CODEWITHSUNDEEP
androidfirebasefirebase-realtime-database
Daisy
Daisy

Reputation: 527

Spinner Does Not Retrieve Any Data from Firebase Database

I want to make a spinner validation where if the user did not select any tuition centre name, it will toast a message. Then I want to fill the spinner with the data from firebase database. As refer in this link. I want to try this in my coding apps. But it didn't retrieve any data from my firebase database. Its been few days, I still can't figure out, can someone please help me....

My firebase database as show image below:-

enter image description here

Spinner coding:-

   DatabaseReference mDatabaseRef = FirebaseDatabase.getInstance().getReference();

    mDatabaseRef.child("Advertisement").child(mAuth.getUid())
            .addValueEventListener(new ValueEventListener()
            {
                @Override
                public void onDataChange(DataSnapshot dataSnapshot)
                {
                    //ArrayList<String> identity = new ArrayList<>();
                    final List<String> identity = new ArrayList<String>();
                    identity.add(0, "Choose Tuition Centre");

                    for (DataSnapshot snapshot : dataSnapshot.getChildren())
                    {
                        Advertisement advertisement = snapshot.getValue(Advertisement.class);
                        identity.add(advertisement.getAdstuitioname());
                    }

                    ArrayAdapter<String> nameAdapter = new ArrayAdapter<String>(RatingActivity.this, android.R.layout.simple_spinner_item, identity);
                    nameAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
                    mName.setAdapter(nameAdapter);
                }

                @Override
                public void onCancelled(DatabaseError databaseError)
                {

                }
            });

    mName.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
    {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
        {
            if(position==0)
            {
                //Toast.makeText(getApplicationContext(),"No Item Selected",Toast.LENGTH_LONG).show();
            }

            else
            {
                Toast.makeText(getApplicationContext(),parent.getItemAtPosition(position) +" Selected",Toast.LENGTH_SHORT).show();
            }
        }

        @Override
        public void onNothingSelected(AdapterView<?> parent)
        {
            // TODO Auto-generated method stub
        }
    });

My apps output interface:-

enter image description here

Upvotes: 0

Views: 200

Answers (1)

Pradeep Deshmukh
Pradeep Deshmukh

Reputation: 764

In your code there are nested ids the actual data is after 2 ids. you need to traverse. Just replace the for loop's code to this code.

 for (DataSnapshot snapshot : dataSnapshot.getChildren()) {
     for (DataSnapshot dataSnapshot1 : snapshot.getChildren()) {
      identity.add(dataSnapshot1.child("adstuitioname").getValue(String.class));
         }
     }

keep rest of as it is.

Upvotes: 1

Related Questions