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我在使用LocationListener.But獲取應用程序中的當前位置時,當我將縮放應用於地圖時,第一次縮放會顯示當前位置,但放大一段時間後會放大。我無法找到過去的3天這個解決方案,請告訴我任何一個如何使用縮放範圍獲取當前位置
我的動態
loc = mMapView.getLocationDisplayManager();
loc.setAutoPanMode(AutoPanMode.LOCATION);
loc.setLocationListener(new MyLocationListener(LaunchingMapActivity.this,mMapView));
loc.start();
mLocation = loc.getPoint();
Log.e("mLocation", ""+mLocation);
mapLocatiomFromLoc = loc.getLocation();
double longitude=mapLocatiomFromLoc.getLongitude();
double latitude=mapLocatiomFromLoc.getLatitude();
p=new Point((float)longitude,(float)latitude);
MyLocationListener:
public class MyLocationListener implements LocationListener {
Geometry mLocation = null;
private MapView mMapView;
private Context mContext;
public MyLocationListener(Context context,MapView mapView) {
super();
this.mMapView=mapView;
}
/**
* If location changes, update our current location. If being found for
* the first time, zoom to our current position with a resolution of 20
*/
public void onLocationChanged(Location loc1) {
if (loc1 == null)
return;
boolean zoomToMe = (mLocation == null) ? true : false;
mLocation = new Point(loc1.getLongitude(), loc1.getLatitude());
Log.e("ONCHANGEmLocation", ""+mLocation);
if (zoomToMe) {
Point mPoint = (Point) GeometryEngine.project(mLocation, SpatialReference.create(20439)
,SpatialReference.create(20439));
Log.e("mPoint",""+ mPoint);
// graphic = new Graphic((Geometry) p, (Symbol) sms, hm);
// locationLayer.addGraphic(graphic);
// mMapView.zoomToResolution(mPoint, 20.0);
}
}
public void onProviderDisabled(String provider) {
Toast.makeText(mContext, "GPS Disabled",
Toast.LENGTH_SHORT).show();
}
public void onProviderEnabled(String provider) {
Toast.makeText(mContext, "GPS Enabled",
Toast.LENGTH_SHORT).show();
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
地圖通常放大中心,所以如果你不在地圖的中心,那麼連續的縮放將縮小你的視野。只需實現'map.setMyLocationEnabled(true)'給你一個按鈕來平移到你當前的位置。 – j4rey89 2014-11-25 07:37:42
感謝您的回覆,但在我的地圖 – Durga 2014-11-25 07:57:19
上沒有setMyLocationEnabled(true)方法,您需要使用'mapView.getMap()'獲得對'GoogleMap'的引用。然後'googleMap.setMyLocationEnabled(true)'。 – j4rey89 2014-11-25 08:45:25