Geolocator插件获取当前位置

时间:2019-04-11 08:33:12

标签: google-maps dart flutter

我正在使用Geolocator插件来获取设备的当前位置,并使用google map插件来将地图小部件集成到Flutter中

谷歌地图工作正常,但是Geolocator却给我这个错误:

D/permissions_handler(10148): No permissions found in manifest for: $permission
D/permissions_handler(10148): No permissions found in manifest for: $permission

错误仍然出现,为什么会这样?

在文件Androidmanifest.xml中,我在

中添加了这些权限
<manifest>:
  <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

2 个答案:

答案 0 :(得分:1)

问题是google_maps_flutter软件包需要访问您位置的权限,但该软件包没有本机代码来请求该权限。

因此,您需要编写本机代码或仅安装另一个能够获得该许可权的软件包。

安装此软件:https://pub.dartlang.org/packages/location

然后:

getLocationPermission() async {
    final Location location = new Location();
    try {
      location.requestPermission(); //to lunch location permission popup
    } on PlatformException catch (e) {
      if (e.code == 'PERMISSION_DENIED') {
        print('Permission denied');
      }
    }
  }

或者,如果您需要更多可靠的代码,这是我用于某些项目的代码(带有位置包):

//Show some loading indicator depends on this boolean variable
bool askingPermission = false;

@override
  void initState() {
    this.getLocationPermission();
    super.initState();
  }

  Future<bool> getLocationPermission() async {
    setState(() {
      this.askingPermission = true;
    });
    bool result;
    final Location location = Location();
    try {
      if (await location.hasPermission())
        result = true;
      else {
        result = await location.requestPermission();
      }
      print('getLocationPermission: '
          '${result ? 'Access Allowed' : 'Access Denied'}');
    } catch (log, trace) {
      result = false;
      print('getLocationPermission/log: $log');
      print('getLocationPermission/trace: $trace');
    } finally {
      setState(() {
        this.askingPermission = false;
      });
    }
    return result;
  }

答案 1 :(得分:0)

将此包添加到flutter项目中。 -pubspec.yaml

-依赖性:

  location: ^2.3.4