Основная идея - отслеживать друзей в фоновом режиме и каждые 3 минуты обновлять их места и отправлять местоположение по http;
Когда я запускаю его на эмуляторе, он заставляет меня закрыться.
Я хочу, чтобы вы помнили, что я новичок в Android, и я застрял в этом полтора месяца, но я не знаю, как подключить службу Android к httpPost.
public class Tracker extends Service {
private LocationManager locManager;
private LocationListener locListener;
private TelephonyManager mTelephonyMgr;
// creating and starting the service
public void onCreate() {
super.onCreate();
startService();
Toast.makeText(getApplicationContext(), "Service created", Toast.LENGTH_LONG);
}
/*public void onStart(){
super.onStart(intent, startId)
startService();
}*/
// shutting down the service
public void onDestroy() {
super.onDestroy();
shutDownService();
Toast.makeText(getApplicationContext(), "Service is destroyed", Toast.LENGTH_LONG);
}
public void shutDownService() {
locManager.removeUpdates(locListener);
}
private final IBinder mBinder = new LocalBinder();
public IBinder onBind(Intent intent) {
return mBinder;
}
public class LocalBinder extends Binder {
Tracker.getService() {
return Tracker.this;
}
}
public void startService() {
locManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locListener = new MyLocationListener();
locManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0,
0, locListener);
locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
locListener);
postData(null, null); // return START_STICKY;
}
public void postData(String currLat, String currLon) {
String Text2 = "String is" + "Latitude = " + currLat + "Longitude = "
+ currLon;
String Text3 = "Phone number is: " + getMyDigitsPhoneNumber();
// showing implicit intent
Toast.makeText(getApplicationContext(), Text2, Toast.LENGTH_LONG);
Toast.makeText(getApplicationContext(), Text3, Toast.LENGTH_LONG);
HttpPost httppost = new HttpPost(
"http://87.88.0.178/firm/logger.php");
// Add the data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("PhoneNumber", getMyDigitsPhoneNumber()));
nameValuePairs.add(new BasicNameValuePair("Latitude", currLat));
nameValuePairs.add(new BasicNameValuePair("Longitude", currLon));
HttpClient client = new DefaultHttpClient();
try {
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = client.execute(httppost);
HttpEntity entity = response.getEntity();
String responseText = EntityUtils.toString(entity);
responseText = responseText.trim();
} catch (IOException e) {
e.printStackTrace();
}
}
public String getMyPhoneNumber() {
mTelephonyMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
return mTelephonyMgr.getLine1Number();
}
public String getMyDigitsPhoneNumber() {
String phoneNum = getMyPhoneNumber();
return phoneNum.substring(2);
}
// retrieving location
public class MyLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location loc) {
if (loc != null)
loc.getLatitude();
loc.getLongitude();
double lat = loc.getLatitude()*1E6;
double lon = loc.getLongitude()*1E6;
String curr_lat = Double.toString(lat);
String curr_lon = Double.toString(lon);
postData(curr_lat, curr_lon);
String Text = "My current location is: " + "Latitud = "
+ loc.getLatitude()*1E6 +
"Longitud = " + loc.getLongitude()*1E6;
Toast.makeText(getApplicationContext(), Text, Toast.LENGTH_SHORT);
}
//took from android website
private static final int THREE_MINUTES = 1000 * 60 * 3; // three minutes
protected boolean isBetterLocation(Location loc,
Location currentBestLocation) {
if (currentBestLocation == null) {
// A new location is always better than no location
return true;
}
// Check whether the new location fix is newer or older
long timeDelta = loc.getTime() - currentBestLocation.getTime();
boolean isSignificantlyNewer = timeDelta > THREE_MINUTES;
boolean isSignificantlyOlder = timeDelta < -THREE_MINUTES;
boolean isNewer = timeDelta > 0;
// If it's been more than two minutes since the current location,
// use the new location
// because the user has likely moved
if (isSignificantlyNewer) {
return true;
// If the new location is more than two minutes older, it must
// be worse
} else if (isSignificantlyOlder) {
return false;
}
// Check whether the new location fix is more or less accurate
int accuracyDelta = (int) (loc.getAccuracy() - currentBestLocation
.getAccuracy());
boolean isLessAccurate = accuracyDelta > 0;
boolean isMoreAccurate = accuracyDelta < 0;
boolean isSignificantlyLessAccurate = accuracyDelta > 200;
// Check if the old and new location are from the same provider
boolean isFromSameProvider = isSameProvider(loc.getProvider(),
currentBestLocation.getProvider());
// Determine location quality using a combination of timeliness and
// accuracy
if (isMoreAccurate) {
return true;
} else if (isNewer && !isLessAccurate) {
return true;
} else if (isNewer && !isSignificantlyLessAccurate
&& isFromSameProvider) {
return true;
}
return false;
}
/** Checks whether two providers are the same */
private boolean isSameProvider(String provider1, String provider2) {
if (provider1 == null) {
return provider2 == null;
}
return provider1.equals(provider2);
}
@Override
public void onProviderDisabled(String provider) {
// required for interface, not used
}
@Override
public void onProviderEnabled(String provider) {
// required for interface, not used
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// required for interface, not used
}
}
}