Trying to access property from another class Objective-c - ios

Question

I have two classes, Class1 (UIViewController) and Class2 (NSObject). In Class2 I have a property, timerCount, that is increased by 1 every 4th second. I want to set that value to a label in Class1, but it only returns 0. But directly in the Class2 it returns the correct value.
Class2.h
#property (nonatomic) int timerCount;
Class2.m
#synthesize timerCount;
- (void)timerStart {
self.timerCount = 0;
NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:4.0 target:self selector:#selector(timerIncrement) userInfo:nil repeats:YES];
[timer fire];
}
- (void)timerIncrement {
self.timerCount = self.timerCount+1;
Class1 *cls1 = [[Class1 alloc] init];
[cls1 updateTimeLabel];
NSLog(#"%#", [NSString stringWithFormat:#"%i", self.timerCount]); //logs correct numbers
}
Class1.m
- (void)updateTimeLabel {
Class2 *cls2 = [[Class2 alloc] init];
NSLog(#"%#", [NSString stringWithFormat:#"%i", cls2.timerCount]); //logs 0 every 4 second
}
So my question is, what could be wrong?
UPDATE
Class2.m
- (void)completeTransaction:(SKPaymentTransaction *)transaction {
NSLog(#"completeTransaction...");
[self provideContentForProductIdentifier:transaction.payment.productIdentifier];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
//initialize the timer and start it
cls1 = [[Class1 alloc] init];
self.timerCount = 0;
timer = [NSTimer scheduledTimerWithTimeInterval:4.0 target:self selector:#selector(timerIncrement) userInfo:nil repeats:YES];
[timer fire];
}
- (void)timerIncrement {
self.timerCount = self.timerCount-1;
[cls1 updateTimeLeftLabel];
NSLog(#"%#", [NSString stringWithFormat:#"IAP: %i", self.timerCount]);
}
Class1.m
- (void)viewDidLoad {
cls2 = [[Class2 alloc] init];
}
- (void)updateTimeLeftLabel
{
NSLog([NSString stringWithFormat:#"%i", cls2.timerCount]);
}

Answer 1

You're creating a new, temporary Class2 object in your updateTimeLabel method. You should be referencing the original Class2 object that is running the timer.

Answer 2

You should not create each time new instance. That is only reason you are receiving 0. Because each new instance point to new address.
Create only single instance and use it.