Swift | DynamicTableView - Trigger Action with ImageView - ios

Question

I have a DynamicTableView and every Cell has an ImageView. How do I make an Action with knowing the indexPath.row?
The only way I know is to make a TapGestureRecognizer – that works but I then don't know which row I clicked.
So I need something like DidSelectRowAt from the TableView:
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {}
This Action should only happen when I press the ImageView not the whole Row, therefore I can't use DidSelectRowAt from the TableView.
Thats what I did right now:
class DownloadsViewController: UITableViewController {
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let tap = UITapGestureRecognizer(target: self, action: #selector(DownloadsViewController.tappedMe))
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! DownloadsViewCell
cell.fileInfo.image = UIImage(named: "detail1")
cell.fileInfo.addGestureRecognizer(tap)
cell.fileInfo.isUserInteractionEnabled = true
}
func tappedMe(){
print(arrayDocuments(IndexPath.row))
}
}
My whole DownloadViewContoller Class Code is here
My DownloadViewCell Screenshot is here
Does anyone have an Idea?
Thank you!

Answer 1

Add a property to your cell: var indexPath: IndexPath.
In cellForRowAtIndexPath: do cell.indexPath = indexPath
In your cell subclass add tapGestureRecognizer to UIImageView which triggers method in cell subclass.
Make a delegate protocol for your cell:
protocol YourCellDelegate: class {
func imagePressed(indexPath: IndexPath)
}
Make your ViewController adopt this protocol.
In your cell subclass add property weak var delegate: YourCellDelegate?
In cellForRowAtIndexPath: do cell.delegate = self
In cell tapRecognizer selector call delegate method delegate?.imagePressed(indexPath: indexPath)
In your viewController you'll receive imagePressed method call with indexPath as an argument.

Answer 2

Just set the ImageView like you had before, and then just add a blank Button over it and use the method from the Answer from Ilya V. with the IBAction

Answer 3

Did you try to get cell by
recognizer.view
on tap gesture method and
func indexPath(for cell: UITableViewCell) -> IndexPath?
returns an index path representing the row and section of a given table-view cell.

Answer 4

Here is a solution that uses a custom UIImageView subclass.
Create a subclass of UIImageView - MyImageView (or something else more appropriate)
Create a delegate for the subclass - MyImageViewDelegate
Add a delegate method called myImageViewTapped(imageView: MyImageView)
Override the touchesEnded method to call the delegate method
Add a property in MyImageView called indexPath that stores the index path of the cell that this image view is in.
In your table cells, use MyImageView instead of a regular UIImageView.
Set the delegate of the MyImageView to self i.e the VC.
Set isUserInteractionEnabled to true
In cellForRowAtIndexPath, set the image view's indexPath to the indexPath parameter
Now implement the delegate method and in the method, you will know which image view is tapped by accessing indexPath!

Answer 5

You can use property "tag" imageView to save indexPath.row and use it later in the selector
class DownloadsViewController: UITableViewController {
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! DownloadsViewCell
cell.fileInfo.image = UIImage(named: "detail1")
cell.fileInfo.isUserInteractionEnabled = true
let tap = UITapGestureRecognizer(target: self, action: #selector(tappedMe(_ :)))
cell.fileInfo.addGestureRecognizer(tap)
}
#objc func tappedMe(_ sender: AnyObject){
print("Tap to imageView in cell No. - \(sender.view.tag)")
}
}