我用“按钮”创建了一个滚动视图。但是“按钮”实际上目前没有做任何事情。所以,我想知道,我如何使“按钮”可用。因此,当我按下它们时,它们会引导我到另一个视图控制器。所有按钮都会引导我到同一个视图控制器,只是在视图控制器内有不同的数据(取决于我想要那个按钮代表什么)。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)
}
}
答案 0 :(得分:2)
创建按钮时,必须指定一个目标才能对其执行操作(在for循环中添加此项):
button.addTarget(self, action: "myaction:", forControlEvents: .TouchUpInside)
然后创建相应的方法
func myaction(sender: UIButton!) {
// navigation code here.
}
请注意,您不必创建多种方法,以便为每个按钮执行不同的操作,您只需要执行以下操作:
button.tag = i
然后在你的行动方法中:
switch sender.tag {
case 0 :
//do some stuff
case 1 :
//do some stuff
}
答案 1 :(得分:0)
您必须向按钮添加目标以触发某些操作方法。就像在创建UIButton时在循环中一样,添加
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Test dynamic ngModel</title>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.29/angular.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.29/angular-sanitize.js"></script>
<script type="text/javascript" src="script.js"></script>
</head>
<body ng-app="myApp">
<div ng-controller="MyCtrl">
<div grid="" grid-config="myGridConfig"></div>
<div>Row 2 selected: {{myGridConfig.rowCollection[1].selected}}</div>
</div>
</body>
</html>
并实现一个方法,如:
button.addTarget(self, action: "pressed:", forControlEvents: .TouchUpInside)