Increment UISlider by 1 in range 1 to 100

Question

I am new to iPhone,

How do I have my UISlider go from 1 to 100 in increments of 1?

    slider = [[UISlider alloc] init];
    [slider addTarget:self action:@selector(sliderChange:) forControlEvents:UIControlEventValueChanged];
    [slider setBackgroundColor:[UIColor clearColor]];
    slider.minimumValue = 1;
    slider.maximumValue = 100;
    slider.continuous = YES;
    slider.value = 0.0;

- (IBAction)sliderChange:(id)sender{
    NSLog(@"slider.value=%f",slider.value);
}

When i slide my log shows...

slider.value = 1.000000
slider.value = 1.123440
slider.value = 1.234550
slider.value = 1.345670
slider.value = 1.567890
.
.
.

I want slider value as 1.0 , 2.0 , 3.0 and so on...

Solution 1

you could try this:

float RoundValue(UISlider * slider) {
  return roundf(slider.value * 2.0) * 1;
}

Solution 2

//Only generate update events on release
slider.continuous = NO;

//Round the value and set the slider
- (IBAction)sliderChange:(id)sender
{
    int rounded = sender.value;  //Casting to an int will truncate, round down
    [sender setValue:rounded animated:NO];

    NSLog(@"%f", sender.value);
}

Solution 3

yourSlider.minimumValue = 1;
yourSlider.maximumValue = 100;
[yourSlider addTarget:self action:@selector(roundValue) forControlEvents:UIControlEventValueChanged];

- (void)roundValue{
    yourSlider.value = round(yourSlider.value);
}

also see this bellow answer helpful toy you,give some idea...

UISlider increments

and also another which may give you some idea..

UISlider with increments of 5

Solution 4

I know i'm late to the party but I've also had to do this recently. Here is how I've done it in swift using XCode 8.3.2:

    @IBAction func sliderValueChanged(_ slider: UISlider) {
    label.text = Int(slider.value)
}

Simples! I know I could have used 'Any' instead of 'UISlider', but I think this makes my intention clearer ;)

Solution 5

change

` NSLog(@"slider.value=%f",slider.value);`

to

 NSLog(@"slider.value=%.f",slider.value); 

if you want one digit then :

 NSLog(@"slider.value=%.0f",slider.value);

but this will give you results like 1.0,1.1,....

View more solutions

Comments

[Kamleshwar]

-(IBAction)valueChanged:(UISlider*)sender { int discreteValue = roundl([sender value]); // Rounds float to an integer [sender setValue:(float)discreteValue]; // Sets your slider to this value }