How to increment numeric value stored in Objective-C string

Question

How can I increment numeric String value?

If it is initially "1", I want to increment it in every applicationDidEnterBackground click

Answer 1

In your case it's weird that you use string for that purpose but you can technically do it like this:

int myInt = [myString intValue];// I assume you need it as an integer.
myString= [NSString stringWithFormat:@"%d",++myInt];

Answer 2

Best option: make it a number instead of a string.

Other option: strValue = [NSString stringWithFormat:@"%d", [strValue integerValue] + 1];