UISwitch和UIDatePicker

UISwitch

基本使用

import UIKit

class ViewController: UIViewController {
  
  var mainSwitch:UISwitch!
  
  func switchIsChanged(sender: UISwitch){
    print("Sender is = \(sender)")
    
    if sender.on{
      print("The switch is turned on")
    } else {
      print("The switch is turned off")
    }
  }
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    mainSwitch = UISwitch(frame: CGRect(x: 100, y: 100, width: 0, height: 0))
    view.addSubview(mainSwitch!)

    mainSwitch.addTarget(self,
      action: "switchIsChanged:",
      forControlEvents: .ValueChanged)
  }
}

設置顏色

import UIKit

class ViewController: UIViewController {
  
  var mainSwitch:UISwitch!
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    mainSwitch = UISwitch(frame: CGRect(x: 100, y: 100, width: 0, height: 0))
    
    /* Adjust the off-mode tint color */
    mainSwitch.tintColor = UIColor.redColor()
    /* Adjust the on-mode tint color */
    mainSwitch.onTintColor = UIColor.brownColor()
    /* Also change the knob's tint color */
    mainSwitch.thumbTintColor = UIColor.greenColor()
    
    view.addSubview(mainSwitch)
    
  }
  
}

效果如下：

UIDatePicker

基本使用

import UIKit

class ViewController: UIViewController {
  
  var datePicker: UIDatePicker!
  
  func datePickerDateChanged(datePicker: UIDatePicker){
    print("Selected date = \(datePicker.date)")
  }
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    datePicker = UIDatePicker()
    datePicker.center = view.center
    view.addSubview(datePicker)
    
    datePicker.addTarget(self,
      action: "datePickerDateChanged:",
      forControlEvents: .ValueChanged)
    
  }
  
}

效果如下：

限制選擇範圍

import UIKit

class ViewController: UIViewController {
  
  var datePicker: UIDatePicker!

  override func viewDidLoad() {
    super.viewDidLoad()
    
    datePicker = UIDatePicker()
    datePicker.center = view.center
    view.addSubview(datePicker)
    
    let oneYearTime:NSTimeInterval = 365 * 24 * 60 * 60
    let todayDate = NSDate()
    
    let oneYearFromToday = todayDate.dateByAddingTimeInterval(oneYearTime)
    
    let twoYearsFromToday = todayDate.dateByAddingTimeInterval(2 * oneYearTime)
    
    datePicker.minimumDate = oneYearFromToday
    datePicker.maximumDate = twoYearsFromToday
    
  }
  
}

計時工具

import UIKit

class ViewController: UIViewController {
  
  var datePicker: UIDatePicker!
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    datePicker = UIDatePicker()
    datePicker.center = view.center
    datePicker.datePickerMode = .CountDownTimer
    let twoMinutes = (2 * 60) as NSTimeInterval
    datePicker.countDownDuration = twoMinutes
    view.addSubview(datePicker)
    
  }
  
}

效果如下：