java - Not able to access inner class data from outer class in Android

Question

Here is my code. I am not able to access the username which is in signUp collection. I am getting the value but not accessible from outside.

So please tell me some method to do.

I am also pasting snapshot of my database there are two tables from which I need to access data and display then display in a recycler view. Need to display value in a list format.

Ienter image description here

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


    recyclerView=(RecyclerView)findViewById(R.id.recycler);
    recyclerView.setHasFixedSize(true);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    listItems=new ArrayList<>();
    mAuth = FirebaseAuth.getInstance();

    databaseReference= FirebaseDatabase.getInstance().getReference();
    databaseReference.child("post").addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
            for (DataSnapshot ds : dataSnapshot.getChildren()) {
                post p=ds.getValue(post.class);
                String user=p.getUid();
              final  String nh,nd;
                nh=p.getNewsHeading();
                nd=p.getNewsDiscription();

                databaseReference= FirebaseDatabase.getInstance().getReference();
                databaseReference.child("signUp").child(user).addListenerForSingleValueEvent(new ValueEventListener() {

                    @Override
                    public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                        signUp s=dataSnapshot.getValue(signUp.class);
                        Toast.makeText(MainActivity.this, s.getUser(), Toast.LENGTH_SHORT).show();
//want to access username from outside

                        userName =s.getUser();

                    }

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

                    }

                });

                p=new post(nh,nd,userName);
                listItems.add(p);
            }
            listItems.add(new post("hdfsgidsf","d,hdjh","ramu babu")) ;
            myAdapter adapter;
            adapter=new myAdapter(listItems,getApplicationContext());
            recyclerView.setAdapter(adapter);


        }

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

        }
    });



    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

    setSupportActionBar(toolbar);



    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    //******************************************************************************************************

}

Answer 1

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