Reputation: 5016
I have to send my current location details (lat & long) to server periodically (Ex: for every 5 minutes). Is there any best way? I know how to get the current location & how to send the details to server. But how do I repeat this in periodic intervals?
Upvotes: 11
Views: 34505
Reputation: 2905
Register an alarm using AlarmManager
to wake up after 5min when user open the application first time. create a service(fetch location and update to server) to run when alarm notifies your application. After the service finished the work , register for an alarm again to wake up after 5min. by this way you can achieve your task.
ref
Android: How to periodically send location to a server
http://developer.android.com/reference/android/app/AlarmManager.html
http://developer.android.com/reference/android/app/Service.html
1st Edit - Adding code sample
Step 1 - Create alarm manager and register alarm
AlarmManager alarmMgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(Main.this, YourWakefulReceiver.class);
bool flag = (PendingIntent.getBroadcast(Main.this, 0,
intent, PendingIntent.FLAG_NO_CREATE)==null);
/*Register alarm if not registered already*/
if(flag){
PendingIntent alarmIntent = PendingIntent.getBroadcast(Main.this, 0,
intent, PendingIntent.FLAG_UPDATE_CURRENT);
// Create Calendar obj called calendar
Calendar calendar = Calendar.getInstance();
/* Setting alarm for every one hour from the current time.*/
int intervalTimeMillis = 1000 * 60 * 60; // 1 hour
alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), intervalTimeMillis,
alarmIntent);
}
Step 2 - Create Receiver class
public class YourWakefulReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context, SimpleWakefulService.class);
startWakefulService(context, service);
}
}
}
Setp 3 - Create Service class
public class SimpleWakefulService extends IntentService {
private static String tagName = "YourService";
public SimpleWakefulService() {
super("YourService");
}
@Override
protected void onHandleIntent(Intent intent) {
// Start your location
LocationUtil.startLocationListener();
try {
// Wait for 10 seconds
Thread.sleep(1000*10);
} catch (InterruptedException e) {
}
//Stop location listener
LocationUtil.stopLocationListener();
// upload or save location
uploadGps();
SimpleWakefulReceiver.completeWakefulIntent(intent);
}
}
Step 4 - Register service and receiver
<service android:name="com.envision.ghari.services.SimpleWakefulService"></service>
<receiver android:name="com.envision.ghari.receivers.YourWakefulReceiver"></receiver>
Note : This code is to understand the implementation. It will not compile.
Upvotes: 11
Reputation: 13501
Using BroadcastReceiver is a good choice for sending periodic requests.
Here is a tutorial to use BroadcastReceiver.
Upvotes: 2
Reputation: 1219
I am developing an application that gets position of the cell phone all day long in 10 and 15 seconds in a service, it works fine but sometimes the method OnLocationChanged of the Network provider listener stop to being called.
import android.location.Address;
import android.location.Geocoder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import java.io.IOException;
import java.util.List;
import foodinn.databases.LocationUpdaterDatabase;
public class LocationUpdatesActivity extends AppCompatActivity {
private LocationUpdaterDatabase locationUpdaterDatabase;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_location_updates);
locationUpdaterDatabase = new LocationUpdaterDatabase(this, "Locations.db", null, 1);
final Geocoder geocoder = new Geocoder(this);
ListView listView = (ListView) findViewById(R.id.locationUpdatesListView);
listView.setAdapter(new SimpleCursorAdapter(this, R.layout.location_updates_list_view_view, locationUpdaterDatabase.getLocationUpdates(), new String[] {"latitude", "longitude", "whenUpdated"}, new int[] {R.id.listViewTextView1, R.id.listViewTextView2, R.id.listViewTextView3}, SimpleCursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER));
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
double latitude = Double.valueOf(((TextView) view.findViewById(R.id.listViewTextView1)).getText().toString());
double longitude = Double.valueOf(((TextView) view.findViewById(R.id.listViewTextView2)).getText().toString());
try {
List<Address> addressList = geocoder.getFromLocation(latitude, longitude, 1);
String address = addressList.get(0).getAddressLine(0); // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
String city = addressList.get(0).getLocality();
String state = addressList.get(0).getAdminArea();
String country = addressList.get(0).getCountryName();
String postalCode = addressList.get(0).getPostalCode();
String knownName = addressList.get(0).getFeatureName();
((TextView) view.findViewById(R.id.listViewTextView4)).setText(address + ", " + city + ", " + country);
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
}
Upvotes: -1
Reputation: 33996
Best way to wakeup the service using the AlarmManager
and post the location you get to the server.
Upvotes: 1
Reputation: 29199
As it does not require UI interaction you should create a service for this, service will invoke requestLocationUpdates method, in this method, pass parameter minimum time to 5 mins.
Upvotes: 0