Remove subviews from ScrollView Swift

Question

I use a for-loop to create labels and buttons inside my scrollView. Is it possible to remove all objects indside my scrollView? (I would like to update it with new content)

for peop in personArray{

        scrollView.clearContent ??????


        // Name label
        var label: UILabel = UILabel()
        label.frame = CGRectMake(8, CGFloat(nameHeight), 183, 21)
        label.backgroundColor = UIColor.whiteColor()
        label.textColor =  UIColor(red: 90/255.0, green: 187/255.0, blue: 206/255.0, alpha: 1.0)
        label.textAlignment = NSTextAlignment.Left
        label.font = UIFont (name: "HelveticaNeue-Light", size: 14)
        label.text = " \(peop.getName()) - \(sex)"
        self.scrollView.addSubview(label)


        //Delete button
        var button = UIButton.buttonWithType(UIButtonType.System) as UIButton
        button.tag = playerId
        button.frame = CGRectMake(199, CGFloat(nameHeight), 37, 21)
        button.backgroundColor = colorWheel.colorsArray[7]
        button.setTitle("Slet", forState: UIControlState.Normal)
        button.addTarget(self, action: "delAction:", forControlEvents: UIControlEvents.TouchUpInside)
        button.setTitleColor(UIColor.whiteColor(), forState: UIControlState.Normal)
        self.scrollView.addSubview(button)
        button.titleLabel!.font = UIFont(name: "HelveticaNeue-Light", size: 14)


        scrollHeight = scrollHeight + 29
        nameHeight = nameHeight + 29
        playerId++
    }
    scrollView.contentSize = CGSize(width: 20.0, height: CGFloat(nameHeight))
}

func delAction(sender: UIButton!){
    personArray.removeAtIndex(sender.tag)
    updatePeople()
}

score 28 · Accepted Answer · answered Nov 21 '14 at 15:43

28

Have you tried this ?

let subViews = self.scrollView.subviews
for subview in subViews{
    subview.removeFromSuperview()
}

answered Nov 21 '14 at 15:43

Ali Abbas

4,247
1
22
40

Thanks! :) i was looking for removeFromSuperview()! Works like a charm! – Heinevolder Nov 21 '14 at 15:57
1

This worked for me, if looking to only remove last added subview: `let subViews = self.view.subviews` `subViews.last?.removeFromSuperview()` – Andrej Jun 15 '15 at 22:09

itsji10dra · Answer 2 · 2017-09-29T16:15:44.797

28

One line solution, use

scrollView.subviews.forEach({ $0.removeFromSuperview() })

UPDATED

For removing only specific kind of view, say UIButton use

scrollView.subviews.forEach ({ ($0 as? UIButton)?.removeFromSuperview() })

edited Sep 29 '17 at 16:15

answered Apr 27 '15 at 07:32

itsji10dra

4,603
3
39
59

How could i judge a kind of class (like: UIButton) to delete in this way? – William Hu Jun 17 '15 at 13:17

score 1 · Answer 3 · answered Feb 06 '15 at 08:51

1

You can do this with block approach,

let views: NSArray = scroller.subviews

// 3 - remove all subviews
views.enumerateObjectsUsingBlock {
(object: AnyObject!, idx: Int, stop: UnsafeMutablePointer<ObjCBool>) -> Void in
  object.removeFromSuperview()
}

answered Feb 06 '15 at 08:51

Pawan Rai

3,434
4
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42

Remove subviews from ScrollView Swift

3 Answers3

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