Flutter中mapbox_gl插件获取当前地图缩放级别异常求助

我在Flutter应用中使用mapbox_gl: ~0.16.0插件，需要在用户移动地图（或移动结束后）获取当前缩放级别，但它总是返回初始缩放级别而非当前值。不过获取当前视口边界时能得到正确坐标。

我的实现代码如下：

View 代码 #

MapboxMap(
  onMapCreated: (mController) {
    // Assign the MapboxMapController instance to mapboxMapController
    mapboxMapController = mController;
    controller.onMapCreated(mController);
  },
  zoomGesturesEnabled: true,
  accessToken:"<MAPBOX ACCESS TOKEN>",
  initialCameraPosition: const CameraPosition(
      target: LatLng(47.5973305239398, -107.06058413659325),
      zoom: 15.0),
  doubleClickZoomEnabled: true,
  onCameraIdle: () {
    controller.getView(mapboxMapController);
  },
  styleString: "mapbox://styles/mapbox/outdoors-v12",
)

Controller 代码 #

Future<void> getView(MapboxMapController mapboxMap) async {
    mapboxMap.getVisibleRegion().then(
      (bounds) async {
        double northeastLat = bounds.northeast.latitude;
        double northeastLng = bounds.northeast.longitude;
        double northwestLat = bounds.northeast.latitude;
        double northwestLng = bounds.southwest.longitude;
        double southeastLat = bounds.southwest.latitude;
        double southeastLng = bounds.northeast.longitude;
        double southwestLat = bounds.southwest.latitude;
        double southwestLng = bounds.southwest.longitude;
        double zoomLevel = mapboxMap.cameraPosition!.zoom;
        print(zoomLevel); // 这里总是打印15.0，即初始缩放级别
      },
    );
  }

多数文档或示例代码都建议使用这种方式，但对我无效！我查阅了Mapbox Maps文档，未找到实现该功能的清晰示例，希望能得到帮助或代码片段，谢谢！

我也尝试过以下写法，依然无效：

mapboxMap.getCameraPosition().zoom;

内容的提问来源于stack exchange，提问作者Spike Spiegel