Cannot set the custom class

[emmet-temme]

Hello,

One way of doing this is to add a regular slider. Then in the Identity Inspector set the custom class property to VerticalSlider and hook the slider to an action like any other UISlider.

If I do so in your XCode Project, in the Identity Inspector I can only choose the VerticalUISlider class, but not the VerticalSlider class. How can i set the custom class property to VerticalSlider?

Im using XCode 9.2

Thanks

[tomgradel]

@emmet-temme I needed to change VerticalSlider to subclass UISlider to set the custom class property. After assigning, I could then change it back to subclassing from UIControl.

However, the control is still unusable in my application. I'm getting a "IBDesignable Build Failed" message, and the VerticalSlider class doesn't "take". All the attributes of the slider still appears as a UISlider -- not VerticalSlider. I'm still searching for a solution to this problem. The sample application from GitHub works, so there's some subtle difference between the sample code and mine even though VerticalSlider.swift is identical.

I'm using Xcode 9.2.

[tomgradel]

It turned out that to set the custom class you should not try to subclass a class derived from UISlider despite the author's suggestions. Instead, subclass a view, at which time the VerticalSlider, subclassed from UIControl will appear in the list of potential custom classes. I also needed to exit Xcode and delete DerivedData to eliminate a 'build failed' message.

[pearlpdx]

1. The trackLength is being set before the subviews have resized causing strange results. This also adds support for change in orientation.
2. Needs a way to set the value otherwise it cannot be preset or used in a UICollectionView.
3. As noted above you must use a UIView not a UISlider and it must be the same width as the the thumb, currently 42.

added:

func setValue(value: CGFloat) {
self.value = value
setNeedsDisplay()
}

override func layoutSubviews() {
super.layoutSubviews()
let tempValue = value
trackLength = self.bounds.height - (self.thumbOffset * 2)
self.value = tempValue
setNeedsDisplay()
}