如何在Android 7中获取当前位置？

Question

I'm trying to get current location in android and its OK when i'm using on android M or lower, But when i run my application on android N, location is null and when i want get latitude from it will returns 0. here is my code

 try {

            if (!isGPSEnabled && !isNetworkEnabled) {
             } else {
                this.canGetLocation = true;
                 if (isNetworkEnabled) {
                    locationManager.requestLocationUpdates(
                            LocationManager.NETWORK_PROVIDER,
                            MIN_TIME_BW_UPDATES,
                            MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                    Log.d("Network", "Network");
                    if (locationManager != null) {
                        location = locationManager
                                .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                        if (location != null) {
                            latitude = location.getLatitude();
                            longitude = location.getLongitude();
                        }
                    }
                }
                 if (isGPSEnabled) {
                    if (location == null) {
                        locationManager.requestLocationUpdates(
                                LocationManager.GPS_PROVIDER,
                                MIN_TIME_BW_UPDATES,
                                MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                        Log.d("GPS Enabled", "GPS Enabled");
                        if (locationManager != null) {
                            location = locationManager
                                    .getLastKnownLocation(LocationManager.GPS_PROVIDER);
                            if (location != null) {
                                latitude = location.getLatitude();
                                longitude = location.getLongitude();
                            }
                        }
                    }
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        }

Answer 1

and its OK when i'm using on android M or lower

No, it is not. getLastKnownLocation() frequently returns null , on all versions of Android.

getLastKnownLocation() is an optimization. Use it, but be prepared to rely upon onLocationChanged() for when getLastKnownLocation() returns null or an out-of-date value.

This is covered in the documentation , as well as in books and courses on Android app development.

Answer 2

To get the last known location all your have to do is call

mLocationClient.getLastLocation(); once the location service was connected.

read how to use the new location API

http://developer.android.com/training/location/retrieve-current.html#GetLocation