无法获取用户位置 [英] Couldn't get user location

问题描述

我试图获取用户的位置无论是网络位置或 GPS 位置或两者兼而有之。对于我运行它实现 LocationListener的后台服务。我添加了所有需要的权限在manifest文件还。这里是我的服务

I am trying to get user location either network location or gps location or both. for that i am running a background service which implements LocationListener. i added all the require permissions in the manifest file also. here is my service

public class GetLocation extends Service implements LocationListener {

    LocationManager lm;
    Location networkLocation, gpsLocation;

    @Override
    public void onCreate() {
        super.onCreate();
        lm = (LocationManager) getSystemService(LOCATION_SERVICE);
        if (lm.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
            gpsLocation = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            Toast.makeText(getApplicationContext(), "Getting Location Via GPS",
                    Toast.LENGTH_LONG).show();
        }
        if (lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
            lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0,
                    this);
            networkLocation = lm
                    .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
            Toast.makeText(getApplicationContext(),
                    "Getting location Via Network", Toast.LENGTH_LONG).show();
        }
        if (gpsLocation != null) {
            Toast.makeText(
                    getApplicationContext(),
                    "GPSLOCATION: " + gpsLocation.getLatitude() + " , "
                            + gpsLocation.getLongitude(), Toast.LENGTH_LONG)
                    .show();
        }
        if (networkLocation != null) {
            Toast.makeText(
                    getApplicationContext(),
                    "NETWORKLOCATION: " + networkLocation.getLatitude() + " , "
                            + networkLocation.getLongitude(), Toast.LENGTH_LONG)
                    .show();
        }
        if (gpsLocation == null && networkLocation == null) {
            Toast.makeText(getApplicationContext(),
                    "Couldn't get user location", Toast.LENGTH_LONG).show();
        }

    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        new Thread() {
            public void run() {
                Looper.prepare();

                if (gpsLocation != null) {
                    Log.d("Usman", "GPSLOCATION: " + gpsLocation.getLatitude()
                            + " , " + gpsLocation.getLongitude());
                }
                if (networkLocation != null) {
                    Log.d("Usman",
                            "NETWORKLOCATION: " + networkLocation.getLatitude()
                                    + " , " + networkLocation.getLongitude());
                }
                if (gpsLocation == null && networkLocation == null) {
                    Log.d("Usman", "Couldn't get user lcoation");
                }
                try {
                    Thread.sleep(3000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                Looper.loop();
            }
        }.start();
        return START_STICKY;
    }

    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

    @Override
    public void onLocationChanged(Location location) {
        // do something with this location

        Toast.makeText(
                getApplicationContext(),
                location.getProvider() + " Location Changed:"
                        + location.getLatitude() + " , "
                        + location.getLongitude(), Toast.LENGTH_LONG).show();
    }

    @Override
    public void onProviderDisabled(String arg0) {
        Toast.makeText(getApplicationContext(), arg0 + " Disabled",
                Toast.LENGTH_LONG).show();
    }

    @Override
    public void onProviderEnabled(String provider) {
        Toast.makeText(getApplicationContext(), provider + " Enabled",
                Toast.LENGTH_LONG).show();
    }

    @Override
    public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
    }

}

在的onCreate（）方法，GPS和网络位置为空。 任何机构可以告诉我，我错了。

in onCreate() method, both gps and network locations are null. can any body tell me where am i wrong

推荐答案

正如你所说，你甚至没有得到获取位置通过网络的敬酒。所以你的执行是不会的，如果块中

As you said, you are not even getting toast of "Getting location Via Network". So your execution is not going inside the if block of

if (lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {

}

因此​​，请确保您已检查

So make sure you have checked

谷歌位置服务 - 经过

Google's location services - Checked

在您的设备设置。

设置>定位服务>谷歌的定位服务和访问位置。

Settings > location services > Google's location services and Access Location.

那么你应该从 LocationManager 位置。你的code否则其余看起来不错。

Then you should get location from LocationManager. Else rest of your code looks fine.

希望这有助于。

<一个href="http://stackoverflow.com/questions/10154937/isproviderenabledlocationmanager-network-provider-return-false/15993514#15993514">Reference链接

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