Question

我正在使用samsung spica 1.5测试当前的gps位置应用程序但是它没有显示我当前的位置它只是向我显示另一个位置。

这是我的代码：

public class MaptestActivity extends MapActivity implements LocationListener {
     private MapView mapView = null;
        private LocationManager lm = null;
        private double lat = 0;
        private double lng = 0;
        private MapController mc = null;
        private MyLocationOverlay myLocation = null;
        private String current;
        private PositionMarkersList positionMarkersList = null;

        @Override
        public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mapView = (MapView) this.findViewById(R.id.mapView);
        mapView.setBuiltInZoomControls(true);

        lm = (LocationManager) this.getSystemService(LOCATION_SERVICE);
        lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10000, 0, this);
        lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 10000, 0, this);

        mc = mapView.getController();
        mc.setZoom(15);





        myLocation = new MyLocationOverlay(getApplicationContext(), mapView);
        myLocation.runOnFirstFix(new Runnable() {       
            public void run() {
            mc.animateTo(myLocation.getMyLocation());
            mc.setZoom(17);


            }

        }); 

        mapView.getOverlays().add(myLocation);
        GeoPoint pp=myLocation.getMyLocation();

        //addPosition(pp); 
        if (myLocation.isMyLocationEnabled()!=false)
        {
            GeoPoint p =myLocation.getMyLocation();
            lat= p.getLatitudeE6();
            lng= p.getLongitudeE6();
            Toast.makeText(getBaseContext(),
                     "geolocalisation activÈ lat: "+lat+ " long: " +lng,
                     Toast.LENGTH_SHORT).show();
        }
        else
        {

            Toast.makeText(getBaseContext(),
                     "geolocalisation desactivÈe" ,
                     Toast.LENGTH_SHORT).show();
        }



        }

        @Override
        protected void onResume() {
        super.onResume();
        myLocation.enableMyLocation();
        myLocation.enableCompass();
        }

        @Override
        protected boolean isRouteDisplayed() {
        return false;
        }

        @Override
        public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_S) {
            mapView.setSatellite(!mapView.isSatellite());
            return true;
        }
        return super.onKeyDown(keyCode, event);
        }

        public void onLocationChanged(Location location) {
        lat = location.getLatitude();
        lng = location.getLongitude();
        Toast.makeText(
            getBaseContext(),
            "Location change to : Latitude = " + lat + " Longitude = "
                + lng, Toast.LENGTH_SHORT).show();
        GeoPoint p = new GeoPoint((int) (lat * 1E6), (int) (lng * 1E6));
        mc.animateTo(p);
        mc.setCenter(p);
        }

        public void onProviderDisabled(String provider) {
        }

        public void onProviderEnabled(String provider) {
        }

        public void onStatusChanged(String provider, int status, Bundle extras) {
        }


 //ajout d'une position

        private void addPosition(GeoPoint geoPoint) {
            OverlayItem overlayitem = new OverlayItem(geoPoint, current, current);
            positionMarkersList.addMarker(overlayitem);
        }

}

有人对此有任何想法吗？

当我点击运行来测试应用程序时，我有测试方法列表（虚拟设备......）但是有一个“！”靠近手机的名字，我不知道为什么。

谢谢！

Answer 1

您必须使用Google API制作虚拟设备。

此外，在显示您的设备位置的地方，我可以知道地图上显示的位置离您当前位置的距离吗？

Answer 2

确保在AndroidManifest.xml中包含正确的位置服务权限!!!

GPS： ACCESS_FINE_LOCATION

WIFI： ACCESS_COARSE_LOCATION

所有权限：can be found here

Answer 3

public Location getCurrentLocation() {
    try {

        LocationManager lm = (LocationManager)     getSystemService(Context.LOCATION_SERVICE);
        // ---Get the status of GPS---
        boolean isGPS = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);

        // If GPS is not enable then it will be on
        if (!isGPS) {
            Intent intent = new Intent(
                    "android.location.GPS_ENABLED_CHANGE");
            intent.putExtra("enabled", true);
            sendBroadcast(intent);
        }

        Location location = lm
                .getLastKnownLocation(LocationManager.GPS_PROVIDER);
        if (location == null) {
            location = lm
                    .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
        }
        return location;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

Android当前gps位置不正确

3 个答案: