Hai am trying to get the gps location using BroadCast Receiver.its working fine,But i want to get the location every half hour once.i used **MINIMUM_TIME_BETWEEN_UPDATES ** 30mts .i got when latitude and longitude value changed
update
public class MainActivity extends Activity implements LocationListener {
final DBAdapter1 db=new DBAdapter1(this);
private ConnectivityReceiver receiver = null;
private TextView txtNetworkInfo ;
private static TextView latituteField;
private static TextView longitudeField;
private LocationManager locationManager;
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
private static final String HostUrl =" http://xxx/Service.svc";
// private static final String HostUrl =" http://yyyService.svc";
private static final String NAMESPACE = "http://tempuri.org/";
private HttpTransportSE httpTransport = new HttpTransportSE(HostUrl);
private String provider;
private SoapObject request=null;
private static final long MINIMUM_DISTANCE_CHANGE_FOR_UPDATES = 1; // in Meters
private static final long MINIMUM_TIME_BETWEEN_UPDATES = 1800000; // in Milliseconds
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
latituteField = (TextView) findViewById(R.id.TextView02);
longitudeField = (TextView) findViewById(R.id.TextView04);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// Define the criteria how to select the locatioin provider -> use
// default
Criteria criteria = new Criteria();
Log.i("ConnTest",locationManager.toString());
provider = locationManager.getBestProvider(criteria, false);
Location location = locationManager.getLastKnownLocation(provider);
// Initialize the location fields
if (location != null) {
System.out.println("Provider " + provider + " has been selected.");
float lat = (float) (location.getLatitude());
float lng = (float) (location.getLongitude());
latituteField.setText(String.valueOf(lat));
longitudeField.setText(String.valueOf(lng));
} else {
latituteField.setText("provider not available");
longitudeField.setText("provider not available");
}
txtNetworkInfo = (TextView)findViewById(R.id.txtNetworkInfo);
receiver = new ConnectivityReceiver();
registerReceiver(receiver,new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
}
@Override
protected void onResume() {
super.onResume();
//locationManager.requestLocationUpdates(provider,1000, 1, this);
locationManager.requestLocationUpdates(
provider,
MINIMUM_TIME_BETWEEN_UPDATES,
MINIMUM_DISTANCE_CHANGE_FOR_UPDATES,
this
);
}
/* Remove the locationlistener updates when Activity is paused */
@Override
protected void onPause() {
super.onPause();
locationManager.removeUpdates(this);
}
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
float lat = (float) (location.getLatitude());
float lng = (float) (location.getLongitude());
longitudeField.setText(String.valueOf(lng));
latituteField.setText(String.valueOf(lat));
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
Toast.makeText(this, "Enabled new provider " + provider,
Toast.LENGTH_SHORT).show();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
Toast.makeText(this, "Disenabled provider " + provider,
Toast.LENGTH_SHORT).show();
}
protected void Display(Cursor c) {
Toast.makeText(this, "rowid: " + c.getString(0) + "\n" +
"Latitude: " + c.getString(1) + "\n" + "Longitude: " + c.getString(2) + "\n" +
Toast.LENGTH_LONG, 0).show();
}
@Override
protected void onDestroy() {
unregisterReceiver(receiver);
super.onDestroy();
}
private String getNetworkStateString(NetworkInfo.State state){
String stateString = "Unknown";
switch(state)
{
case CONNECTED: stateString = "Connected"; break;
case CONNECTING: stateString = "Connecting"; break;
case DISCONNECTED: stateString = "Disconnected"; break;
case DISCONNECTING: stateString = "Disconnecting"; break;
case SUSPENDED: stateString = "Suspended"; break;
default: stateString = "Unknown"; break;
}
return stateString;
}
private class ConnectivityReceiver extends BroadcastReceiver{
private Timer mTimer;
private TimerTask mTimerTask;
@Override
public void onReceive(Context context, Intent intent) {
NetworkInfo info = intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
if(null != info)
{
String state = getNetworkStateString(info.getState());
if(state.equals("Connected")){
try{
mTimer = new Timer();
mTimer.scheduleAtFixedRate(mTimerTask,1000,1800000);
mTimerTask = new TimerTask() {
@Override
public void run() {
SoapPrimitive response=null;
final String methodname="InsertAllGPSInformation";
request = new SoapObject(NAMESPACE,methodname);
envelope.dotNet = true;
request.addProperty("Longitude",longitudeField.getText().toString());
request.addProperty("Latitude",latituteField.getText().toString());
request.addProperty("Date",newtime);
envelope.setOutputSoapObject(request);
String result = null;
try
{
httpTransport.call(NAMESPACE+"IService/"+methodname, envelope);
response = ( SoapPrimitive )envelope.getResponse();
result=response.toString();
}
catch(Exception e)
{
Toast.makeText(getBaseContext(), "Your Net Connected or Not Login to Net"+"", Toast.LENGTH_LONG).show();
Log.e("Upload Picture Error:",e.getMessage());
}
}
};
}
catch(Exception e)
{
Toast.makeText(getBaseContext(),e.getMessage()+"", Toast.LENGTH_LONG).show();
Log.e("Upload Picture Error:",e.getMessage());
}
I guess the question is “why do I get more updates than once every 30 minutes?”:
Then the answer would be: “the minimum time interval for notifications, in milliseconds. This field is only used as a hint to conserve power, and actual time between location updates may be greater or lesser than this value.”.
See http://developer.android.com/reference/android/location/LocationManager.html
Alternatively you could use a Handler or trigger an alarm every 30′ and request a single location update when the alarm fires. Starting with API 9 there is a requestSingleUpdate().