Swift 3 - Image view with Tap Gesture

问题

Im having issues with using a tap gesture that I have put on an image view. The image is currently stored in the Assets as 'ActionLiked' and I have set the image view to this image. It is then rendered into a table view which is dynamic based on JSON (so it repeats for each item I put into a JSON array). I added the tap gesture to print out 'TAPPED' each time I click on it however, it seems to not be working all the time - 7 items currently in the table, the tap gesture will work on 1 then not work on the next 2 then work on the 4th one and repeat that pattern

ITEM 1 - WORK ITEM 2 - NO WORK ITEM 3 - NO WORK ITEM 4 - WORK ITEM 5 - NO WORK ITEM 6 - NO WORK ITEM 7 - WORK

I get an error in my debug console Could not load the "" image referenced from a nib in the bundle with identifier But the image is showing correctly on each one just not recognising the tap gesture?

回答1:

Following code may help you more with Swift 4.

As you said you want to detect image tap on tableview cell please go through this code:

let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(ViewController.cellTappedMethod(_:)))

cell.yourImageView.isUserInteractionEnabled = true
cell.yourImageView.tag = indexPath.row
cell.yourImageView.addGestureRecognizer(tapGestureRecognizer)

And add below method to your ViewController:

@objc func cellTappedMethod(_ sender:AnyObject){
     print("you tap image number: \(sender.view.tag)")
}

回答2:

Please check isUserInteractionEnabled of UIImageView is true

回答3:

I recently had an issue that seems similar to yours. I had a number of images, all of which I wanted to respond in the same way whenever the user tapped them. After some experimenting, it became clear to me that each image had to have its own UITapGestureRecognizer instance. I ended up using code like this, which ensured that every image responded to being tapped:

for imageView in imageViews {
    let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(tapResponse))
    imageView.addGestureRecognizer(tapGestureRecognizer)
    imageView.isUserInteractionEnabled = true
}

回答4:

The idea is that you should create unique gesture recognizer for every UIImageView.

let gestureRecognizerOne = UITapGestureRecognizer(target: self, action: #selector(tap))
firstImageView.addGestureRecognizer(gestureRecognizerOne)

let gestureRecognizerTwo = UITapGestureRecognizer(target: self, action: #selector(tap))
secondImageView.addGestureRecognizer(gestureRecognizerTwo)

But I didn't see your code, so, maybe you should create it in a loop or something like that.

来源：https://stackoverflow.com/questions/42161476/swift-3-image-view-with-tap-gesture

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ios

swift

swift3

gesture