Flutter中如何修改Google Maps的移动定位图标？

请帮帮我，我是Flutter新手

GoogleMap(
              padding: EdgeInsets.only(
                top: mapBottomPadding,
              ),
              initialCameraPosition: _kGoogle,
              mapToolbarEnabled: true,
              buildingsEnabled: true,
              myLocationButtonEnabled: true,
              myLocationEnabled: true,
              mapType: MapType.terrain,
              markers: markers,
              trafficEnabled: true,
              // 启用指南针
              compassEnabled: true,
              onMapCreated: onMapcreated,
              zoomControlsEnabled: true,
            ),

我还附上了我的Google Maps代码

内容的提问来源于stack exchange，提问作者Mohammad Faizan