Android 在地图上画矩形

[java] view plain copy

 

 

point1=map.toMapPoint(400,426);
point2=map.toMapPoint(600,640);
initextext = new Envelope(point1.getX(),point1.getY(),point2.getX(),point2.getY());
SimpleFillSymbol sfs=new SimpleFillSymbol(Color.GRAY);
sfs.setAlpha(60);
agraphicLayer.addGraphic(new Graphic(initextext,sfs));
map.addLayer(agraphicLayer);

  先根据俩对角线的点获取Extent