问颤振地形器包不返回经度和纬度值

EN

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';

//import 'package:clima/services/location.dart';

class LoadingScreen extends StatefulWidget {
  @override
  _LoadingScreenState createState() => _LoadingScreenState();
}

class _LoadingScreenState extends State<LoadingScreen> {
  @override
  void initState() {
    super.initState();
    print('init state called');
    getLocation();
  }

  double? lat;
  double? long;

  Future<Position> getLocation() async {
    Location location = Location();

    bool serviceEnabled;
    LocationPermission permission;
    print('inside getLoction1');

    // Test if location services are enabled.
    serviceEnabled = await Geolocator.isLocationServiceEnabled();
    if (!serviceEnabled) {
      // Location services are not enabled don't continue
      // accessing the position and request users of the
      // App to enable the location services.
      print('Location services are disabled.');
    }
    print('inside getLoction2');

    permission = await Geolocator.checkPermission();
    if (permission == LocationPermission.denied) {
      permission = await Geolocator.requestPermission();
      if (permission == LocationPermission.denied) {
        // Permissions are denied, next time you could try
        // requesting permissions again (this is also where
        // Android's shouldShowRequestPermissionRationale
        // returned true. According to Android guidelines
        // your App should show an explanatory UI now.
        print('Location permissions are denied');
      }
      print('inside getLoction3');
    }
    print('inside getLoction4');
    if (permission == LocationPermission.deniedForever) {
      // Permissions are denied forever, handle appropriately.
      print(
          'Location permissions are permanently denied, we cannot request permissions.');
    }
    print('inside getLoction5');
    final position = await Geolocator.getCurrentPosition();

    print(position.latitude);

    print(location.longitude);
    print(location.latitude);
    print('inside getLoctio6');
    lat = location.latitude;
    long = location.longitude;
    return position;
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: FutureBuilder<Position>(
          future: getLocation(),
          builder: (context, snapshot) {
            if (snapshot.connectionState == ConnectionState.waiting) {
              return Center(
                child: CircularProgressIndicator(),
              );
            }
            if (snapshot.connectionState == ConnectionState.done) {
              print(snapshot.data!.latitude);
              return Center(
                child: Text(
                    '${snapshot.data!.latitude}${snapshot.data!.longitude}'),
              );
            } else {
              return SizedBox.shrink();
            }
          }),
    );
  }
}

import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';

void main() {
  runApp(ScreenView());
}

class ScreenView extends StatefulWidget {
  double? latitude;
  double? longitude;

  ScreenView({this.latitude, this.longitude});

  void locationHereIs() async {
    await locationServicesStatus();
    await checkLocationPermissions();
    try {
      Position position = await Geolocator.getCurrentPosition(
              desiredAccuracy: LocationAccuracy.low)
          .timeout(Duration(seconds: 28));
      print(position);
    } catch (e) {
      print(e);
    }
  }

  Future<void> checkLocationPermissions() async {
    LocationPermission permission = await Geolocator.requestPermission();
    print('Current Location Permission Status = $permission.');
  }

  void checkLocationSettings() async {
    await Geolocator.openLocationSettings();
  }

  Future<void> locationServicesStatus() async {
    bool isLocationServiceEnabled = await Geolocator.isLocationServiceEnabled();
    print(
        'Currently, the emulator\'s Location Services Status = $isLocationServiceEnabled.');
  }

  @override
  State<ScreenView> createState() => _ScreenViewState();
}

class _ScreenViewState extends State<ScreenView> {
  @override
  void initState() {
    ScreenView().locationHereIs();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Container();
  }
}

import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';

void main() {
  runApp(ScreenView());
}

class ScreenView extends StatefulWidget {
  double? latitude;
  double? longitude;

  ScreenView({this.latitude, this.longitude});

  void lastKnownPosition() async {
    await locationServicesStatus();
    await checkLocationPermissions();
    try {
      Position? position = await Geolocator.getLastKnownPosition();
      print(position);
    } catch (e) {
      print(e);
    }
  }

  void locationHereIs() async {
    await locationServicesStatus();
    await checkLocationPermissions();
    try {
      Position position = await Geolocator.getCurrentPosition(
              desiredAccuracy: LocationAccuracy.low)
          .timeout(Duration(seconds: 28));
      print(position);
    } catch (e) {
      print(e);
    }
  }

  Future<void> checkLocationPermissions() async {
    LocationPermission permission = await Geolocator.requestPermission();
    print('Current Location Permission Status = $permission.');
  }

  void checkLocationSettings() async {
    await Geolocator.openLocationSettings();
  }

  Future<void> locationServicesStatus() async {
    bool isLocationServiceEnabled = await Geolocator.isLocationServiceEnabled();
    print(
        'Currently, the emulator\'s Location Services Status = $isLocationServiceEnabled.');
  }

  @override
  State<ScreenView> createState() => _ScreenViewState();
}

class _ScreenViewState extends State<ScreenView> {
  @override
  void initState() {
    ScreenView().lastKnownPosition();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Container();
  }
}

✓  Built build/app/outputs/flutter-apk/app-debug.apk.
Installing build/app/outputs/flutter-apk/app.apk...
Debug service listening on ws://127.0.0.1:52586/aA04hHZ7dIg=/ws
Syncing files to device sdk gphone64 x86 64...
I/flutter (11353): Currently, the emulator's Location Services Status = true.
D/CompatibilityChangeReporter(11353): Compat change id reported: 78294732; UID 10149; state: ENABLED
I/flutter (11353): Current Location Permission Status = LocationPermission.whileInUse.
I/flutter (11353): Latitude: 37.333333333333336, Longitude: -121.89206891099967