One UIImagePickerController for multiple ImageVIews

问题

could you please help me with UIImagePickerController

I have 12 ImageViews in 1 ViewController. I need help so that each ImageView could pick different photos from Library. Someone told me to use Tags for them but I can't make it work cause i'm new in Swift.

回答1:

Enable User Interaction Enabled for each UIImageView on a Storyboard.

Add TapGestureRecogniser to each UIImageView. Connect each TapGestureRecogniser with IBAction.

@IBAction func tap(_ sender: UITapGestureRecognizer) {

    currentImageView = sender.view as! UIImageView

    let picker = UIImagePickerController()
    picker.delegate = self
    self.present(picker, animated: true, completion: nil)

}

Define variable to store current UIImageView

private var currentImageView: UIImageView? = nil

Handle image selection and assign the image to currentImageView

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

    let image = info[UIImagePickerController.InfoKey.originalImage]
    currentImageView?.image = image as! UIImage

    self.dismiss(animated: true, completion: nil)
}

回答2:

It's not about the swift. You set up a "tag" number in the Interface builder (or in the code. There is a .tag property on the UIResponder descendants). After that you make a switch in your callback method like

To make it a bit clearer:

let picker: UIImagePicker! = { 
    // setup your image picker here, don't forget to set the proper delegate
}()

var lastSender: AnyObject?
func onTouch(_ sender: AnyObject?) {
    // add checks for the sender here
    lastSender = sender
    present(picker, animated: true, completion: *Your Completion*)
}

Delegate:

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any])

let image = *Get Image From Info* lastSender?.image = image

来源：https://stackoverflow.com/questions/52238869/one-uiimagepickercontroller-for-multiple-imageviews

标签

ios

swift

swift4

uiimagepickercontroller