ios Changing UIScrollView scrollbar color to different colors

Question

How can we change color of UIScrollview\'s scroll indicator to something like blue, green etc.

I know we can change it to white, black. But other then these colors.

Answer 1

in IOS 13

Try this one

func scrollViewDidScroll(_ scrollView: UIScrollView){


        if #available(iOS 13, *) {
            (scrollView.subviews[(scrollView.subviews.count - 1)].subviews[0]).backgroundColor = UIColor.themeColor(1.0) //verticalIndicator
            (scrollView.subviews[(scrollView.subviews.count - 2)].subviews[0]).backgroundColor = UIColor.themeColor(1.0) //horizontalIndicator
        } else {
            if let verticalIndicator: UIImageView = (scrollView.subviews[(scrollView.subviews.count - 1)] as? UIImageView) {
                verticalIndicator.backgroundColor = UIColor.themeColor(1.0)
            }

            if let horizontalIndicator: UIImageView = (scrollView.subviews[(scrollView.subviews.count - 2)] as? UIImageView) {
                horizontalIndicator.backgroundColor = UIColor.themeColor(1.0)
            }
        }
    }

Answer 2

Try this it would certainly help you

    for ( UIView *view in scrollBar.subviews ) {

       if (view.tag == 0 && [view isKindOfClass:UIImageView.class])
       {
        UIImageView *imageView      = (UIImageView *)view;
        imageView.backgroundColor   = [UIColor yellowColor];
       }
    }

Explanation: UIScrollBar is a collection of subviews. Here scrollBar indicator(vertical/horizontal) is the one of the subviews and it's an UIImageView.So if we set custom color to the UIImageView it effects scrollBar Indicator.

Answer 3

I wrote an article about this not so far ago. Unfortunately color of this bars defined by pre-defined images, so if you are going to change the color of bars some extra work will be required. Take a look to following link, you will definitely find an answer here since I tried to solve the same issue.

http://leonov.co/2011/04/uiscrollviews-scrollbars-customization/

Answer 4

Here is what I did in Swift 4, similar to previous answers. In my case I'm recoloring the image to be invisible, set correct corner radius and only execute this process once.

func scrollViewDidScroll(_ scrollView: UIScrollView) {
    let color = UIColor.red
    guard
        let verticalIndicator = scrollView.subviews.last as? UIImageView,
        verticalIndicator.backgroundColor != color,
        verticalIndicator.image?.renderingMode != .alwaysTemplate
    else { return }
    verticalIndicator.layer.masksToBounds = true
    verticalIndicator.layer.cornerRadius = verticalIndicator.frame.width / 2
    verticalIndicator.backgroundColor = color
    verticalIndicator.image = verticalIndicator.image?.withRenderingMode(.alwaysTemplate)
    verticalIndicator.tintColor = .clear
}

Answer 5

Swift 2.0 :

Add UIScrollView Delegate.

func scrollViewDidScroll(scrollView: UIScrollView){
let verticalIndicator: UIImageView = (scrollView.subviews[(scrollView.subviews.count - 1)] as! UIImageView)
verticalIndicator.backgroundColor = UIColor.greenColor()

let horizontalIndicator: UIImageView = (scrollView.subviews[(scrollView.subviews.count - 2)] as! UIImageView)
horizontalIndicator.backgroundColor = UIColor.blueColor()
}