getting constant totals from a table

General
1

Hi, am using android API. I have a table in the backendless console, name contributions. In that table there is a column for amount. My problem is, when i get the total amount of all the columns, i keeps on changing. Here’s the code

//get the total contribution amount
Backendless.Persistence.of(Contributions.class).find(new AsyncCallback<BackendlessCollection<Contributions>>() {
    @Override
    public void handleResponse(BackendlessCollection<Contributions> contributionsBackendlessCollection) {
        contributions = contributionsBackendlessCollection;
        int cSize = contributions.getData().size();
        //sum up the contributed amount
        for (int i = 0; i < cSize; i++) {
            contributedAmount += contributions.getData().get(i).getContribution_amount();

        }
        balanceAmount = requiredAmount - contributedAmount;
        Log.d("Balance is ;;;; ", "" + balanceAmount);
        actualContributedField.setText(String.valueOf(contributedAmount));
        balanceField.setText(String.valueOf(balanceAmount));
        Log.d("Size of data", String.valueOf(cSize) + " Total is " + contributedAmount);
    }

    @Override
    public void handleFault(BackendlessFault backendlessFault) {
        Toast.makeText(SummaryActivity.this, backendlessFault.getMessage(), Toast.LENGTH_SHORT).show();

    }
});

the amount keeps on changing whenever i refresh that. How can i make the pulled amount not to change?? Because its supposed to be constant amount from the saved data.

2

Unless there are new data objects in the Contributions table, the API will return the same data set every time. If you get different results, you need to check with a debugger where the difference comes from. I cannot think of any reason other than the returned data set is different every time (new objects are being created)