Question

当我尝试在Android 6.0中获取最后一个已知位置时出现错误

Location lastLocation =locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);

错误：

java.lang.SecurityException：“网络”位置提供程序需要 ACCESS_COARSE_LOCATION或ACCESS_FINE_LOCATION权限。

我的清单

 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.WRITE_SETTINGS"/>

检查权限：

LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);

        if (ActivityCompat.checkSelfPermission(context,
                Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
                && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {
            try {
                ActivityCompat.requestPermissions(getActivity(), new String[] {
                                Manifest.permission.ACCESS_FINE_LOCATION,
                                Manifest.permission.ACCESS_COARSE_LOCATION },
                        1);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        PointDTO point = new PointDTO();

        try {
            Location lastLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//            addresses = geocoder.getFromLocation(lat, lon, 1);
//            //        String cityName = addresses.get(0).getAddressLine(0);
//            //        String countryName = addresses.get(0).getAddressLine(2);
//            address= addresses.get(0).getAddressLine(0);
            point.setLat(lastLocation.getLatitude());
            point.setLon(lastLocation.getLongitude());

        } catch (NullPointerException | SecurityException e) {
            e.printStackTrace();
        }

        return point;

我做错了什么？它适用于Android Api 23 -

UPD：

NPE：

 ActivityCompat.requestPermissions(getActivity(), new String[] {
                            Manifest.permission.ACCESS_FINE_LOCATION,
                            Manifest.permission.ACCESS_COARSE_LOCATION },
                    1);

抛出：SecurityException

    LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);

Answer 1

我在执行这些操作时遇到了同样的问题。您应该在授予权限后访问位置

它应该在方法onRequestPermissionsResult()

内

参考请求权限blog

Answer 2

如果为marshmallow（android api 23或更高版本）提供运行时位置权限，你应该做位置工作，检查一下：

这行代码

Location lastLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);

这里将向您显示安全异常代码中的错误，并要求在任何地方使用运行时权限代码代码，不必担心您可以使用此错误信息执行构建。

private void checkRuntimePermissions(){
        if (ActivityCompat.checkSelfPermission(context,
                Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
                && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {
            try {
                ActivityCompat.requestPermissions(getActivity(), new String[] {
                                Manifest.permission.ACCESS_FINE_LOCATION,
                                Manifest.permission.ACCESS_COARSE_LOCATION },
                        1);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }else{
            getMyLocation();
        }
    }

    private PointDTO getMyLocation(){
        PointDTO point = new PointDTO();
        try {
            LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
            Location lastLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//            addresses = geocoder.getFromLocation(lat, lon, 1);
//            //        String cityName = addresses.get(0).getAddressLine(0);
//            //        String countryName = addresses.get(0).getAddressLine(2);
//            address= addresses.get(0).getAddressLine(0);
            point.setLat(lastLocation.getLatitude());
            point.setLon(lastLocation.getLongitude());

        } catch (NullPointerException | SecurityException e) {
            e.printStackTrace();
        }

        return point;
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        switch (requestCode) {
            case REQ_ACCESS_COARSE_LOCATION:
            case REQ_ACCESS_FINE_LOCATION: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    // permission was granted, yay! 
                    checkRuntimePermissions();
                } else {
                    //do other operation because permission not given
                }
                return;
            }
        }
    }

Android 6.0 getLastKnowLocationPermission

2 个答案: