Transform specific segment in segmented control

Question

Is there a way to transform the content of a specific segment contained in segmented control? (I have to rotate it by 180deg)

Not the image contained in it, because in my case there isn't one (I have used FontAwesome)

Demonstration:

from: to:

Answer 1

Yes there is!

Consider that we have a segmented control contains 3 segments:

Actually, it is a view which contains 3 subviews, typed as UISegment. If we try to print this segmented control subviews (Assuming that we connected it to the desired view controller as segmentedControl IBOutlet):

class ViewController: UIViewController {
    // MARK:- IBOutlets
    @IBOutlet weak var segmentedControl: UISegmentedControl!

    override func viewDidLoad() {
        super.viewDidLoad()

        for view in segmentedControl.subviews {
            print(view)
        }
    }
}

The log should display something similar to:

UISegment: 0x7febebc06980; frame = (229 0; 114 29); layer = CALayer: 0x60000002edc0 UISegment: 0x7febebe140c0; frame = (114 0; 114 29); layer = CALayer: 0x618000231800 UISegment: 0x7febebe14d30; frame = (0 0; 113 29); layer = CALayer: 0x6180002319c0

So, you can access the segments in the segmented control as a UISegment, thus apply needed edit to it as a UIView. For instance, if you want to rotate the second segment, you could implement:

override func viewDidLoad() {
    super.viewDidLoad()

    for view in segmentedControl.subviews[1].subviews {
        print(view)
        view.transform = CGAffineTransform(scaleX: -1, y: 1)
    }
}

As you can see, the segment also has subviews:

UISegmentLabel: 0x7f8b51701770; frame = (0 0; 64 22.5); text = 'Second'; opaque = NO; userInteractionEnabled = NO; layer = _UILabelLayer: 0x610000091530

UIImageView: 0x7f8b51701470; frame = (114 0; 1 1); alpha = 0; opaque = NO; autoresize = LM; userInteractionEnabled = NO; tag = -1030; layer = CALayer: 0x610000031480

So, you should rotate all of these subviews, as implemented in above the code snippet.

The output would be:

The same approach should be applicable with segmented controls that have images instead of titles:

Before rotating:

After rotating:

Answer 2

A segment is a small UIView, you can just apply a transformation to it.

Refer to this question about getting the subview:

UISegmentedControl selected segment color

And refer to this other one to "rotate" the content.

How to rotate UIView using transform

Then again, i'd just be easier to make an image out of it and use that instead.