我正在进行一些在Android地图活动中的数学计算,我需要找到用户在地图上点击的GeoPoint的位置。我知道我需要使用onTouch事件处理程序。目前它看起来是这样的:
@Override
public boolean onTouch(View v, MotionEvent event) {
int action = event.getAction();
if(action == MotionEvent.ACTION_DOWN)
{
GeoPoint pGoal = mapView.getProjection().fromPixels(
(int) event.getX(),
(int) event.getY());
DisplayInfoMessage("The screen has been touched!" + event.getX() + " AND " + event.getY() + "Latitude: "+ pGoal.getLatitudeE6()); // only for displaying test popup
}
super.onTouchEvent(event);
return true;
}
但是它并不做我想要的事情。任何帮助或提示都将不胜感激!