anyone know or can provide some example code relating to "timeIntervalSinceNow" method...
I need something like... time2(when app eneters foreground) - time1(when app enters background) = time3(the difference in times)... this is so i can use this number(pref in seconds) to calculate the time i have lost while the app has been in background !!
I am having trying trying to create the date objects, receive the object and display/use in a label....
Actually, to answer your original question, myles, you can use timeIntervalSinceNow
.
In the statement below, inputDate
has been initialized as an NSDate
and set to some date (you could just try [NSDate *inputDate = [NSDate date];
to set the date at the current date and time.
NSTimeInterval timeToAlert =[inputDate timeIntervalSinceNow];
The next line is a way to put that NSTimeInterval
into a string.
NSMutableString *timeinterval = [NSMutableString string];
[timeinterval appendFormat:@"%f",timeToAlert];
Finally, the app delegate class is typically where code can be written to handle coming in and out of background. Good luck!