我正在使用 地理位置:'^ 3.0.1' Permission_handler:'^ 3.0.0'
现在,我想获取用户的当前位置,并在用户打开地图时将其显示在地图上。
所以我的代码是:
Future<void> requestPermission() async {
PermissionHandler()
.checkPermissionStatus(PermissionGroup.location)
.then((PermissionStatus permissionStatus) async {
print("Checking Permission " + permissionStatus.toString());
if (permissionStatus == PermissionStatus.granted) {
_getCurrentLocation();
} else {
print("Asking Permission " + permissionStatus.toString());
final List<PermissionGroup> permissions = <PermissionGroup>[
PermissionGroup.locationWhenInUse
];
final Map<PermissionGroup, PermissionStatus> permissionRequestResult =
await PermissionHandler().requestPermissions(permissions);
if (PermissionStatus.granted ==
permissionRequestResult[PermissionGroup.locationWhenInUse]) {
print("Permission Granted " + permissionStatus.toString());
_getCurrentLocation();
}
}
});
}
和权限在android的清单中定义,在IOS的info.list中定义。
现在的问题是,当我运行此函数并调用requestPermission
函数时,它会显示弹出窗口,要求获得许可,并且
当我的allow the permission
应用因错误而崩溃时:
java.lang.RuntimeException: Failure delivering result ResultInfo{who=@android:requestPermissions: ... java.lang.IllegalStateException: Reply already submitted
,虽然我在应用程序设置中允许了该许可,但许可的结果还是Permission.disabled
,并且在许可中它表明该位置是允许的许可。但是我多次尝试打开显示Permission.disabled的应用程序。
,即使我deny
,应用也会因相同的错误而崩溃。
所以我得出的结论是:
如果我allow
或deny
崩溃,是因为它多次请求,即使我允许结果也是Permission.disabled。
视频链接:https://youtu.be/A1DKkw6u4HI
有人可以帮我解决这个问题吗?
Or please tell me how to take the current location map easily
答案 0 :(得分:1)
请告诉我如何轻松获取当前位置图
如果您只需要轻松获取当前位置并且只需要位置许可,则:
您可以将location
插件与flutter一起使用:
在您的pubspec.yml
中:location : ^2.3.0
然后获取当前位置:
导入位置信息包
import 'package:location/location.dart' as locationPackage;
将此添加到您的州
locationPackage.Location _locationService = new locationPackage.Location();
bool _permission = false;
在initState中或需要当前位置时调用此函数
fetchCurrentLocation() async {
await _locationService.changeSettings(
accuracy: locationPackage.LocationAccuracy.HIGH, interval: 1000);
locationPackage.LocationData location;
// Platform messages may fail, so we use a try/catch PlatformException.
try {
bool serviceStatus = await _locationService.serviceEnabled();
print("Service status: $serviceStatus");
if (serviceStatus) {
_permission = await _locationService.requestPermission();
print("Permission: $_permission");
if (_permission) {
location = await _locationService.getLocation();
print("Location: ${location.latitude}");
}
} else {
bool serviceStatusResult = await _locationService.requestService();
print("Service status activated after request: $serviceStatusResult");
if (serviceStatusResult) {
fetchCurrentLocation();
}
}
} on PlatformException catch (e) {
print(e);
if (e.code == 'PERMISSION_DENIED') {
//error = e.message;
} else if (e.code == 'SERVICE_STATUS_ERROR') {
//error = e.message;
}
location = null;
}
}