationBean>(); |
private LocationManager locManager; |
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List<StationBean> safeStationList = java.util.Collections.unmodifiableList(stationList); |
private Context cntx; |
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private Location lastKnownLocation = null; |
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private Location savedLocation = null; |
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private int satCount; |
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private boolean hasGps; |
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private LookupStates state; |
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private long startTime; |
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public StationLocator(Context c, Handler h) { |
public LocationLookup(Context c) { |
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state = LookupStates.IDLE; |
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cntx = c; |
cntx = c; |
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hndl = h; |
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} |
} |
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public List<StationBean> getStations() { |
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return safeStationList; |
public boolean hasLocation() { |
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return savedLocation != null; |
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} |
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public Location getLocation() |
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{ |
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return savedLocation; |
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} |
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public boolean hasGps() { |
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return hasGps; |
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} |
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public int getSatCount() { |
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return satCount; |
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} |
} |
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public void abortLocationListener() { |
public LookupStates getState() { |
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locManager.removeUpdates(this); |
return state; |
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} |
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public Location getLastKnownLocation() { |
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return lastKnownLocation; |
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} |
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public long elapsedTime() { |
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long now = android.os.SystemClock.elapsedRealtime(); |
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return now - startTime; |
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} |
} |
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public void locateStations() { |
public void locateStations() { |
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//http://www.google.com/uds/GlocalSearch?callback=google.search.LocalSearch.RawCompletion&context=1&lstkp=0&rsz=small&hl=en&source=gsc&gss=.com&sig=fadf0e8d483d0f70bea11d5905010a16&q=Train%20station&near=56.377424%2C9.656695&key=ABQIAAAA1XbMiDxx_BTCY2_FkPh06RRaGTYH6UMl8mADNa0YKuWNNa8VNxQEerTAUcfkyrr6OwBovxn7TDAH5Q&v=1.0&nocache=1249640467498 |
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state = LookupStates.STARTED; |
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hasGps = false; |
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locManager = (LocationManager) cntx.getSystemService(Context.LOCATION_SERVICE); |
locManager = (LocationManager) cntx.getSystemService(Context.LOCATION_SERVICE); |
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/*//testcode |
satCount = 0; |
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List<String> provs = locManager.getAllProviders(); |
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for (String p : provs) { |
startTime = android.os.SystemClock.elapsedRealtime(); |
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Log.e("Provider", p); |
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} |
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provs = locManager.getProviders(true); |
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for (String p : provs) { |
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Log.e("ActiveProvider", p); |
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} |
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*/ |
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Criteria c = new Criteria(); |
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c.setAccuracy(Criteria.ACCURACY_FINE); |
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String bestProv = locManager.getBestProvider(c, true); |
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Log.e("BestProvider", bestProv); |
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if (bestProv != null) { |
List<String> providers = locManager.getProviders(true); |
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locManager.requestLocationUpdates(bestProv, 0, 0, this); |
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if (providers.size() > 0) { |
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for(String provider : providers) { |
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Log.i("Provider", ""+provider); |
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if (provider.equalsIgnoreCase("gps")) { |
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locManager.addGpsStatusListener(this); |
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hasGps = true; |
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} |
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locManager.requestLocationUpdates(provider, 0, 0, this); |
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Location tmpLastKnown = locManager.getLastKnownLocation(provider); |
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if (tmpLastKnown != null) { |
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saveLastKnownLocation(tmpLastKnown); |
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} |
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} |
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} else { |
} else { |
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// message that no suitable provider was found |
// message that no suitable provider was found |
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hndl.sendEmptyMessage(TrainInfoList.NOPROVIDER); |
//hndl.sendEmptyMessage(StationList.NOPROVIDER); |
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state = LookupStates.NOPROVIDER; |
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} |
} |
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} |
} |
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@Override |
@Override |
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public void onLocationChanged(Location location) { |
public void onLocationChanged(Location location) { |
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Log.i("Location", "Got location fix " + location.getLatitude() + ", " + location.getLongitude() + " accuracy=" + location.getAccuracy() + " provider=" +location.getProvider()); |
Log.i("Location", "Got location fix " + location.getLatitude() + ", " + location.getLongitude() + " accuracy=" + location.getAccuracy() + " provider=" +location.getProvider()); |
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if (location.getProvider().equals("gps") && location.getAccuracy() > 100) //if we have a gps provider lets wait for a more precise fix |
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return; |
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locManager.removeUpdates(this); |
