Slider with real time in Label

Question

I need a slider for displaying real time in slider-label from 12-00 AM to 11-45 PM with step size 15 minutes. But I just have no idea how to do it. Сan anybody give some suggest

Answer 1

If you just need a time chooser with slider, use the following code in the sliderChanged: handler:

- (IBAction)onSliderChange:(id)sender {

    UISlider *slider = (UISlider *)sender;

    NSUInteger numberOfSlots = 24*4 - 1; //total number of 15mins slots

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"h-mm a"];

    NSDate *zeroDate = [dateFormatter dateFromString:@"12-00 AM"];

    NSUInteger actualSlot = roundf(numberOfSlots*slider.value);
    NSTimeInterval slotInterval = actualSlot * 15 * 60;

    NSDate *slotDate = [NSDate dateWithTimeInterval:slotInterval sinceDate:zeroDate];
    [dateFormatter setDateFormat:@"h-mm a"];

    self.timeLabel.text = [dateFormatter stringFromDate:slotDate];
}