Question

我正在尝试通过GPS或位置提供商获取用户的当前位置，但我尝试的每个解决方案（很多来自stacksoverflow和google，youtube）都给出了经度和纬度的空值。

以下是我正在使用的代码

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

上面的代码总是给出0.0和0.0作为lat和long。

我还在Android Manifest中包含了权限：

getaddrinfo ENOTFOUND localhost
Error: getaddrinfo ENOTFOUND localhost
    at errnoException (dns.js:28:10)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

有什么建议吗？

Answer 1

    public static void getLocation(final Context context, final Looper looper, final LocationUpdateListener locationUpdateListener, final LocationListener locationListener) {


    try {
        boolean isProviderEnabled;
        Location location;
        final LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);

        isProviderEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        if (isProviderEnabled) {
            if (ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
                locationManager.requestSingleUpdate(LocationManager.GPS_PROVIDER, locationListener, looper);
                Handler handler = new Handler();
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
                            locationManager.removeUpdates(locationListener);
                        }
                        getBackupLocation(context, looper, locationUpdateListener, locationListener);
                    }
                }, 10000);

                return;

            }
        }
        isProviderEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
        if (isProviderEnabled) {

            locationManager.requestSingleUpdate(LocationManager.NETWORK_PROVIDER, locationListener, looper);
            return;

        }
        location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
        if (location != null) {
            if (locationUpdateListener != null) {
                locationUpdateListener.onLocationUpdate(location);
                locationManager.removeUpdates(locationListener);
            }
            return;
        }

        location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        if (location != null) {
            if (locationUpdateListener != null) {
                locationUpdateListener.onLocationUpdate(location);
                locationManager.removeUpdates(locationListener);
            }
            return;

        }

        float defaultValue = -10000;
        SharedManager sharedManager = SharedManager.getInstance();
        double lat = sharedManager.getDoubleValue(SharedManager.LAT, defaultValue);
        double lng = sharedManager.getDoubleValue(SharedManager.LNG, defaultValue);

        if (lat != defaultValue && lng != defaultValue) {
            location = new Location(LocationManager.PASSIVE_PROVIDER);
            location.setLatitude(lat);
            location.setLongitude(lng);
            if (locationUpdateListener != null) {
                locationUpdateListener.onLocationUpdate(location);
                locationManager.removeUpdates(locationListener);
            }
            return;
        }
        location = new Location(LocationManager.PASSIVE_PROVIDER);
        location.setLatitude(PASSIVE_LAT);
        location.setLongitude(PASSIVE_LONG);
        if (locationUpdateListener != null) {
            locationUpdateListener.onLocationUpdate(location);
            locationManager.removeUpdates(locationListener);
        }

}
    catch(
Exception e)

    {
        //No Location
        Location location = new Location(LocationManager.PASSIVE_PROVIDER);
        location.setLatitude(PASSIVE_LAT);
        location.setLongitude(PASSIVE_LONG);
        if (locationUpdateListener != null) {
            locationUpdateListener.onLocationUpdate(location);
        }
    }

  }

检查GPS，网络和LastKnownLocation的工作功能.. 我的建议：首先使用LastKnownLocation然后使用Netowrk和最后一个度假村作为GPS ..减去电池使用量。

位置结果返回听众。

Answer 2

这就是我用于项目的全部内容。希望能帮助到你！

声明：

Location location;
    LocationManager locationManager;
    String provider;

的onCreate：

  locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
            provider = locationManager.getBestProvider(new Criteria(), false);

        locationManager.requestLocationUpdates(provider, 400, 1, this);

        location = locationManager.getLastKnownLocation(provider);

        lat = location.getLatitude(); long = location.getLongitude();

如何在不使用谷歌地图android的情况下获得当前的经纬度

2 个答案: