Question

我正在尝试将图像从一个视图传递到另一个视图，但是当我运行下面的代码时，它会一直进入“输入此处”的位置。我该如何解决这个问题？

@IBOutlet weak var feedImage: UIImageView!

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let myCell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! questionCell

//other code here ...

    myCell.feedImage.tag = indexPath.row
    print(myCell.feedImage.tag)

    let tapGestureRecognizer = UITapGestureRecognizer(target:self, action:Selector("imageTapped:"))
    myCell.feedImage.userInteractionEnabled = true
    myCell.feedImage.addGestureRecognizer(tapGestureRecognizer)
}

func imageTapped(img: AnyObject)
{

    performSegueWithIdentifier("questionToFullScreen", sender: self)
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

    if segue.identifier == "questionToFullScreen" {
        guard let feedImage = sender as? UIImageView else { 
        //ENTERING HERE
        return }
        guard let destinationViewController = segue.destinationViewController as? fullScreenImageViewController else { return }

      //send the image to the next view
      destinationViewController.image = resultsArray[feedImage.tag].imageFile
     }
}

Answer 1

改变＆＃34; img：AnyObject＆＃34; - ＆GT; ＆＃34;点击：UITapGestureRecognizer＆＃34;

更改＆＃34;发件人：自我＆＃34; - ＆GT; ＆＃34;发件人：tap.view＆＃34;

func imageTapped(tap: UITapGestureRecognizer) {

    performSegueWithIdentifier("questionToFullScreen", sender: tap.view)
}

Answer 2

这可能是问题所在：

而不是：

func imageTapped(img: AnyObject)
{

    performSegueWithIdentifier("questionToFullScreen", sender: self)
}

写下这个：

func imageTapped(gesture: UITapGestureRecognizer)
    {

        performSegueWithIdentifier("questionToFullScreen", sender: self)
    }

Answer 3

您没有发送UIImage作为发件人。您正在发送tapGestureRecognizer。

func imageTapped(img: AnyObject)
{
    performSegueWithIdentifier("questionToFullScreen", sender: self)
}

sender现在是UITapGestureRecognizer。您无法使用发件人参数发送UIImage。

self表示触发您的操作的人。在您的情况下，它是tapGestureRecognizer.

无法让UIImageView成为prepareForSegue中的发件人

3 个答案: