milliseconds timer help plz

[iAppDev]

so I've been working on making a timer and everything is good except one. I can't get the format of how to have it show and function in milliseconds.
currently i have it as seconds.

    //this is the format of the counter
    gamesTimer.text = [NSString stringWithFormat:@"%d", MainInt];
 
    //this is the counter in seconds
MainInt += 1;

how can i have it to show in milliseconds and seconds.

like this
seconds milliseconds
0:00 where each 10 millisecond equals 1 second.

thanks in advance

[Duncan C]

Originally Posted by iAppDev

so I've been working on making a timer and everything is good except one. I can't get the format of how to have it show and function in milliseconds.
currently i have it as seconds.

    //this is the format of the counter
    gamesTimer.text = [NSString stringWithFormat:@"%d", MainInt];
 
    //this is the counter in seconds
MainInt += 1;

how can i have it to show in milliseconds and seconds.

like this
seconds milliseconds
0:00 where each 10 millisecond equals 1 second.

thanks in advance

You can't increment a timer and have it work in milliseconds. NSTimer is only accurate to somewhere around 50 milliseconds.

What you want to do is record the start time for something you want to time, then compare that value to the new time. Something like this:

NSTimeInterval startTime = [NSDate timeIntervalSinceReferenceDate];
//Do something time-consuming

NSTimeInterval elapsed = [NSDate timeIntervalSinceReferenceDate] - startTime;

int seconds = elapsed; //Truncate the integer part.
int milliseconds = floor((elapsed - seconds)* 1000);//Round to the nearest millisecond.

The code above will give you integer seconds and integer milliseconds.

[iAppDev]

I'm sorry Duncan but i can't understand the code. i understand that i can put it into my countup method but how can i combine it with my gameTimer method?

thanks

[Duncan C]

Originally Posted by iAppDev

I'm sorry Duncan but i can't understand the code. i understand that i can put it into my countup method but how can i combine it with my gameTimer method?

thanks

What method contains the code you posted? And how is it being called? What are you trying to time?

Post the whole method that includes that timer int, and also show how you set up the timer that calls it.

BTW, you said every 10 milliseconds equals 1 second. There are 1,000 milliseconds in a second, not 10.

[Objective Zero]

Originally Posted by Duncan C

BTW, you said every 10 milliseconds equals 1 second. There are 1,000 milliseconds in a second, not 10.

I think what he means is that he wants to represent 1 as 100.