关于ios：Swift：以编程方式创建具有某些特定字体和大小的UIButton

Swift : Programatically Create a UIButton with Some Specific Font And Size

我想以编程方式创建一个基本的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。

我还需要为一个特定的按钮添加操作方法。

如果您想以编程方式进行，可以按照以下几行进行思考：

在中为…创建按钮…在viewdidLoad()中循环(或其他地方，取决于您的要求)：

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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，您可以按如下方式实现选择按钮tapped(sender:uibutton)，检索按钮的标记，以便您可以定制操作(例如，通过switch语句)：

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func buttonTapped(sender: UIButton) -> Void {
print("\(sender.tag) was tapped!")

// Do something more interesting based on the tag here...
}

这允许您在没有很多不同选择器的情况下设置许多按钮操作。希望有帮助。

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创建uibuttons并将其添加到主视图中，请参见下面的示例。

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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)
}

动作方法：

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func actionOne(sender : UIButton) {
print("button one tapped")
}

func actionTwo(sender : UIButton) {
print("button second tapped")
}

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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)

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