How do I have my UISlider
go from 1-100
in increments of 5
?
A slightly more elegant solution in Swift could be something like this
let step: Float = 5
@IBAction func sliderValueChanged(sender: UISlider) {
let roundedValue = round(sender.value / step) * step
sender.value = roundedValue
// Do something else with the value
}
This way you get steps of 5. You can read more about the setup in my post.
Add a target like this:
slider.continuous = YES;
[slider addTarget:self
action:@selector(valueChanged:)
forControlEvents:UIControlEventValueChanged];
And in the valueChanged function set the value to the closest value that is divisible by 5.
[slider setValue:((int)((slider.value + 2.5) / 5) * 5) animated:NO];
So if you need any interval other than 5 simply set it like so:
float interval = 5.0f;//set this
[slider setValue:interval*floorf((slider.value/interval)+0.5f) animated:NO];
There is another way to active the stepper functionality. works in a general case
Example:
range of data is 0 - 2800 and I want the increments to be in 25 unit values. I would do the following
in the example above my slider would be set in IB to range 0 - 112. and my code would be (int)slider.value * 25.
if you then have a text field that can be modified for direct input you would just do the opposite set the slider value to the [textfield.text intValue]/ unitsteps.
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