空对象引用上的RemoteMessage $ Notification.getBody（）中的错误。Service.MyfirebaseMessaging.onMessageReceived

Question

我有2个应用程序，一个用于驱动程序，一个用于客户，当客户向驱动程序应用程序发送请求时，它被压碎了。 客户成功发送请求，但驾驶员无法接到客户的电话

错误说

 FATAL EXCEPTION: Firebase-MyfirebaseMessaging
    Process: com.ddu.dridedriver, PID: 14586
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.google.firebase.messaging.RemoteMessage$Notification.getBody()' on a null object reference
        at com.ddu.dridedriver.Service.MyfirebaseMessaging.onMessageReceived(MyfirebaseMessaging.java:19)
        at com.google.firebase.messaging.FirebaseMessagingService.zzd(Unknown Source:60)
        at com.google.firebase.iid.zzg.run(Unknown Source:4)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
        at com.google.android.gms.common.util.concurrent.zza.run(Unknown Source:6)
        at java.lang.Thread.run(Thread.java:764)

MyfirebaseMessaging这是我的代码

public class MyfirebaseMessaging extends FirebaseMessagingService {

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {



        //coz it will be sent to firebase with lat and lng form customer application
        LatLng customer_location = new Gson().fromJson(remoteMessage.getNotification().getBody(),LatLng.class);
        Intent intent = new Intent(getBaseContext(),CustomerCall.class);
        intent.putExtra("lat",customer_location.latitude);
        intent.putExtra("lng",customer_location.longitude);

        startActivity(intent);
    }
}

``

在驱动程序项目中找到的我的customerCall类

public class CustomerCall extends AppCompatActivity {
    TextView txtTime,txtAddress,txtDistance;
    MediaPlayer mediaPlayer ;

    IGoogleAPI mService;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_customer_call);


        mService = Common.getGoogleApi();


        txtAddress = (TextView)findViewById(R.id.txtAddress);
        txtDistance = (TextView)findViewById(R.id.txtDistance);
        txtTime = (TextView)findViewById(R.id.txtTime);


        mediaPlayer = mediaPlayer.create(this,R.raw.ringtone);
        mediaPlayer.setLooping(true);
        mediaPlayer.start();

        if (getIntent() != null)
        {

            double lat = getIntent().getDoubleExtra("lat",-1.0);
            double lng = getIntent().getDoubleExtra("lng",-1.0);


            getDirection(lat,lng);

        }

    }

    private void getDirection(double lat,double lng) {

        String requestApi = null;
        try
        {




            requestApi = "https://maps.googleapis.com/maps/api/directions/json?"+
                    "mode=driving&"+
                    "transit_routing_preference=less_driving&"+
                    "origin="+Common.mlastlocation.getLatitude()+","+Common.mlastlocation.getLongitude()+"&"+
                    "destination="+lat+","+lng+"&"+"key="+
                    getResources().getString(R.string.google_direction_api);


            Log.d("D-ride",requestApi);


            mService.getPath(requestApi)
                    .enqueue(new Callback<String>() {
                        @Override
                        public void onResponse(Call<String> call, Response<String> response) {
                            try {


                                JSONObject jsonObject = new JSONObject(response.body().toString());
                                JSONArray routes = jsonObject.getJSONArray("routes");

                                JSONObject object = routes.getJSONObject(0);

                                JSONArray legs = object.getJSONArray("legs");


                                JSONObject legsobject = legs.getJSONObject(0);

                                JSONObject distance = legsobject.getJSONObject("distance");
                                txtDistance.setText(distance.getString("text"));



                                JSONObject time = legsobject.getJSONObject("duration");
                                txtTime.setText(distance.getString("text"));


                                String address = legsobject.getString("end_address");
                                txtAddress.setText(address);


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

                        @Override
                        public void onFailure(Call<String> call, Throwable t) {
                            Toast.makeText(CustomerCall.this,""+t.getMessage(),Toast.LENGTH_SHORT).show();
                        }
                    });