slider increment automatically in time period

Question

I am trying to use the current time in my movie player to increment a sliders value in my iPad app.

slider.maximumValue=10;
slider.minimumValue=0;

How can I increment slider.value from 0 to 10 in a specific time period?

Answer 1

You can use an NSTimer to repeatedly add 1 to your slider value if you know the specific time period beforehand:

NSTimer *aTimer = [NSTimer scheduledTimerWithTimeInterval:(timePeriod/slider.maximumValue)
target:self selector:@selector(timerFired:) userInfo:nil repeats:YES];

- (void)timerFired:(NSTimer*)theTimer {
    [slider setValue:slider.value + 1.0];
    if(slider.value == slider.maximumValue) {
        [theTimer invalidate];
    }
}