getting latitude and longitude using gps every 10 minute in background android

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猫巷女王i
猫巷女王i 2021-01-01 04:00

I am done getting latitude and longitude using LocationManager and working proper.

Requirement:

get latitude and longitude every

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5条回答
  • 2021-01-01 04:22

    I do not see any service finalization command, while you are trying to get position only on start command.

    Generally speaking - it's quite complex problem: 10 minutes period suggests usage of AlarmManager - it's ok but... Getting position sometimes lasts much more than 10 minutes. GPS receiver consumes extraordinary amount of battery when it try to get position fix, so there is possibility, that in some conditions switching GPS on/off periodically will consume more battery than leaving it turned on. Consider some "loosy compression" - combine different location providers to call GPS only when really needed (i.e. time, coarse location changed etc.)

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  • 2021-01-01 04:26

    I am using this way and solve my problem.

    PendingIntent pi=PendingIntent.getBroadcast(context, 0, i, 0);
        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), PERIOD , pi);
    

    I am don't know this is right or wrong.but work for me. Thanks @Lucifer,@Maya mAku and @piotrpo for your guidline.

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  • 2021-01-01 04:29

    Try this way,

    instead of this line

    alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
             SystemClock.elapsedRealtime()+60000,PERIOD,pi);
    

    try my logic,

    alarmManager.set(AlarmManager.RTC_WAKEUP, 60 * 1000, pi);
    

    You can also see a very good example of AlarmManager.

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  • 2021-01-01 04:41
    Try By this one :
    
    private void doSomethingRepeatedly() {
          timer.scheduleAtFixedRate( new TimerTask() {
                public void run() {
    
                      try{
    
                //Do your work here
    
                      }
                      catch (Exception e) {
                          // TODO: handle exception
                      }
    
                 }
                }, 0, 10000);
                         }
    
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  • 2021-01-01 04:47

    your location will really not be saved in the database because every time your location is updated(via onLocationChanged(Location location))

    what you should do is bring your timerinitialization in your OnCreate() method. then declare these variables.

    double lat = location.getLatitude();
    double lng = location.getLongitude();
    double alt = location.getAltitude();
    

    as global and have them updated in the onLocationChanged(Location location)method. This way, whenever the timer calls on persistence in your database, the lat, lng, alt values will be available and be updated based on your latest location.

    //decalred as global variables
    String curTime;
    double lat;
    double lng;
    double alt;
    
     public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    LocationManager locationManager;
    String context = Context.LOCATION_SERVICE;
    locationManager = (LocationManager)getSystemService(context);
    
    Criteria criteria = new Criteria();
    criteria.setAccuracy(Criteria.ACCURACY_FINE);
    criteria.setAltitudeRequired(false);
    criteria.setBearingRequired(false);
    criteria.setCostAllowed(true);
    criteria.setPowerRequirement(Criteria.POWER_LOW);
    String provider = locationManager.getBestProvider(criteria, true);
    
        //Initialize timer
        Timer timer = new Timer();
            timer.schedule(new TimerTask(){
                @Override
                public void run(){
                    db.execSQL("INSERT INTO location (longitude,latitude,altitude,tgl_buat) VALUES " +
                            "('"+lng+"','"+lat+"','"+alt+"','"+curTime+"')");
                    db.close();
                }
            }, 10*60*1000, 10*60*1000);
    
    
    updateWithNewLocation(null);
    
    locationManager.requestLocationUpdates(provider, (10*60*1000), 10,
                                           locationListener);
       }
       private final LocationListener locationListener = new LocationListener() {
       public void onLocationChanged(Location location) {
       updateWithNewLocation(location);
    }
    
    public void onProviderDisabled(String provider){
      updateWithNewLocation(null);
    }
    
    public void onProviderEnabled(String provider){ }
    public void onStatusChanged(String provider, int status, 
                                Bundle extras){ }
     };
     public void updateWithNewLocation(Location location) {
    
    
        if (location != null) {
            Dbhelper helper = new Dbhelper(this);
            final SQLiteDatabase db = helper.getWritableDatabase();
            long time = System.currentTimeMillis();
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd kk:mm:ss");
            curTime = df.format(time);
            lat = location.getLatitude();
            lng = location.getLongitude();
            alt = location.getAltitude();
            System.out.println(lat);
            System.out.println(lng);
            System.out.println(alt);
    
        } 
    
      }
    

    ADDED:- and if you draw a path then you use a This code

    /** Called when the activity is first created. */
    private List<Overlay> mapOverlays;
    
      private Projection projection;  
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
    linearLayout = (LinearLayout) findViewById(R.id.zoomview);
    mapView = (MapView) findViewById(R.id.mapview);
    mapView.setBuiltInZoomControls(true);
    
    mapOverlays = mapView.getOverlays();        
    projection = mapView.getProjection();
    mapOverlays.add(new MyOverlay());        
    
    }
    
      @Override
      protected boolean isRouteDisplayed() {
      return false;
      }
    
     class MyOverlay extends Overlay{
    
      public MyOverlay(){
    
      }   
    
    public void draw(Canvas canvas, MapView mapv, boolean shadow){
        super.draw(canvas, mapv, shadow);
    
        Paint   mPaint = new Paint();
        mPaint.setDither(true);
        mPaint.setColor(Color.RED);
        mPaint.setStyle(Paint.Style.FILL_AND_STROKE);
        mPaint.setStrokeJoin(Paint.Join.ROUND);
        mPaint.setStrokeCap(Paint.Cap.ROUND);
        mPaint.setStrokeWidth(2);
    
        GeoPoint gP1 = new GeoPoint(19240000,-99120000);
        GeoPoint gP2 = new GeoPoint(37423157, -122085008);
    
        Point p1 = new Point();
        Point p2 = new Point();
        Path path = new Path();
    
        projection.toPixels(gP1, p1);
        projection.toPixels(gP2, p2);
    
        path.moveTo(p2.x, p2.y);
        path.lineTo(p1.x,p1.y);
    
        canvas.drawPath(path, mPaint);
    }
    
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