无法进行其他活动

Question

I was added buttonNext then I set onClickListener . When the button is clicked and the barcode is the same as in firestore then the Intent to ViewData class, and the problem is when the button is clicked and the barcode is not the same as in firestore, it cannot be intent to AddItems class.

Code:

    collectionReference.whereEqualTo("barCode", scanResult).get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
        @Override
        public void onComplete(@NonNull Task<QuerySnapshot> task) {
            if (task.isSuccessful()) {
                for (QueryDocumentSnapshot queryDocumentSnapshot : task.getResult()) {
                    if (queryDocumentSnapshot.getString("barCode") != null) { // Success intent to ViewData
                        collectionReference.document(queryDocumentSnapshot.getId()).update("productQuantity", FieldValue.increment(1));
                        Intent moveView = new Intent(ScannersActivity.this, ViewData.class);
                        moveView.putExtra("documentID", documentID);
                        startActivity(moveView);
                        finish();
                    } else { // Problem here..
                        Intent moveCode = new Intent(ScannersActivity.this, AddItems.class);
                        moveCode.putExtra("sendDocumentID", documentID);
                        moveCode.putExtra("ScanResult", scanResult);
                        startActivity(moveCode);
                        finish();
                    }
                }
            }
        }
    });

Answer 1

var isBarCodeAvailable = false

    for (queryDocumentSnapshot in task.getResult()) {
        if (queryDocumentSnapshot.getString("barCode") != null) {
            isBarCodeAvailable = true
            break
        } else {
            isBarCodeAvailable = false
            break
        }
    }

    if (isBarCodeAvailable) {
        collectionReference.document(queryDocumentSnapshot.getId())
            .update("productQuantity", FieldValue.increment(1))
        val moveView = Intent(this@ScannersActivity, ViewData::class.java)
        moveView.putExtra("documentID", documentID)
        startActivity(moveView)
        finish()
    } else {
        val moveCode = Intent(this@ScannersActivity, AddItems::class.java)
        moveCode.putExtra("sendDocumentID", documentID)
        moveCode.putExtra("ScanResult", scanResult)
        startActivity(moveCode)
        finish()
    }