CODEWITHSUNDEEP
iosswiftuiviewuiimageviewuitapgesturerecognizer
Roman
Roman

Reputation: 839

Interaction of UIImageView and UITapGestureRecognizer in swift

I have several UIImageViews on my screen and if one of them is tapped, it has to change his color. As I had the same problem with UIView, the solution was:

    func viewTapped(recognizer:UITapGestureRecognizer) {

    viewTouched = recognizer.view as UIView!
    thisCard.backgroundColor = UIColor.orangeColor()

}

But I haven't found the similar action for the image view. Could you help me?

Upvotes: 1

Views: 369

Answers (3)

Zhihui
Zhihui

Reputation: 1

Is UIImageView not working? If not, check userInteractionEnabled.

Set userInteractionEnabled to true.

UIImageView

 public var userInteractionEnabled: Bool // default is NO

Upvotes: 0

Sofeda
Sofeda

Reputation: 1371

Create an extension of image view 

extension UIImage {
    func tintWithColor(color:UIColor)->UIImage {

        UIGraphicsBeginImageContext(self.size)
        let context = UIGraphicsGetCurrentContext()

        // flip the image
        CGContextScaleCTM(context, 1.0, -1.0)
        CGContextTranslateCTM(context, 0.0, -self.size.height)

        // multiply blend mode
        CGContextSetBlendMode(context, .Overlay)

        let rect = CGRectMake(0, 0, self.size.width, self.size.height)
        CGContextClipToMask(context, rect, self.CGImage)
        color.setFill()
        CGContextFillRect(context, rect)

        // create uiimage
        let newImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()

        return newImage

    }
}

Now use like this

yourImageView.image = yourImageView.image!.tintWithColor(UIColor.orangeColor())

Upvotes: 0

Randy
Randy

Reputation: 4535

You can change the tintColor of your UIImageViews :

func imageViewTapped(recognizer:UITapGestureRecognizer) {

    guard let imageView = recognizer.view as? UIImageView
      else { return }
    imageView.tintColor = UIColor.orangeColor()

}

Upvotes: 1

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