我想以编程方式创建一个基本UIButton。例如，在我的视图控制器中，将在同一行中动态创建五个UIButton，并为某些颜色，字体和大小设置其布局或属性。
我还需要为特定按钮添加动作方法。
答案 0 :(得分：1)
创建uibuttons并在主视图中添加它们，请参阅下面的示例。
class yourClassName: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// here method CGRectMake defines x, y, width, height
var btnOne = UIButton(frame: CGRectMake(0, 0, 50, 50))
var btnOne = UIButton(frame: CGRectMake(0, 0, 50, 50))
self.view.addSubview(btnOne) // add button inside view
self.view.addSubview(btnOne) // add button inside view
// using selector you must specify a method for each button
btnOne.addTarget(self, action: #selector(self.actionOne), forControlEvents: .TouchUpInside)
btnTwo.addTarget(self, action: #selector(self.actionTwo), forControlEvents: .TouchUpInside)
}
操作方法：
func actionOne(sender : UIButton) {
print("button one tapped")
}
func actionTwo(sender : UIButton) {
print("button second tapped")
}
答案 1 :(得分：1)
如果您想以编程方式执行此操作，您可能会按以下方式思考：
在viewDidLoad（）中的for ...循环中创建按钮（或其他地方，具体取决于您的要求）：
let buttonWidth : CGFloat = self.view.frame.width / 10
let buttonHeight : CGFloat = 50
for count in 0..<10 {
let newButton = UIButton(frame: CGRect(origin: CGPoint(x: CGFloat(count) * buttonWidth, y: 50), size: CGSize(width: buttonWidth, height: buttonHeight)))
newButton.backgroundColor = UIColor.red
newButton.setTitle("Button #\(count)", for: UIControlState.normal)
newButton.setTitleColor(UIColor.white, for: UIControlState.normal)
newButton.addTarget(self, action: #selector(self.buttonTapped(sender:)), for: UIControlEvents.touchUpInside)
newButton.titleLabel?.font = UIFont(name: "Arial", size: 10)
newButton.tag = count
self.view.addSubview(newButton)
}
然后你可以按如下方式实现选择器buttonTapped（sender：UIButton），检索按钮的标签，以便你可以定制动作（例如通过switch语句）：
func buttonTapped(sender: UIButton) -> Void {
print("\(sender.tag) was tapped!")
// Do something more interesting based on the tag here...
}
这允许您设置许多按钮操作，而无需很多不同的选择器。希望有所帮助。
答案 2 :(得分：0)
let bacViewOne=UIButton(frame: CGRectMake(20, 60 , 130, 130))
bacViewOne.backgroundColor=UIColor.whiteColor()
bacViewOne.layer.cornerRadius=5.0
btn1 = UIButton(type: UIButtonType.Custom) as UIButton
btn1.setImage(UIImage(named: "new.png"), forState: UIControlState.Normal)
btn1.frame = CGRectMake((bacViewOne.frame.size.width-90)/2, 5 , 90, 90)
//btn1.backgroundColor = UIColor.whiteColor()
btn1.tag = 1
btn1.addTarget(self, action: #selector(ViewController.dashboard(_:)), forControlEvents: UIControlEvents.TouchUpInside)
bacViewOne.addSubview(btn1)
self.view.addSubview(bacViewOne)
let l1 = UILabel(frame: CGRectMake((bacViewOne.frame.size.width-90)/2, 100, 90, 21))
l1.textAlignment = NSTextAlignment.Center
l1.textColor = UIColor(red: 41/255.0, green: 43/255.0, blue: 64/255.0, alpha: 1)
l1.text = "Dashboard"
//l1.font = UIFont (name: "BakerSignetBT-Roman", size: 15)
bacViewOne.addSubview(l1)
l1.font = UIFont.systemFontOfSize(11)
var bacViewT=UIButton(type: UIButtonType.Custom) as UIButton
bacViewT .frame = CGRectMake(20, 240, 130, 130)
bacViewT.backgroundColor=UIColor.whiteColor()
bacViewT.layer.cornerRadius=5.0
btn3 = UIButton(type: UIButtonType.Custom) as UIButton
btn3.setImage(UIImage(named: "Usernew.png"), forState: UIControlState.Normal)
btn3.frame = CGRectMake((bacViewT.frame.size.width-90)/2, 5, 90, 90)
// btn3.backgroundColor = UIColor(red: 41/255.0, green: 43/255.0, blue: 64/255.0, alpha: 1)
btn3.tag = 2
btn3.addTarget(self, action: #selector(ViewController.userExpenses(_:)), forControlEvents: UIControlEvents.TouchUpInside)
bacViewT.addSubview(btn3)
self.view.addSubview(bacViewT)
let l2 = UILabel(frame: CGRectMake((bacViewT.frame.size.width-100)/2, 100, 100, 21))
l2.textAlignment = NSTextAlignment.Center
l2.textColor = UIColor(red: 41/255.0, green: 43/255.0, blue: 64/255.0, alpha: 1)
l2.text = "User Expense"
//l2.font = UIFont (name: "BakerSignetBT-Roman", size: 15)
bacViewT.addSubview(l2)
l2.font = UIFont.systemFontOfSize(11)
//7
let bacViewTh=UIButton(frame: CGRectMake(170, 60, 130, 130))
bacViewTh.backgroundColor=UIColor.whiteColor()
bacViewTh.layer.cornerRadius=5.0
btn7 = UIButton(type: UIButtonType.Custom) as UIButton
btn7.setImage(UIImage(named: "events.png"), forState: UIControlState.Normal)
btn7.frame = CGRectMake((bacViewTh.frame.size.width-90)/2, 5, 90, 90)
btn7.tag = 3
btn7.addTarget(self, action: #selector(ViewController.upcomingEvents(_:)), forControlEvents: UIControlEvents.TouchUpInside)
bacViewTh.addSubview(btn7)
let l3 = UILabel(frame: CGRectMake((bacViewTh.frame.size.width-100)/2, 100, 100, 21))
l3.textAlignment = NSTextAlignment.Center
l3.textColor = UIColor(red: 41/255.0, green: 43/255.0, blue: 64/255.0, alpha: 1)
l3.text = "Upcoming Events"
//l3.font = UIFont (name: "BakerSignetBT-Roman", size: 15)
bacViewTh.addSubview(l3)
l3.font = UIFont.systemFontOfSize(11)
self.view.addSubview(bacViewTh)
//8
let bacViewF=UIButton(frame: CGRectMake(170, 240, 130, 130))
bacViewF.backgroundColor=UIColor.whiteColor()
bacViewF.layer.cornerRadius=5.0
btn9 = UIButton(type: UIButtonType.Custom) as UIButton
btn9.setImage(UIImage(named: "Location.png"), forState: UIControlState.Normal)
btn9.frame = CGRectMake((bacViewF.frame.size.width-90)/2, 5, 90, 90)
btn9.tag = 4
btn9.addTarget(self, action: #selector(ViewController.userLocations(_:)), forControlEvents: UIControlEvents.TouchUpInside)
bacViewF.addSubview(btn9)
self.view.addSubview(bacViewF)
let l4 = UILabel(frame: CGRectMake((bacViewF.frame.size.width-100)/2, 100, 100, 21))
l4.textAlignment = NSTextAlignment.Center
l4.textColor = UIColor(red: 41/255.0, green: 43/255.0, blue: 64/255.0, alpha: 1)
l4.text = "User Locations"
bacViewF.addSubview(l4)
l4.font = UIFont.systemFontOfSize(11)