问题
I have a problem with parse and swift and i hope you can help me :)
I'm downloading strings and PFfiles from Parse and want to add it to an array (this works fine).
Then I want to fill a Label with the string array (works fine as well) and an UIImageView with the PFFile array which is also an Image.
But I always get an error:
PFFile is not convertible to "UIImage
But I have no clue how I can convert this PFFile so that I can use it with the UIImage View.
var titles = [String] ()
var fragenImages = [PFFile] ()
@IBOutlet weak var fragenIm: UIImageView!
@IBOutlet weak var fragenFeld: UILabel!
override func viewDidAppear(animated: Bool) {
var query = PFQuery(className:"Post")
query.whereKey("user", notEqualTo: PFUser.currentUser().username)
query.limit = 5
query.findObjectsInBackgroundWithBlock{
(objects: [AnyObject]!, error: NSError!) -> Void in
if error == nil {
for object in objects {
self.titles.append(object["title"] as String)
self.fragenImages.append(object["imageFile"] as PFFile)
}
self.fragenFeld.text = self.titles[0]
self.fragenIm.image = self.fragenImages[0]
}
else {
println(error)
}
}
}
回答1:
Daniel, pictures aren't files, technically they are, but you reference them as Data not PFObjects or PFFiles. So, essentially get the Data of the file and apply as you normally would: You just missed a simple step:
for object in objects {
let userPicture = object["imageFile"] as PFFile
userPicture.getDataInBackgroundWithBlock({ // This is the part your overlooking
(imageData: NSData!, error: NSError!) -> Void in
if (error == nil) {
let image = UIImage(data:imageData)
self.fragenImages.append(image)
}
})
}
来源：https://stackoverflow.com/questions/27595220/downloading-pffile-image-from-parse-append-it-to-array-and-fill-uiimageview-wi