android google地图得到此手机的x y坐标，在线等

2012-03-09 02:11:37 1.1k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Android集成Google Maps实现真实道路导航路线绘制在移动开发中，‘两点间路线绘制’常被误解为简单几何绘图，实则涉及地理坐标系统、道路拓扑建模与动态路径渲染等核心概念。其原理基于调用专业路线规划服务（如Google Directions API）获取带转向指令与真实道路走向的经纬度序列，再经坐标解码、屏幕适配、图层叠加等步骤完成高保真渲染。该技术具备精准定位、交互响应、缩放自适应等工程价值，广泛应用于物流调度、本地生活、出行服务等场景。本文聚焦 Android 平台下 Google Maps SDK 与 Directions API 的协同实践，深入解析 P 阅读详情

下面一段mapactivity代码，可正常显示地图，如下

public class Map4Activity extends MapActivity{
private MapView mMapView;
private MapController mMapController;
private GeoPoint mGeoPoint;
private GeoPoint mGeoPoint2;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mMapView = (MapView) findViewById(R.id.mapView);
mMapView.setStreetView(false); //取得MapController对象(控制MapView)
mMapController = mMapView.getController();
mMapView.setEnabled(true);
mMapView.setClickable(true); //设置地图支持缩放
mMapView.setBuiltInZoomControls(true); //设置起点为成都
mGeoPoint = new GeoPoint((int) (28.68 * 1000000), (int) (115.89 * 1000000)); //定位到成都
mMapController.animateTo(mGeoPoint); //设置倍数(1-21)
mMapController.setZoom(15); //添加Overlay，用于显示标注信息
MyLocationOverlay myLocationOverlay = new MyLocationOverlay();
List<Overlay> list = mMapView.getOverlays();
list.add(myLocationOverlay);
}
protected boolean isRouteDisplayed()
{
return false;
}
class MyLocationOverlay extends Overlay {
public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when)
{
super.draw(canvas, mapView, shadow);
Paint paint = new Paint();
Point myScreenCoords = new Point();
mapView.getProjection().toPixels(mGeoPoint, myScreenCoords);
paint.setStrokeWidth(1);
paint.setARGB(255, 255, 0, 0);
paint.setStyle(Paint.Style.STROKE);
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.map_point);
String xx="-1655";
String yy="646";
Float x1;
x1=Float.parseFloat(xx);
Float y1;
y1=Float.parseFloat(yy);

canvas.drawBitmap(bmp, myScreenCoords.x+50, myScreenCoords.y+50, paint);
canvas.drawText("天府广场", myScreenCoords.x+50, myScreenCoords.y+50, paint);
System.out.println("x"+myScreenCoords.x);
return true;
}
}

}

现需：如何得到此手机的x y坐标呢，thanks

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