问题
I'm newbie to iOS development and now trying to build a very simple navigation app using Google Maps SDK. So I created a map and centered it to current position of user.
Now I need to implement the following functionality:
- make a fixed marker that always remains in the center in a screen;
- let the user move the map, so the fixed marker will be pointed to desired position.
- to write coordinates of this position in some variable when user taps on marker.
Can someone please advice with some ideas how to achieve this, or with some sample code?
回答1:
For the fixed marker, you can add a small UIButton on top of your map. After the user pans the map and taps your button, you can get the location centered in map
CLLocationCoordinate2D location = mapView.camera.target;
来源：https://stackoverflow.com/questions/21987247/select-a-position-using-draggable-map-and-fixed-marker-in-google-maps-sdk-for-io