flutter NoSuchMethodError: The getter 'lat' was called on null - flutter

Question

When searching through Google Maps, a function that returns a location is used, and null is called.
The placeDetail class is initialized and used, but I don't know what the problem is.
void _moveCamera() async {
try{
GoogleMapController controller = await _mapController.future;
controller.animateCamera(
CameraUpdate.newLatLng(
LatLng(
placeDetail.lat,
placeDetail.lng)),
);
} catch(e) {
print("error?? -$e");
}
print("noo - ${placeDetail.lat}");
print("noo - ${placeDetail.lng}");
setState(() {
_markers.add(
Marker(
markerId: MarkerId(placeDetail.name),
position: LatLng(placeDetail?.lat, placeDetail.lng),
infoWindow: InfoWindow(
title: placeDetail.name,
snippet: placeDetail.formattedAddress),
));
});
}
json을 받아온 부분은 문제가 없는 걸로 생각됩니다.
formatted_address: 대한민국 서울특별시 은평구 응암동, geometry: {location: {lat: 37.5942526, lng: 126.9185857}, 이렇게 출력이됩니다.
I initialized it here.
void getCurrentPosition() async {
LocationData pos = await location.getLocation();
setState(() {
currentPos = LatLng(
pos.latitude,
pos.longitude,
);
});
placeDetail = PlaceDetail(lng: pos.longitude, lat: pos.latitude);
print('google mapff - ${currentPos.latitude}');
GoogleMapController mapCtrl = await _mapController.future;
mapCtrl.animateCamera(
CameraUpdate.newCameraPosition(
CameraPosition(
target: LatLng(
currentPos.latitude,
currentPos.longitude),
zoom: zoomLevel),
),
);
}

Answer 1

Where have you defined placeDetail ? You have to make sure placeDetail is within the scope of the code being executed.