ios 按钮点击时的 UIDatePicker
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UIDatePicker on button tap
提问by giuse
So far I've only found date-picker bound to UITextField, but I need a date-picker which opens on UIButtontap in the same way as it does with the UITextField.
到目前为止，我只发现日期选择器绑定到UITextField，但我需要一个日期选择器，UIButton它以与UITextField.
Is it possible? And if so, how? Thanks in advance.
是否可以？如果是这样，如何？提前致谢。
回答by iAnurag
@IBAction func BtnClicked(sender: AnyObject) {
var picker : UIDatePicker = UIDatePicker()
picker.datePickerMode = UIDatePickerMode.Date
picker.addTarget(self, action: "dueDateChanged:", forControlEvents: UIControlEvents.ValueChanged)
var pickerSize : CGSize = picker.sizeThatFits(CGSizeZero)
picker.frame = CGRectMake(0.0, 250, pickerSize.width, 460)
// you probably don't want to set background color as black
// picker.backgroundColor = UIColor.blackColor()
self.view.addSubview(picker)
}
func dueDateChanged(sender:UIDatePicker){
var dateFormatter = NSDateFormatter()
dateFormatter.dateStyle = NSDateFormatterStyle.LongStyle
dateFormatter.timeStyle = NSDateFormatterStyle.NoStyle
self.myLabel.text = dateFormatter.stringFromDate(dueDatePickerView.date)
}
回答by krishan kumar
because i dont have enough reputation to comment , i am posting same answer of @iAnurag in Swift 4
因为我没有足够的声誉来发表评论，所以我在 Swift 4 中发布了与 @iAnurag 相同的答案
@IBAction func UpdateDOBClick(_ sender: UIButton) {
let picker : UIDatePicker = UIDatePicker()
picker.datePickerMode = UIDatePickerMode.date
picker.addTarget(self, action: #selector(dueDateChanged(sender:)), for: UIControlEvents.valueChanged)
let pickerSize : CGSize = picker.sizeThatFits(CGSize.zero)
picker.frame = CGRect(x:0.0, y:250, width:pickerSize.width, height:460)
// you probably don't want to set background color as black
// picker.backgroundColor = UIColor.blackColor()
self.view.addSubview(picker)
}
@objc func dueDateChanged(sender:UIDatePicker){
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .short
dateFormatter.timeStyle = .none
dobButton.setTitle(dateFormatter.string(from: sender.date), for: .normal)
}
回答by Syed Tariq
Here is another approach using .hidden feature of the controls. I use a button that changes the title when touched and hides/shows the date picker.
这是使用控件的 .hidden 功能的另一种方法。我使用一个按钮，在触摸时更改标题并隐藏/显示日期选择器。
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var showDate: UILabel!
@IBOutlet weak var myButtonx: UIButton!
@IBAction func myButton(sender: UIButton) {
if myButtonx.titleLabel?.text != "Done" {
// save the date for your need
showDate.text = "\(myDatePicker.date)"
myDatePicker.hidden = false
myButtonx.setTitle("Done",forState: UIControlState.Normal)
} else {
myDatePicker.hidden = true
myButtonx.setTitle("Pick Date",forState: UIControlState.Normal)
}
}
@IBOutlet weak var myDatePicker: UIDatePicker!
override func viewDidLoad() {
super.viewDidLoad()
myDatePicker.hidden = true
myButtonx.setTitle("Pick Date",forState: UIControlState.Normal)
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
