BroadcastReceiverのフラグメントのTextViewを更新します。

Question

私のメインフラグメント内のTextViewのテキストを現在のユーザの位置に設定したいと思います。この場所は、FusedLocationApiのサービスで宣言されています。サービスが動作していて、トーストメッセージで位置情報が更新されています。 この場所を設定しようとしましたが、NullPointerExを受信しました。デバッグ後、私はBroadcastReceiverの部分が決して呼び出されないのを見ました。 以下、私が使用するコードを入れます。
MainFragment.java（fusedLocationApiコード除く）MyService.javaの

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    mIntent = new Intent(getContext(), MyService.class); 
    getActivity().startService(mIntent); 
    getActivity().registerReceiver(broadcastReceiver, new IntentFilter(MyService.BROADCAST_ACTION)); 
} 
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
     try { 
      updateUI(intent); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 
}; 
private void updateUI(Intent intent) throws IOException { 
    latitudeString = intent.getStringExtra("latitude"); 
    longitudeString = intent.getStringExtra("longitude"); 
    myTime = intent.getStringExtra("time"); 
} 
@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 

    if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 
     return null; 
    } 
    View view = inflater.inflate(R.layout.fragment_main, null); 

    googleMap = ((SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map)).getMap(); 

    saveAdress = (Button) view.findViewById(R.id.buttonSaveAdress); 
    getBack = (Button) view.findViewById(R.id.buttonGetBack); 

    latitude = Double.parseDouble(latitudeString); //Null pointer here from latitudeString 
    longitude = Double.parseDouble(longitudeString); 
    LatLng latLng = new LatLng(latitude, longitude); 
    googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); 
    googleMap.animateCamera(CameraUpdateFactory.zoomTo(15)); 
    googleMap.setMyLocationEnabled(true); 
...} 

一部

private static final String TAG2 = "MyService"; 
public static final String BROADCAST_ACTION = "package.where.is.myService.displayevent"; 
private final Handler handler = new Handler(); 
Intent intent; 
@Override 
public void onCreate() { 
    super.onCreate(); 
    intent = new Intent(BROADCAST_ACTION); 
    handler.removeCallbacks(sendUpdatesToUI); 
    handler.postDelayed(sendUpdatesToUI, 1000); // 1 second 
} 

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


@Override 
public int onStartCommand(Intent intent, int flags, int startId) { 
    Log.d("LOC", "Service init..."); 
    isEnded = false; 
    mRequestingLocationUpdates = false; 
    mLastUpdateTime = ""; 
    buildGoogleApiClient(); 
    if (mGoogleApiClient.isConnected() && mRequestingLocationUpdates) { 
     startLocationUpdates(); 
    } 
    return Service.START_REDELIVER_INTENT; 
} 


@Override 
public void onConnected(Bundle bundle) { 
    startLocationUpdates(); 
} 

@Override 
public void onDestroy() { 
    super.onDestroy(); 
    stopLocationUpdates(); 
} 
private Runnable sendUpdatesToUI = new Runnable() { 
    public void run() { 
     DisplayLoggingInfo(); 
     handler.postDelayed(this, 5000); // 5 seconds 
    } 
}; 
private void DisplayLoggingInfo() { 
    Log.d(TAG2, "entered DisplayLoggingInfo"); 

    intent.putExtra("latitude", mCurrentLocation.getLatitude()); 
    intent.putExtra("longitude",mCurrentLocation.getLongitude()); 
    intent.putExtra("time", mCurrentLocation.getTime()); 

    Log.d(TAG2, String.valueOf(mCurrentLocation.getLatitude())); 

    //intent.putExtra("counter", String.valueOf(++counter)); 
    sendBroadcast(intent); 
} 

Answer 1

BroadcastReceiverは、ここでは最良の選択肢ではありません -