我有一段简单的代码,main.dart。任何形式的帮助将是非常感激的。我使用的是
geolocator: ^5.1.3
我只是想获取用户的位置。但它显示的是
MissingPluginException(No implementation found for method checkPermissionStatus on channel com.baseflow.flutterlocation_permissions)
'package:fluttersrcwidgetstext.dart':断言失败: 第285行 pos 10: 'data != null'。
我也在我的AndroidManifest中添加了这些行。
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
我的main.dart代码是:
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:geolocator/geolocator.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: HomePage(),
);
}
}
class HomePage extends StatefulWidget {
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
final Geolocator geolocator = Geolocator()..forceAndroidLocationManager;
Position _currentPosition;
String _currentAddress;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Location"),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
if (_currentPosition != null) Text(_currentAddress),
FlatButton(
child: Text("Get location"),
onPressed: () {
_getCurrentLocation();
},
),
],
),
),
);
}
_getCurrentLocation() {
geolocator
.getCurrentPosition(desiredAccuracy: LocationAccuracy.best)
.then((Position position) {
setState(() {
_currentPosition = position;
});
_getAddressFromLatLng();
}).catchError((e) {
print(e);
});
}
_getAddressFromLatLng() async {
try {
List<Placemark> p = await geolocator.placemarkFromCoordinates(
_currentPosition.latitude, _currentPosition.longitude);
Placemark place = p[0];
setState(() {
_currentAddress =
"${place.locality}, ${place.postalCode}, ${place.country}";
});
} catch (e) {
print(e);
}
}
}
你的项目是否在Android X上运行?尝试这样做。
这里有另一个有用的链接。https:/github.comflutterflutterissues14137