public class MainActivity extends Activity { MapView mMapView; LocationDisplayManager lDisplayManager = null; GraphicsLayer gpsGraphicsLayer; Polyline mPolyline; int pointCount = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // after the content of this activity is set // the map can be accessed from the layout mMapView = (MapView) findViewById(R.id.map); ArcGISTiledMapServiceLayer tile = new ArcGISTiledMapServiceLayer("http://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineCommunity_Mobile/MapServer"); mMapView.addLayer(tile); gpsGraphicsLayer = new GraphicsLayer(); mMapView.addLayer(gpsGraphicsLayer); mPolyline = new Polyline(); mMapView.setOnStatusChangedListener(new OnStatusChangedListener() { @Override public void onStatusChanged(Object source, STATUS status) { if (source == mMapView && status == STATUS.INITIALIZED) { lDisplayManager = mMapView.getLocationDisplayManager();//获取LocationDisplayManager lDisplayManager.setAutoPanMode(LocationDisplayManager.AutoPanMode.OFF); lDisplayManager.setShowLocation(false);//不显示当前位置，坐标系不一致坐标偏移严重 lDisplayManager.setShowPings(false); lDisplayManager.setAccuracyCircleOn(false); lDisplayManager.setAllowNetworkLocation(true); lDisplayManager.setLocationListener(new LocationListener() { @Override public void onLocationChanged(Location loc) { //火星坐标转换 double[] gcj = CoordinateConvert.wgs2GCJ(loc.getLatitude(), loc.getLongitude()); Point wgspoint = new Point(gcj[1], gcj[0]); Point p = (Point) GeometryEngine.project(wgspoint, SpatialReference.create(SpatialReference.WKID_WGS84), mMapView.getSpatialReference()); SimpleMarkerSymbol ptSym = new SimpleMarkerSymbol(Color.BLUE, 15, SimpleMarkerSymbol.STYLE.CIRCLE); Graphic graphic = new Graphic(p, ptSym, null); if (pointCount == 0) { mPolyline.startPath(p.getX(), p.getY()); mMapView.zoomTo(p, 17); } else { mPolyline.lineTo(p.getX(), p.getY());//点画线 mMapView.centerAt(p, true); } gpsGraphicsLayer.removeAll(); SimpleLineSymbol lineSym = new SimpleLineSymbol(Color.RED, 10); Graphic g = new Graphic(mPolyline, lineSym); gpsGraphicsLayer.addGraphic(g); pointCount++; gpsGraphicsLayer.addGraphic(graphic); } @Override public void onProviderDisabled(String arg0) { } @Override public void onProviderEnabled(String arg0) { } @Override public void onStatusChanged(String arg0, int arg1, Bundle arg2) { } }); // Actionlistener lDisplayManager.start(); } } }); } }
没有整理与归纳的知识，一文不值！高度概括与梳理的知识，才是自己真正的知识与技能。 永远不要让自己的自由、好奇、充满创造力的想法被现实的框架所束缚，让创造力自由成长吧！ 多花时间，关心他（她）人，正如别人所关心你的。理想的腾飞与实现，没有别人的支持与帮助，是万万不能的。
本文转自wenglabs博客园博客，原文链接：http://www.cnblogs.com/arxive/p/6243776.html
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