Query an image using Parse - swift

Question

I am using parse with Swift and I am trying to bring up and post an image from Parse on to my tableView but I keep receiving in the log
fatal error: unexpectedly found nil while unwrapping an Optional
value
here's my code for querying the image:
import UIKit
import Parse
class HomePage: UITableViewController {
var images = [UIImage]()
var titles = [String]()
var imageFiles = [PFFile]()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
println(PFUser.currentUser())
var query = PFQuery(className:"Post")
//query.whereKey("username", equalTo:followedUser)
query.findObjectsInBackgroundWithBlock {(objects: [AnyObject]?, error: NSError?) -> Void in
if error == nil {
// The find succeeded.
println("Successfully retrieved \(objects!.count) scores.")
// Do something with the found objects
for object in objects! {
// Update - replaced as with as!
self.titles.append(object["Title"] as! String)
// Update - replaced as with as!
self.imageFiles.append(object["imageFile"] as! PFFile)
self.tableView.reloadData()
}
} else {
// Log details of the failure
println(error)
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return titles.count
}
override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return 500
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var myCell:cell = self.tableView.dequeueReusableCellWithIdentifier("myCell") as! cell
myCell.rank.text = "21"
myCell.votes.text = "4012"
myCell.postDescription.text = titles[indexPath.row]
return myCell
}
}
Also I get the one line of code highlighted in green which is this :
self.imageFiles.append(object["imageFile"] as! PFFile)
What am I doing wrong and what can I do to make the the code pull up the image from Parse?
now its no longer giving me the error unwrapped nil but it still shows
self.imageFiles.append(object["imageFile"] as! PFFile)
in green highlighting and the app keeps crashing when i open it.
this is my parse backend in case that might be an issue:

Answer 1

i solved the issue by adding in the ovveride func UITableviewCell
imageFile[indexPath.row].getDataInBackgroundWithBlock { (data, error) -> Void in
if let downloadedImage = UIImage(data: data!) {
myCell.postedImage.image = downloadedImage
}
}
i think this worked because i got rid of the if error == nil and now its working great for me.