不可能运行FlutterApp

Question

运行Gradle：无法下载所需的Android SDK 组件，因为尚未接受以下许可证：Android SDK Build-Tools 26.0.2，Android SDK平台27

它建议

要解决此问题，请在终端中运行以下命令： flutter医生-Android-libenses

我遵循指令。不过，我收到相同的错误消息。

运行Gradle：无法下载所需的Android SDK 组件，因为尚未接受以下许可证：Android SDK Build-Tools 26.0.2，Android SDK平台27

我尝试了 -

./sdkmanager --licenses

但没有成功。

问题与local.properties中的SDK路径相关。默认情况下，它指向不同的位置。一旦我将sdk.dir更改为我的Android SDK路径，它就可以了。我现在可以运行该应用程序。

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

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

class GreenSpaceApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Green Space Finder',
      theme: ThemeData(primarySwatch: Colors.green),
      home: GreenSpaceScreen(),
    );
  }
}

class GreenSpaceScreen extends StatefulWidget {
  @override
  _GreenSpaceScreenState createState() => _GreenSpaceScreenState();
}

class _GreenSpaceScreenState extends State<GreenSpaceScreen> {
  late GoogleMapController _mapController;
  LatLng _currentLocation = LatLng(37.7749, -122.4194); // Default: San Francisco
  Set<Marker> _markers = {};

  @override
  void initState() {
    super.initState();
    _getUserLocation();
  }

  Future<void> _getUserLocation() async {
    var status = await Permission.location.request();
    if (status.isGranted) {
      Position position = await Geolocator.getCurrentPosition(
          desiredAccuracy: LocationAccuracy.high);
      setState(() {
        _currentLocation = LatLng(position.latitude, position.longitude);
        _mapController.animateCamera(CameraUpdate.newLatLngZoom(_currentLocation, 14));
        _addGreenSpaces();
      });
    }
  }

  void _addGreenSpaces() {
    setState(() {
      _markers.add(Marker(
        markerId: MarkerId('park1'),
        position: LatLng(_currentLocation.latitude + 0.01, _currentLocation.longitude),
        infoWindow: InfoWindow(title: 'Local Park'),
      ));
      _markers.add(Marker(
        markerId: MarkerId('park2'),
        position: LatLng(_currentLocation.latitude - 0.01, _currentLocation.longitude + 0.01),
        infoWindow: InfoWindow(title: 'Community Garden'),
      ));
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Find Green Spaces')),
      body: GoogleMap(
        initialCameraPosition: CameraPosition(target: _currentLocation, zoom: 12),
        onMapCreated: (controller) => _mapController = controller,
        markers: _markers,
        myLocationEnabled: true,
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _getUserLocation,
        child: Icon(Icons.my_location),
      ),
    );
  }
}

Answer 1