Swift button image tint

Question

I tried to show map icons in UIAlertController, but when image do not have transparent background I will get fill gray color

   let customView = UIView()
   // customView.translatesAutoresizingMaskIntoConstraints = false
    customView.backgroundColor = .clear

    customView.addConstraint(NSLayoutConstraint(item: customView,
                                                attribute: .height,
                                                relatedBy: .equal,
                                                toItem: nil,
                                                attribute: .notAnAttribute,
                                                multiplier: 1,
                                                constant: 100))


    var marginBtns:CGFloat = 10

    if yandexMap {
        let yandexBtn = UIButton()
        yandexBtn.frame = CGRect(x: marginBtns, y: margin, width: 30, height: 30)
        yandexBtn.setImage(UIImage(named: "yandex")?.withRenderingMode(.alwaysOriginal), for: .normal)
        yandexBtn.sizeToFit()
        yandexBtn.imageView!.layer.cornerRadius = 5
        urlYandexAction = urlYandex
        yandexBtn.addTarget(self, action: #selector(actionYandexBtn), for: .touchUpInside)
        marginBtns += 70
        customView.addSubview(yandexBtn)
        //alert.addAction(alertYandex)
    }
    ...
    let alert = UIAlertController(title: "Open in",
                                  customView: customView,
                                  fallbackMessage: "",
                                  preferredStyle: .actionSheet)
    alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))

    present(alert, animated: true)

but I get

its not original image color, how can I fix that ?

I'm not 100% sure but, this could be related to the bug mentioned in [this answer](https://stackoverflow.com/a/37737212/2180785) — Frakcool, Nov 20 '19 at 17:51
@Frakcool how can I apply answer for this question ? I need transparent tint for image and still default tint for another vc — , Nov 20 '19 at 17:55
Idk, I found that related question and thought it might be useful for you, give it a try and if it works, then we could come up with a workaround — Frakcool, Nov 20 '19 at 17:57

score 1 · Answer 1 · edited Nov 20 '19 at 21:34

1

To make tint color of the button's image, the image should be render as Template :

by coding: yandexBtn.setImage(UIImage(named: "yandex")?.withRenderingMode(.alwaysTemplate), for: .normal)
from the assets folder:

edited Nov 20 '19 at 21:34

Watercayman

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answered Nov 20 '19 at 21:14

Magy Elias

31
4

score 0 · Answer 2 · answered Nov 20 '19 at 17:43

0

try

yandexBtn.setImage(UIImage(named: "yandex")?.withRenderingMode(.alwaysTemplate), for: .normal)

answered Nov 20 '19 at 17:43

OldTimes

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score 0 · Answer 3 · answered Nov 20 '19 at 19:46

0

What I use is

yandexBtn.setImage(UIImage(named: "yandex")?.withRenderingMode(.alwaysOriginal), for: .normal)

answered Nov 20 '19 at 19:46

Sam

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Swift button image tint

3 Answers3