问题
Ok a lot of variables in the title, sorry I couldn't make it any more simpler.
First, I have a custom table cell with descriptions like so
now, when a user taps on the cell itself, it would go to View A, however, there is a UITapGestureRecognizer that is connected to the UIImage at the left, which is connected to a segue that goes to View B.
All is fine, but I need some data that is inside the table view cell that I can pass to View B so it can do some stuff once the view is shown.
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if(segue.identifier == "toViewA") {
}else if( segue.identifier == "toViewBFromThatImage" ){
let viewBVC = ( segue.destinationViewController as! viewBVC )
///////sender is UITapGestureRecognizer
///////somehow want to get indexpath here
viewBVC.selectedIndex = SOMEHOW DIRREVED INDEXPATH
}
}
Perhaps I should just set something as a tag of UIImage or the gesture object when initializing? Or should I avoid trying to do this in prepareForSegue in the first place?
Still new to this so any advice is greatly appreciated.
回答1:
I would suggest that putting the segue inside the table view cell is the wrong place. It belongs in the view controller, with a delegate method invoked on the view controller to perform it.
Declare a protocol in your cell subclass -
protocol MyCustomCellDelegate {
func imageTappedInCell(cell:MyCustomCell)
}
Then declare a delegate property and use it in your gesture recogniser -
class MyCustomCell {
weak var delegate : MyCustomCellDelegate?
...
func imageTapped(recognizer:UIGestureRecognizer) {
if (recognizer.state == .Ended) {
delegate?.imageTapped(self)
}
}
Then in your view controller you can implement the delegate method. In the delegate method you can use the cell to identify the index path
class MyTableViewController: UIViewController,MyCustomCellDelegate {
func imageTapped(cell:MyCustomCell) {
self.performSegueWithIdentifier("toViewBFromThatImage",sender:cell)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if( segue.identifier == "toViewBFromThatImage" ){
let viewBVC = ( segue.destinationViewController as! viewBVC )
let senderCell=sender as! MyCustomCell
viewBVC.selectedIndex = self.tableview.indexPathForCell(senderCell)!
}
}
}
来源：https://stackoverflow.com/questions/33093596/how-to-get-the-indexpath-of-a-custom-table-view-cell-when-an-uiimage-inside-of-i