How is my array count 0?

Question

I have a UIPickerView. I have a blank array set up until my code parses an XML request. So when it does I want it to populate the array with that data. Below is how I have everything set up.

var pickerData = []

func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return pickerData.count
    }

    func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
        return pickerData[row] as String
    }

func parser(parser: NSXMLParser!, foundCharacters string: String!) {
        if (seperatedSoap == "pickerDataString") {
            if (currentElementName == "name") {
                pickerData = [string]
                println(pickerData)
            }

        }

I obviously didn't paste every bit of code but you should be able to understand what's going on here. Now my console prints this as my pickerData after parsing.

(
    "2x1 on recv-small"
)
(
    "2x1 on ship-small"
)
(
    "3x2 on avs-1"
)
(
    "2.25x2 on photo-large"
)
(
    "2.25x2 on recv-large"
)
(
    "2.25x2 on repair-large"
)
(
    "2x3 on wireless-1"
)
(
    "4x6 on ship-shiplbl"
)
(
    "4x6 on recv-shiplbl"
)
(
    "4x6 on wireless-shiplbl"
)

Which is exactly what I want but it's not showing up in my UIPickerView because apparently it's blank? What am I doing wrong here?

You have to use append to add an element to your array not an equal sign — Leo Dabus, Feb 23 '15 at 06:33
Cross-posting :-) I also mentioned that in my answer, but now I think that the count should be 1 and not 0 finally :-? — qwerty_so, Feb 23 '15 at 06:37
@TomasKilian's answer solves your current problem. But you should also refer this qa: http://stackoverflow.com/a/28217011/3804019 — rintaro, Feb 23 '15 at 06:53

score 0 · Accepted Answer · answered Feb 23 '15 at 06:32

0

First you should use

pickerData.append(string)

since your assignment will always set the array to contain a single (the last) element.

Then you probably need to call reloadComponent

answered Feb 23 '15 at 06:32

qwerty_so

35,448
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Can't believe I forgot about that! It's been awhile haha, you are awesome! I also changed my array to only accept strings. var pickerData = [String]() – Feb 23 '15 at 06:39

score 0 · Answer 2 · answered Feb 23 '15 at 06:41

0

Append arrays addition assignment operator (+=):

pickerData += [string]

See Swift Collection Types

answered Feb 23 '15 at 06:41

Jeremy Hageman

3
1
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How is my array count 0?

2 Answers2