"fatal error: Array index out of range swift"

Question

The code being:

class Singleton {

    class var sharedInstance:Singleton {
        struct Static {
            static var instance:Singleton? = nil
            static var token:dispatch_once_t = 0
        }
        dispatch_once(&Static.token)
            {
                Static.instance = Singleton ()
        }
        return Static.instance!
    }

    var prayerArray = Array<PrayerSound>()

}

and:

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

        let prayer = PrayerSound(namazName: cellLabel, pathString: filePath!, checked: checked)
        sinleton.prayerArray[cellindex] = prayer

}

what is in your –numberOfSectionsInTableView: and –tableView:numberOfRowsInSection: methods' bodies? — holex
– holex, Commented Oct 2, 2015 at 7:59
the dispatch_once part is not needed at all. This singleton syntax uses dispatch_once automatically behind the scenes. — vadian
– vadian, Commented Oct 2, 2015 at 8:06
You are correct, but the error has nothing to do with the singleton - he's got an empty array. — Grimxn
– Grimxn, Commented Oct 2, 2015 at 8:10

Grimxn · Accepted Answer · 2015-10-02 08:08:37Z

1

You are initialising prayerArray as an empty array with the line var prayerArray = Array<PrayerSound>(). Therefore it has no elements. You have to either initialise it to have a certain length, or append items to it. I think what you want is to do is to initialise it to have enough elements to accept your indices. Something like

var prayerArray = Array<PrayerSound>(count:64, repeatedValue: somePrayer)

Alternatively, you can declare it as an array of optionals, and set them to nil:

var prayerArray = Array<PrayerSound?>(count:64, repeatedValue: nil)

edited Oct 2, 2015 at 8:08

answered Oct 2, 2015 at 8:03

Grimxn

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