PowenKo, Android Tutorial 84-3, GPS, get mapView lat and long on the pixel point.

//取得實際螢幕的寬高 來換算經緯度
	int width = display.getWidth();
	int height = display.getHeight();

GeoPoint t_lefttop=mapView.getProjection().fromPixels(0,0);
GeoPoint t_rightdown=mapView.getProjection().fromPixels(width,height);
double t_lefttop_long=t_lefttop.getLongitudeE6()/1E6;
double t_lefttop_lat=t_lefttop.getLatitudeE6()/1E6;
double t_rightdown_long=t_rightdown.getLongitudeE6()/1E6;
double t_rightdown_lat=t_rightdown.getLatitudeE6()/1E6;