Получение NPE в объекте местоположения в Google Maps

Question

Я пытаюсь получить текущее местоположение в Google maps.But я получаю объект местоположения, как NPE.The код:

public void getcurrentlocation() 
    { 
     locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 
     // Creating a criteria object to retrieve provider 
     Criteria criteria = new Criteria(); 
     // Getting the name of the best provider 
     String provider = locationManager.getBestProvider(criteria, true); 
     // Getting Current Location 
     location = getLocation(); 
    // Getting latitude of the current location 
     current_latitude=location.getLatitude(); 

LogCat:

07-16 10:42:13.335: E/AndroidRuntime(6340): FATAL EXCEPTION: main 
07-16 10:42:13.335: E/AndroidRuntime(6340): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.igloo.storelocater/com.igloo.storelocater.MainActivity}: java.lang.NullPointerException 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at android.os.Handler.dispatchMessage(Handler.java:99) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at android.os.Looper.loop(Looper.java:130) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at android.app.ActivityThread.main(ActivityThread.java:3689) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at java.lang.reflect.Method.invokeNative(Native Method) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at java.lang.reflect.Method.invoke(Method.java:507) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at dalvik.system.NativeStart.main(Native Method) 
07-16 10:42:13.335: E/AndroidRuntime(6340): Caused by: java.lang.NullPointerException 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at com.igloo.storelocater.MainActivity.getcurrentlocation(MainActivity.java:121) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at com.igloo.storelocater.MainActivity.onCreate(MainActivity.java:99) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615) 
07-16 10:42:13.335: E/AndroidRuntime(6340):  ... 11 more 

Получение долготы текущего местоположения:

 current_longitude= location.getLongitude(); 


} 
public Location getLocation() { 
    try { 
     locationManager = (LocationManager)getSystemService(LOCATION_SERVICE); 

     // getting GPS status 
     isGPSEnabled = locationManager 
       .isProviderEnabled(LocationManager.GPS_PROVIDER); 

     // getting network status 
     isNetworkEnabled = locationManager 
       .isProviderEnabled(LocationManager.NETWORK_PROVIDER); 

     if (!isGPSEnabled && !isNetworkEnabled) { 
      // no network provider is enabled 
     } else { 
      this.canGetLocation = true; 
      if (isNetworkEnabled) { 
       locationManager.requestLocationUpdates(
         LocationManager.NETWORK_PROVIDER, 
         100L, 
         1.0f, this); 
       Log.d("Network", "Network Enabled"); 
       if (locationManager != null) { 
        location = locationManager 
          .getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
        if (location != null) { 
         current_latitude = location.getLatitude(); 
         current_longitude = location.getLongitude(); 
        } 
       } 
      } 
      // if GPS Enabled get lat/long using GPS Services 
      if (isGPSEnabled) { 
       if (location == null) { 
        locationManager.requestLocationUpdates(
          LocationManager.GPS_PROVIDER, 
          100L, 
          1.0f, this); 
        Log.d("GPS", "GPS Enabled"); 
        if (locationManager != null) { 
         location = locationManager 
           .getLastKnownLocation(LocationManager.GPS_PROVIDER); 
         if (location != null) { 
          current_latitude = location.getLatitude(); 
          current_longitude = location.getLongitude(); 
         } 
        } 
       } 
      } 
     } 

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

    return location; 
} 

Второй метод я получил его от StackOverflow itself.But стил Я получаю объект местоположения как null. Пожалуйста, помогите.

Answer 1

Используйте если (isGPSEnabled & & isNetworkEnabled), а если (! IsGPSEnabled & &! IsNetworkEnabled)

и вставить вам еще часть внутри него.