我创建了一个带有“按钮”的 ScrollView 。但是“按钮”目前实际上没有做任何事情。所以,我想知道如何使“按钮”可用。因此,当我按下它们时,它们会将我带到另一个 View Controller 。所有按钮都会将我带到同一个 View Controller ,只是在 View Controller 内具有不同的数据(取决于我希望该按钮代表什么)。到目前为止,这是我的代码:
@IBOutlet weak var categoryScrollView: UIScrollView!
var categoryArr = ["Button1","Button2","Button3","Button4","Button5", "Button 6", "Button 7", "Button 8", "Button 9", "Button 10", "Button 11", "Button 12"]
var buttonColors = [UIColor.greenColor(), UIColor.blueColor(), UIColor.blackColor(), UIColor.cyanColor(), UIColor.magentaColor(), UIColor.greenColor(), UIColor.blueColor(), UIColor.blackColor(), UIColor.cyanColor(), UIColor.magentaColor(), UIColor.blackColor(), UIColor.brownColor()]
let kPadding:CGFloat = 20
override func viewDidLoad() {
super.viewDidLoad()
let buttonSize = CGSizeMake(categoryScrollView.bounds.size.width/2, categoryScrollView.bounds.size.height/2)//hal
let scrollingView = colorButtonsView(buttonSize, buttonCount: 12)
categoryScrollView.contentSize = scrollingView.frame.size
categoryScrollView.addSubview(scrollingView)
categoryScrollView.showsVerticalScrollIndicator = false
categoryScrollView.delegate = self
categoryScrollView.pagingEnabled = true
categoryScrollView.indicatorStyle = .Default
categoryScrollView.contentOffset = CGPointMake(0, 0)
}
func colorButtonsView(buttonSize:CGSize, buttonCount:Int) -> UIView {
let buttonView = UIView()
buttonView.frame.origin = CGPointMake(50,300)
let padding = CGSizeMake(kPadding, kPadding)
buttonView.frame.size.width = (buttonSize.width + padding.width) * CGFloat(buttonCount)
var buttonPosition = CGPointMake(0, padding.height)
let buttonIncrement = buttonSize.width + padding.width
for i in 0...(buttonCount - 1) {
let button = UIButton(type: .Custom)
button.frame.size = buttonSize
button.frame.origin = buttonPosition
buttonPosition.x = buttonPosition.x + buttonIncrement
button.setTitle(categoryArr[i], forState: UIControlState.Normal)
button.backgroundColor = buttonColors[i]
buttonView.addSubview(button)
}
buttonView.backgroundColor = UIColor.redColor()
return buttonView
}
}
extension ViewController:UIScrollViewDelegate{
func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
let index = round(scrollView.contentOffset.x / scrollView.frame.size.width)
print(index)
}
最佳答案
当您创建按钮时,您必须指定一个目标以便对其执行操作(将其添加到您的 for 循环中):
button.addTarget(self, action: "myaction:", forControlEvents: .TouchUpInside)
然后创建对应的方法
func myaction(sender: UIButton!) {
// navigation code here.
}
请注意,您不必创建多个方法来为每个按钮执行不同的操作,您所要做的就是像这样:
button.tag = i
然后在您的操作方法中:
switch sender.tag {
case 0 :
//do some stuff
case 1 :
//do some stuff
}
关于ios - Swift:如何在 ScrollView 中使用按钮,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35193359/