Swift Cancelling the ActivityViewController causes fatal error - ios

Question

Okay so I got my ActivityViewController to work fine when it is sharing like normal however whenever a user hits cancel after they invoked the ActivityViewController , I get the annoying fatal error.
fatal error: unexpectedly found nil while unwrapping an Optional value
So it looks like I did not unwrap my optionals well. Here's the share method :
#IBAction func share(sender: UIBarButtonItem) {
var memeedimage = generateMemedImage()
let activityViewController = UIActivityViewController(activityItems:[memeedimage] , applicationActivities: nil)
presentViewController(activityViewController, animated: true, completion: nil)
activityViewController.completionWithItemsHandler = {
(activity, success, returneditems, error) in
println("Activity: \(activity) Success: \(success) Items: \(returneditems) Error: \(error)")
self.save()
activityViewController.dismissViewControllerAnimated(true, completion:{
let memevc:MemeTableViewController = MemeTableViewController()
self.presentViewController(memevc, animated: true, completion: nil)
})
}
and the share method calls the save function which generates the object called meme using an implicitly unwrapped optional which causes the error :
func save(){
var meme : MemeObject!
meme = MemeObject(textFieldtop : texfieldtop.text! ,textFieldbottom : textfieldbottom.text! ,image : imagePickerView.image! , memedImage : generateMemedImage())
(UIApplication.sharedApplication().delegate as! AppDelegate).memes.append(meme!)
}
So I decided to safely unwrap the meme optional value but that invoked another problem
func save(){
var meme : MemeObject?
if let memez = meme{
meme = MemeObject(textFieldtop : texfieldtop.text! ,textFieldbottom : textfieldbottom.text! ,image : imagePickerView.image! , memedImage : generateMemedImage())
(UIApplication.sharedApplication().delegate as! AppDelegate).memes.append(meme!)
}
else{
println("Optionals man")
}
}
Now when the the object is not nil , "Optionals man" is printed which shouldn't happen and the completionwithitemshandler property in the share method didn't present the table view controller which should happen directly after the user shares the object.
Code for MemeTableViewController :
import UIKit
class MemeTableViewController : UIViewController,UITableViewDelegate,UITableViewDataSource
{
var memesz: [MemeObject]!
#IBOutlet var tableView: UITableView!
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
memesz = appDelegate.memes
//tableView.reloadData()
}
override func viewDidLoad() {
super.viewDidLoad()
navigationController?.hidesBarsOnSwipe = true
navigationController?.hidesBarsOnTap = true
}
//reserves the number of rows needed to display the image
func tableView(tableView : UITableView, numberOfRowsInSection section : Int)->Int
{
return memesz.count
}
//Reserves the row to be dequeued for display
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell:TableViewzCell = tableView.dequeueReusableCellWithIdentifier("MemesCell", forIndexPath: indexPath) as! TableViewzCell
let memezrow = memesz[indexPath.row]
cell.label1.text = memezrow.textFieldtop
cell.label2.text = memezrow.textFieldbottom
cell.imageview.image = memezrow.memedImage
return cell
}
//Method to do something when the row is selected
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let detailController = self.storyboard!.instantiateViewControllerWithIdentifier("FullScreenMeme") as! FullScreenMeme
detailController.meme = memesz[indexPath.row]
self.navigationController!.pushViewController(detailController, animated: true)
}
}
Any help please?

Answer 1

After looking your code, it seems like you haven't initialised the variable 'meme'.
func save(){
var meme : MemeObject? = MemeObject(textFieldtop : texfieldtop.text! ,textFieldbottom : textfieldbottom.text! ,image : imagePickerView.image! , memedImage : generateMemedImage())
if let memez = meme{
(UIApplication.sharedApplication().delegate as! AppDelegate).memes.append(meme!)
}
else{
println("Optionals man")
}
}
}
#IBAction func share(sender: UIBarButtonItem) {
var memeedimage = generateMemedImage()
let activityViewController = UIActivityViewController(activityItems:[memeedimage] , applicationActivities: nil)
presentViewController(activityViewController, animated: true, completion: nil)
activityViewController.completionWithItemsHandler = {
(activity, success, returneditems, error) in
println("Activity: \(activity) Success: \(success) Items: \(returneditems) Error: \(error)")
self.save()
let memevc = self.storyboard!.instantiateViewControllerWithIdentifier("MemeTableViewConroller") as! MemeTableViewController
self.presentViewController(memevc, animated: true, completion: nil)
}
}