android - Get gps coordinates with asyncTask -
i need current coordinates. try next, not result.
public class fragmentnear extends sherlockfragment implements android.location.locationlistener { @override public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) { locationmanager = (locationmanager) getactivity().getsystemservice( context.location_service); locationmanager.requestlocationupdates( locationmanager.gps_provider, 0, 0, this); v = inflater.inflate(r.layout.fragment_near, null); downloadwebpagetask dw = new downloadwebpagetask(); dw.execute(""); return v; } @override public void onlocationchanged(location loc) { if (showmfd == 0) { log.d("mylogs", "-------- onlochanged " + mylat + " " + mylong); mylat = loc.getlatitude(); mylong = loc.getlongitude(); log.d("mylogs", "-------- onlochangedend " + mylat + " " + mylong); } } public void showmfd() { showmfd++; //my tasks } private class downloadwebpagetask extends asynctask<string, void, string> { @override protected string doinbackground(string... urls) { log.d("mylogs", "background"); while (mylat==0) { } showmfd(); return ""; } @override protected void onpreexecute() { super.onpreexecute(); pb = new progressdialog(getactivity()); pb.setmessage("Получение данных gps..."); pb.setprogressstyle(progressdialog.style_spinner); pb.show(); } @override protected void onpostexecute(string result) { pb.dismiss(); } } my logic in picture
an example of tracker class use wifi or classic gps (3g, h+, gprs...)
public class gpstracker extends service implements android.location.locationlistener { /** * attributes */ private static final string tag = gpstracker.class.getsimplename(); private context _context; private static gpstracker _instance; // minimum distance change updates in meters private static final long min_distance_change_for_updates = 0; // meters // minimum time between updates in milliseconds private static final long min_time_bw_updates = 1000 * 30 * 1; // minute // declaring location manager protected locationmanager _locationmanager; /** * public attributes */ boolean _isgpsenabled = false; boolean _isnetworkenabled = false; boolean _cangetlocation = false; public location _location; double _latitude; double _longitude; public gpstracker() { _context = null; } public static gpstracker getinstance() { if (_instance == null) { _instance = new gpstracker(); } return _instance; } public void set_context(context context) { this._context = context; } public location getlocation(context context) { _context = context; try { _locationmanager = (locationmanager) _context.getsystemservice(location_service); _isgpsenabled = _locationmanager.isproviderenabled(locationmanager.gps_provider); _isnetworkenabled = _locationmanager.isproviderenabled(locationmanager.network_provider); if (!_isgpsenabled && !_isnetworkenabled) { // no network provider enabled } else { this._cangetlocation = true; if (_isnetworkenabled) { _locationmanager.requestlocationupdates(locationmanager.network_provider, min_time_bw_updates, min_distance_change_for_updates, this); log.d("network", "network"); if (_locationmanager != null) { _location = _locationmanager.getlastknownlocation(locationmanager.network_provider); if (_location != null) { _latitude = _location.getlatitude(); _longitude = _location.getlongitude(); } } } // if gps enabled lat/long using gps services if (_isgpsenabled) { if (_location == null) { _locationmanager.requestlocationupdates(locationmanager.gps_provider, min_time_bw_updates, min_distance_change_for_updates, this); log.d("gps enabled", "gps enabled"); if (_locationmanager != null) { _location = _locationmanager.getlastknownlocation(locationmanager.gps_provider); if (_location != null) { _latitude = _location.getlatitude(); _longitude = _location.getlongitude(); } } } } } } catch (exception e) { // nothing } return _location; } public void stopusinggps() { if (_locationmanager != null) { _locationmanager.removeupdates(gpstracker.this); } } public double getlatitude() { if (_location != null) { _latitude = _location.getlatitude(); } return _latitude; } public double getlongitude() { if (_location != null) { _longitude = _location.getlongitude(); } return _longitude; } public boolean cangetlocation() { return this._cangetlocation; } /** * function show settings alert dialog on pressing settings button lauch settings options */ public void showsettingsalert(string title, string msg) { alertdialog.builder alertdialog = new alertdialog.builder(_context); alertdialog.settitle(title); alertdialog.setmessage(msg); // settings button alertdialog.setpositivebutton("paramètres", new dialoginterface.onclicklistener() { public void onclick(dialoginterface dialog, int which) { intent intent = new intent(settings.action_location_source_settings); _context.startactivity(intent); } }); // cancel button alertdialog.setnegativebutton("annuler", new dialoginterface.onclicklistener() { public void onclick(dialoginterface dialog, int which) { dialog.cancel(); } }); // show alertdialog.show(); } @override public void onlocationchanged(location location) { } @override public void onproviderdisabled(string provider) { } @override public void onproviderenabled(string provider) { } @override public void onstatuschanged(string provider, int status, bundle extras) { } @override public ibinder onbind(intent arg0) { return null; } } it fast network/gps/phone (thanks android) need create gpstracker.java object :
//create instance singleton gpstracker tracker = gpstracker.getinstance(); // can use in "if" test if location updated ok gpstracker.cangetlocation() //update location as want method tracker.getlocation(this); //retreive location when need location location = etablissementapplication._gpstracker._location in ondestroy() or when don't want use gps anymore don't forget :
if (tracker != null) { tracker.stopusinggps(); }
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