问题描述

我使用 for 循环在我的滚动视图中创建标签和按钮.是否可以删除我的滚动视图内的所有对象?(我想用新内容更新它)

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()
}

推荐答案

你试过了吗?

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

这篇关于从 ScrollView Swift 中删除子视图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！