Flutter_google_places null 校验算子

Question

In my Flutter application, I'm trying to implement flutter_google_places

When calling PlacesAutocomplete.show

I get this error:

Null check operator used on a null value" #0
PlacesAutocompleteState.doSearch (package:flutter_google_places/src/flutter_google_places.dart:436:28)

I call it this: kGoogleApiKey is provided as a string.

PlacesAutocomplete.show(
  context: context,
  apiKey: kGoogleApiKey,
  mode: Mode.fullscreen, // Mode.overlay
  language: "en",
  components: [Component(Component.country, "pk")]
).then((value) => print(value))

Using:

flutter_google_places: ^0.3.0
google_maps_webservice: ^0.0.16

In Flutter 3.3.1

Answer 1

According to this github issue , you will need to provide more arguments to your function call. If they are not provided, the function body will still try to access these non-existing values and throw an exception while doing so.

Prediction p = await PlacesAutocomplete.show(
  offset: 0,
  radius: 1000,
  types: [],
  strictbounds: false,
  region: "ar",
  context: context,
  apiKey: kGoogleApiKey,
  mode: Mode.overlay, // Mode.fullscreen
  language: "en",
  components: [Component(Component.country, "pk")]
);