Android Backend for Firebase Connection & Update

    
This  is for a main code for all firebase setup need to be add in code
 
    private FirebaseDatabase database = FirebaseDatabase.getInstance();
    private DatabaseReference mDatabase = database.getInstance().getReference("food_level");

  private DatabaseReference mDatabase1 = database.getInstance().getReference("bubbler");

 //decalre the progressBar 
 

 pb = (ProgressBar) findViewById(R.id.progressBar3);

// Read from the database in rea time        mDatabase.addValueEventListener(new ValueEventListener() {
            @Override            public void onDataChange(DataSnapshot dataSnapshot) {
                // This method is called once with the initial value and again                // whenever data at this location is updated.                value = dataSnapshot.child("current_level").getValue(long.class);
                Log.d(TAG, "Value is: " + value);

          ////get the value in realtime and update the progressbar from that value
                pb.setProgress((int)value);
                //System.out.println("robinroy peter"+value.FoodLevel);
            }

            @Override            public void onCancelled(DatabaseError error) {
                // Failed to read value                Log.w(TAG, "Failed to read value.", error.toException());
            }
        });
    }

 
 ////set the value in firebase databse
 

mDatabase1.setValue(mSwitch.getTextOn().toString());