Ndtyjky

I currently have a function which fetches images from firebase based on some preliminary info, at the same tree level as the images is a time stamp value (for each image). I have been unable to get the value, only being able to get to Optional(123131.432432) which is not what I need of course.

Below is the function:

    func fetchAllPostImages() {

    print("fetchAllPostImages function")

    self.ref.child("Posts").child(self.userID).child(self.postNum).child("Images").observe(.childAdded, with: { snapshot in

        var snapshotUrl = snapshot.childSnapshot(forPath: "ImageUrl")

        var timeStampData = snapshot.childSnapshot(forPath: "timeStamp").value



        print("fhdsjaklhfkjdsfksahdjksfjlashfkljdhs")

        print(snapshot.childSnapshot(forPath: "ImageUrl"))

        print(snapshot.childSnapshot(forPath: "timeStamp").value, "timestamp123")

        print(snapshotUrl.value as? [String: String], "value")



            if let urlValue = snapshotUrl.value {

                print("jkdhsjbbvcbcbcbccbbbbbbbbbbbbbbb")

                let snapShotValue = [ "ImageUrl" : urlValue]

                let timeStampVal = ["timeStamp" : timeStampData]



                print(timeStampVal, "dsfaf")

                for (_, value) in snapShotValue {



                    if let imageURL = URL(string: value as! String) {

                        print(imageURL, "image url here")

                        do {

                            let imageAsData = try Data(contentsOf: imageURL)

                            let image = UIImage(data: imageAsData)

                            var timeStamp = 0.0

                            self.arrayOfImgObj.append(Media(image: image!, timeStamp: timeStamp))

                            self.tableView.reloadData()

                            print(self.arrayOfImgObj.count, "array.count")

                        } catch {

                            print("imageURL was not able to be converted into data")

                        }

                    }

                }

        }

    })

}

So I was able to do the following and this seems to work however in the tableView I see teh same Optional(5421432.43214) as before. Even though when I print it it comes out as teh double value I needed.

for (value, timeValue) in zip(snapShotValue.values, timeStampVal) {

    if let imageURL = URL(string: value as! String) {

        print(imageURL, "image url here")

        do {

            let imageAsData = try Data(contentsOf: imageURL)

            let image = UIImage(data: imageAsData)

            var timeStampValue = timeValue as! Double

            print(timeStampValue, "fgsdfg")

            let timeStamp: Double = timeStampValue

            self.arrayOfImgObj.append(Media(image: image!, timeStamp: timeStamp))

            self.tableView.reloadData()

            print(self.arrayOfImgObj.count, "array.count")

        } catch {

            print("imageURL was not able to be converted into data")

        }

    }

}

How to convert timeStamp value wrapped in an optional into a double?

Basically, the easiest way to do this to add an Int to where you call the arrayOfImg[indexPath.row].timeStamp. So it should look like this:

let timeStamp = "(Int(arrayOfImg[indexPath.row].timeStamp))"

Try replacing

let timeStamp: Double = timeStampValue

with

guard let timeStamp = timeStampValue as Double else { return }

This will safely unwrap your optional as well as cast the value as a Double.