Setting content mode in UIImageView no longer works in iOS 11

Question

I have this code in order to put an UIImageView in the center of a navigation controller bar and properly scale the image:

override func viewDidAppear(_ animated: Bool) {

    let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 150, height: 28));
    imageView.contentMode = .scaleAspectFit;

    let image = UIImage(named: "image_title.png");
    imageView.image = image;

    self.navigationItem.titleView = imageView;
}

The code works fine in iOS 10, however in iOS 11 the ".scaleAspectFit" property is not considered and the images is not scaled in the UIImageView size.

I tried with some solutions i found:

Setting the frame of the UIImageView after setting the "contentMode" property
Setting imageView.setNeedsLayout()
Setting imageView.setNeedsDisplay()

unfortunately, no one of these solutions works. The "contentMode" property is simply ignored,

Any idea on what the problem could be?

Thank you in advance

may this help you : https://stackoverflow.com/a/44040208/5580393 — Aditya, Sep 25 '17 at 13:08
Hi Shebuka, i tried with some proposed solutions i found: . setting the frame of the image after setting the "contentMode" property . setting imageView.setNeedsLayout() . setting imageView.setNeedsDisplay() no one of these solutions works. The strange thing is that my code works fine in iOS 10... — Andrea Gorrieri, Sep 25 '17 at 13:33
Hi Aditya, thank you for your help, unlikely the proposed solution does not work for me :( — Andrea Gorrieri, Sep 25 '17 at 13:37

score 6 · Accepted Answer · answered Sep 25 '17 at 13:43

6

Works for me such way (using additional UIView)

        let titleView = UIView(frame: CGRect(x: 0, y: 0, width: 120, height: 40))
        let image = UIImageView(image: UIImage(named: "img-logo"))
        image.contentMode = .scaleAspectFit
        image.frame = titleView.bounds
        titleView.addSubview(image)
        viewController.navigationItem.titleView = titleView

answered Sep 25 '17 at 13:43

nerowolfe

4,787
3
20
19

It works! Thank you very much nerowolfe! Any idea of why embedding the UIImageView in a UIView solves the problem? – Andrea Gorrieri Sep 25 '17 at 14:39
Have no idea. I can only suppose that nav bar now behaves other way then usual UIView – nerowolfe Sep 28 '17 at 08:59

score 0 · Answer 2 · answered Nov 27 '17 at 07:14

0

    let imageView = UIImageView(image: UIImage(named: "img-logo"))
    imageView.contentMode = .scaleAspectFit
    navigationItem.titleView = imageView

answered Nov 27 '17 at 07:14

Nilomi Shah

186
7

Setting content mode in UIImageView no longer works in iOS 11

2 Answers2