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hndl.sendEmptyMessage(TrainInfoList.GOTLOCATION); |
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//ToDo: to be nice put the api key into the request |
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String urlSource = "http://www.google.com/uds/GlocalSearch?callback=google.search.LocalSearch.RawCompletion&context=1&q=Train%20station&near=" + location.getLatitude() + "%2C" + location.getLongitude() + "&v=1.0"; |
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//String urlSource = "http://www.google.com/uds/GlocalSearch?callback=google.search.LocalSearch.RawCompletion&context=1&q=Train%20station&near=56.2%2C9.0&v=1.0"; |
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try {/* |
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Log.e("Url", urlSource); |
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URL url = new URL(urlSource); |
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URLConnection connection = url.openConnection(); |
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connection.setConnectTimeout(10000); |
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String line; |
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StringBuilder builder = new StringBuilder(); |
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BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()), 8192); |
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while((line = reader.readLine()) != null) { |
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builder.append(line); |
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}*/ |
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String data = DownloadUtil.getContent(urlSource, 30000, "UTF-8"); |
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StringBuilder builder = new StringBuilder(data); |
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while (builder.charAt(0) != '{') |
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builder.deleteCharAt(0); |
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while (builder.charAt(builder.length()-1) != '}') |
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builder.deleteCharAt(builder.length()-1); |
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JSONObject json = new JSONObject(builder.toString()); |
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// now have some fun with the results... |
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JSONArray res = json.getJSONArray("results"); |
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Location tmpLocation = new Location("gps"); |
if (savedLocation == null || location.getAccuracy() < savedLocation.getAccuracy()) |
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stationList.clear(); |
savedLocation = new Location(location); //save a copy |
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for (int i=0; i<res.length(); i++) { |
if (hasGps) { |
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JSONObject jsonStation = res.getJSONObject(i); |
if (!location.getProvider().equals("gps")) { |
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return; // at least give the gps a chance |
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double lat = jsonStation.getDouble("lat"); |
} else if (location.getAccuracy() > 512) { |
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double lng = jsonStation.getDouble("lng"); |
return; //if we have a gps provider lets wait for a more precise fix |
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String title = jsonStation.getString("title"); |
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String addr = jsonStation.getString("streetAddress"); |
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tmpLocation.setLatitude(lat); |
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tmpLocation.setLongitude(lng); |
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float distance = location.distanceTo(tmpLocation); |
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stationList.add( new StationBean(title,lat,lng,(int)distance,addr) ); |
} |
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stopSearch(); |
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state = LookupStates.GOTLOCATION; |
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Log.e("Location", title + " " + lat +"," + lng); |
} |
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private void saveLastKnownLocation(Location loc) { |
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if (lastKnownLocation == null) { |
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lastKnownLocation = loc; |
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} else { |
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if (loc.getTime() > lastKnownLocation.getTime()) {//if loc is more recent than saved |
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lastKnownLocation = loc; |
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} |
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hndl.sendEmptyMessage(TrainInfoList.GOTSTATIONLIST); |
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} catch (Exception e) { |
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Log.e("Location","Location",e); |
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hndl.sendEmptyMessage(TrainInfoList.LOOKUPSTATIONFAILED); |
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} |
} |
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} |
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public void stopSearch() |
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{ |
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if (state == LookupStates.STARTED) { |
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state = LookupStates.IDLE; |
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locManager.removeGpsStatusListener(this); |
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locManager.removeUpdates(this); |
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} |
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} |
} |
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@Override |
@Override |
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public void onProviderDisabled(String provider) { |
public void onProviderDisabled(String provider) { |
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// TODO Auto-generated method stub |
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} |
} |
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@Override |
@Override |
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public void onProviderEnabled(String provider) { |
public void onProviderEnabled(String provider) { |
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// TODO Auto-generated method stub |
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} |
} |
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// TODO Auto-generated method stub |
// TODO Auto-generated method stub |
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} |
} |
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@Override //GpsStatus.Listener |
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public void onGpsStatusChanged(int event) { |
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if (event == GpsStatus.GPS_EVENT_SATELLITE_STATUS) { |
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int count = 0; |
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GpsStatus status = locManager.getGpsStatus(null); |
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for (GpsSatellite sat : status.getSatellites()) { |
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count ++; |
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} |
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satCount = count; |
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} |
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} |
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} |
} |