Question

I am working on an student budget application. And when user add new expense, label which represent sum of all expenses, should update, but it doesn’t.

float currentValue = [self.total floatValue];
self.total = [NSNumber numberWithFloat:(currentValue + amountValue)];
self.label.text = [NSString stringWithFormat:@"Razem: %@", total];

In debuger total has a proper value.

Of course when I type something like this

self.label.text = [NSString stringWithFormat:@"something different"];

label changed his content.

EDIT.

I’ve changed code:

self.label.text = [NSString stringWithFormat:@"Razem: %@", [total stringValue]];

but it updates only once. I’ve recorded this:
YT

Answer 1

The only change you have to make in your code is to replace ‘total’ with ‘[total stringValue]’.

self.label.text = [NSString stringWithFormat:@"Razem: %@", [total stringValue]];

or try by setting label’s text as:

[self.label setText:[NSString stringWithFormat:@"Razem: %@", [total stringValue]]];