()

()

()

()

(Context ctx,String itembarcode, String itemcategory, String itemname, String itemprice)

()

()

()

()

(String searchtext)

()

()

(String userEmail, String userPassword)

()

()

(View itemView)

()

(Result result)

(Result result)

(Result result)

(View view)

(@NonNull DatabaseError databaseError)

(View view)

(View view)

(View view)

(View v)

(View v)

(View v)

(@NonNull Task<Void> task)

(@NonNull Task<AuthResult> task)

(Bundle savedInstanceState)

(Bundle savedInstanceState)

(Bundle savedInstanceState)

(Bundle savedInstanceState)

(Bundle savedInstanceState)

(Bundle savedInstanceState)

(Bundle savedInstanceState)

(@Nullable Bundle savedInstanceState)

(Bundle savedInstanceState)

(Bundle savedInstanceState)

(Bundle savedInstanceState)

(Bundle savedInstanceState)

(Menu menu)

(Menu menu)

(@NonNull DataSnapshot dataSnapshot)

(MenuItem item)

(MenuItem item)

()

()

()

()

()

()

()

()

(UsersViewHolder viewHolder, Items model,int position)

(scanItemsActivity.UsersViewHolder viewHolder, Items model, int position)

(View view)

()

()