我的 android 应用程序没有从 firebase 获取数据

Question

嗨，我正在尝试从 Firebase 获取数据，但它没有获取数据。 在我使用的 java 代码下面：

package com.example.cashiya;




@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_dashboard);
    drawerLayout = findViewById(R.id.drawerlayout);
    navigationView = findViewById(R.id.drawer);
    dalyCheckCard = findViewById(R.id.dailycheckcard);
    luckyCard = findViewById(R.id.luckyspincard);
    taskCard = findViewById(R.id.taskcard);
    redeemCard = findViewById(R.id.redeemcard);
    watchCard = findViewById(R.id.watchcard);
    aboutCard = findViewById(R.id.aboutcard);
    referCard = findViewById(R.id.referalcard);
    profileImage = findViewById(R.id.profileImg);
    coinsTv = findViewById(R.id.coinTv);
    toolbar = findViewById(R.id.toolBar);
    nameTv = findViewById(R.id.nameTV);
    emailTv = findViewById(R.id.emailTV);
    setSupportActionBar(toolbar);
    FirebaseAuth auth = FirebaseAuth.getInstance();
    user = auth.getCurrentUser();
    reference = FirebaseDatabase.getInstance().getReference().child("users");
    getDataFromDatabase();


    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            DashboardActivity.this, drawerLayout, toolbar,
            R.string.opendrawer, R.string.closedrawer);
    drawerLayout.addDrawerListener(toggle);
    toggle.syncState();

    navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(MenuItem item) {
            int id = item.getItemId();

            if (id==R.id.dailycheckcard){
                Toast.makeText(DashboardActivity.this, "Yar sabar karo hale kam ho reya", Toast.LENGTH_SHORT).show();
            }
            else if (id==R.id.luckyspincard){
                Toast.makeText(DashboardActivity.this, "Yar sabar karo hale kam ho reya", Toast.LENGTH_SHORT).show();
            }
            else if (id==R.id.taskcard){
                Toast.makeText(DashboardActivity.this, "Yar sabar karo hale kam ho reya", Toast.LENGTH_SHORT).show();
            }
            else if (id==R.id.referalcard){
                Toast.makeText(DashboardActivity.this, "Yar sabar karo hale kam ho reya", Toast.LENGTH_SHORT).show();
            }
            else if (id==R.id.aboutcard){
                Toast.makeText(DashboardActivity.this, "Yar sabar karo hale kam ho reya", Toast.LENGTH_SHORT).show();
            }
            else if (id==R.id.watchcard){
                Toast.makeText(DashboardActivity.this, "Yar sabar karo hale kam ho reya", Toast.LENGTH_SHORT).show();
            }
            else {
                Toast.makeText(DashboardActivity.this, "Sabar te hai hi nai", Toast.LENGTH_SHORT).show();
            }




            return true;
        }
    });

}

private void getDataFromDatabase(){
    reference.child(user.getUid()).addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot snapshot) {
            ProfileModel model = snapshot.getValue(ProfileModel.class);
            nameTv.setText(model.getName());
            emailTv.setText(model.getEmail());
            coinsTv.setText(String.valueOf(model.getCoins()));
            Glide.with(getApplicationContext())
                    .load(model.getImage())
                    .timeout(6000)
                    .placeholder(R.drawable.ic_profile)
                    .into(profileImage);




        }

        @Override
        public void onCancelled(DatabaseError error) {
            Toast.makeText(DashboardActivity.this, "Error: " +
                    error.getMessage(), Toast.LENGTH_SHORT).show();
            finish();

        }
    });
}

}

它工作正常但是当我添加导航栏然后它停止获取我只是试图从 firebase 获取用户名和电子邮件。应用程序没有崩溃，只是没有从 firebase 获取数据。