用户联机和/或驱动程序联机时如何运行代码

Question

IOS正在将请求发送到Android驱动程序...

使用（glomadrian.materialanimatedswitch）MaterialAnimatedSwitch，当我切换到在线状态时，它会很好用。但是，如果交换机处于在线状态，并且说有骑手要求乘车，则什么也不会发生。

location_switch

location_switch.setOnCheckedChangeListener(new MaterialAnimatedSwitch.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(boolean isOnline) {
            if (isOnline) {
                // set connected when switched to on
                getInstance().goOnline();

                iosRiderRequest(); // if runs, intents to acceptance activity

                if (ActivityCompat.checkSelfPermission(DriverHome.this, Manifest.permission.
                        ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat
                        .checkSelfPermission(DriverHome.this, Manifest.permission
                                .ACCESS_COARSE_LOCATION)
                        != PackageManager.PERMISSION_GRANTED) {

                    return;
                }



                buildLocationCallBack();
                buildLocationRequest();

                fusedLocationProviderClient.requestLocationUpdates(mLocationRequest,
                        locationCallback, Looper.myLooper());

                displayLocation();
                Log.e(TAG, "displayLocation1");
                Snackbar.make(mapFragment.getView(), "You are online", Snackbar
                        .LENGTH_SHORT).show();

                btnFindUser.setText("Slide Switch to go OFFLINE");

            } else {
                // set disconnected when switched to off
                onlineDriverRef.removeValue(); // remove 'DriversOnline'
                getInstance().goOffline();
                fusedLocationProviderClient.removeLocationUpdates(locationCallback);
                map.clear();

                // handler.removeCallbacks(drawPathRunnable); // if enabled, causes error
                if (handler != null)
                    handler.removeCallbacks(drawPathRunnable);
                Snackbar.make(mapFragment.getView(), "You are offline", Snackbar
                        .LENGTH_SHORT).show();

                btnFindUser.setText("Slide Switch to go ONLINE");
            }
        }
    });

如果请求是在驾驶员上线之前发出的，并且一旦他/她上线，则驾驶员会看到该请求，但是如果驾驶员正在在线等待请求，并且驾驶员提出了请求，则驾驶员不会看到该请求。驱动程序。

我尝试了此操作，但不起作用（在onCreate中）：

final DatabaseReference rideRequests = FirebaseDatabase.getInstance().getReference("RideRequests");
    rideRequests.addListenerForSingleValueEvent(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            for (DataSnapshot ds : dataSnapshot.getChildren()) {
                riderId = ds.getKey();

                rideRequests.child(riderId).addListenerForSingleValueEvent(new ValueEventListener() {
                    @Override
                    public void onDataChange(DataSnapshot snapshot) {
                        if (snapshot.child("isIOSRider").exists()) {
                            isIOSRider = true;
                            Log.e(TAG, "isIOSRider = " + isIOSRider);
                            iosRiderRequest();
                        }
                    }

                    @Override
                    public void onCancelled(DatabaseError databaseError) {

                    }
                });
            }
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {

        }
    });