如何使用Android Studio在Google Map的Firebase中使用Spinner中的getItemAtPosition

Question

我需要帮助。在这里，我已将医院名称从Firebase加载到微调框，如何获取getItemAtposition，因为当我单击医院名称时，它必须被选中并单击我的应用程序中的getDirection按钮，这样它将重新加载到google地图上并在特定的医院上标记选择，所以现在如何在我的Java代码中可以做，但是我知道缺少一些东西却找不到我，请帮帮我在此先感谢

Java code 

//init Db
        hospitalRef = FirebaseDatabase.getInstance().getReference("hospital");
        //init interface
        iFirebaseLoaddone = this;

        hospitalRef.addListenerForSingleValueEvent(new ValueEventListener() {

            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {

                List<Hospital> hospital = new ArrayList<>();
                for (DataSnapshot hospitalsnapshot : dataSnapshot.getChildren()) {
                    hospital.add(hospitalsnapshot.getValue(Hospital.class));
                }
                iFirebaseLoaddone.onFirebaseLoadSuccess(hospital);

            }
            @Override
            public void onCancelled(DatabaseError databaseError) {
                iFirebaseLoaddone.onFirebaseLoadFailed(databaseError.getMessage());
            }
        });

        searchableSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

                String seleceted =parent.getItemAtPosition(position).toString();
                Log.e("clicked",""+ seleceted);


                hospitalRef.addChildEventListener(new ChildEventListener() {

                    @Override
                    public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
                        setMarker(dataSnapshot);

                      //  Comment comment = dataSnapshot.getValue(Comment.class);

                    }

                    @Override
                    public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
                        setMarker(dataSnapshot);

                    }

                    @Override
                    public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {

                    }

                    @Override
                    public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

                    }

                    @Override
                    public void onCancelled(@NonNull DatabaseError databaseError) {

                    }


                });
            }
            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });

 @Override
    public void onFirebaseLoadSuccess(List<Hospital> hospitalList) {

        hospitals = hospitalList;

        //get all data
        List<String> id = new ArrayList<>();
        List<String> name_list = new ArrayList<>();
        List<Double> latitude = new ArrayList<>();
        List<Double> longitude = new ArrayList<>();
        for (Hospital hospital : hospitalList)
            // id.add(hospital.getId());
            name_list.add(hospital.getName());


        ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, name_list);
        searchableSpinner.setAdapter(adapter);

    }