class DatePickerViewController: UIViewController {
varbackDate: ((Date) ->Void)?
///获取当前日期
privatevarcurrentDateCom:DateComponents=Calendar.current.dateComponents([.year, .month, .day], from:Date()) //日期类型
varcontainV:UIView= {
// let view = UIView(frame: CGRect(x: 0, y: ScreenInfo.Height-240, width: ScreenInfo.Width, height: 240))
letview =UIView(frame:CGRect(x:0, y:240, width:ScreenInfo.Width, height:340))
view.backgroundColor = UIColor.white
returnview
}()
var backgroundView:UIView = {
letview =UIView()
view.backgroundColor=UIColor(red:0, green:0, blue:0, alpha:0.4)
returnview
}()
var picker: UIPickerView!
overrideinit(nibName nibNameOrNil:String?, bundle nibBundleOrNil:Bundle?) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
}
requiredinit?(coder aDecoder:NSCoder) {
fatalError("init(coder:) has not been implemented")
}
//MARK: - 生命周期
override func viewDidLoad() {
super.viewDidLoad()
drawMyView()
}
//MARK: - Func
private func drawMyView(){
self.view.backgroundColor = UIColor.clear
self.view.insertSubview(self.backgroundView, at:0)
self.modalPresentationStyle = .custom//viewcontroller弹出后之前控制器页面不隐藏 .custom代表自定义
letcancel =UIButton(frame:CGRect(x:0, y:10, width:70, height:20))
letsure =UIButton(frame:CGRect(x:ScreenInfo.Width-80, y:10, width:70, height:20))
cancel.setTitle("取消", for: .normal)
sure.setTitle("确认", for: .normal)
cancel.setTitleColor(UIColor.colorWithRGBA(r:255, g:51, b:102, a:1), for: .normal)
sure.setTitleColor(UIColor.colorWithRGBA(r:255, g:51, b:102, a:1), for: .normal)
cancel.addTarget(self, action:#selector(self.onClickCancel), for: .touchUpInside)
sure.addTarget(self, action:#selector(self.onClickSure), for: .touchUpInside)
picker=UIPickerView(frame:CGRect(x:0, y:24, width:ScreenInfo.Width, height:216))
picker.delegate=self
picker.dataSource=self
picker.backgroundColor = UIColor.clear
picker.clipsToBounds = true//如果子视图的范围超出了父视图的边界，那么超出的部分就会被裁剪掉。
//创建日期选择器
self.containV.addSubview(cancel)
self.containV.addSubview(sure)
self.containV.addSubview(picker)
self.view.addSubview(self.containV)
self.transitioningDelegate = self as UIViewControllerTransitioningDelegate//自定义转场动画
}
//MARK: onClick
@objc func onClickCancel() {
self.dismiss(animated:true, completion:nil)
}
@objc func onClickSure() {
letdateString =String(format:"%02ld-%02ld-%02ld",self.picker.selectedRow(inComponent:0)+(self.currentDateCom.year!),self.picker.selectedRow(inComponent:1)+1,self.picker.selectedRow(inComponent:2)+1)
letdateFormatter =DateFormatter()
dateFormatter.dateFormat="YYYY-MM-dd"
///直接回调显示
ifself.backDate!=nil{
self.backDate!(dateFormatter.date(from: dateString) ??Date())
}
/*** 如果需求需要不能选择已经过去的日期
let dateSelect = dateFormatter.date(from: dateString)
let date = Date()
let calendar = Calendar.current
let dateNowString = String(format: "%02ld-%02ld-%02ld", calendar.component(.year, from: date) , calendar.component(.month, from: date), calendar.component(.day, from: date))
/// 判断选择日期与当前日期关系
let result:ComparisonResult = (dateSelect?.compare(dateFormatter.date(from: dateNowString)!))!
if result == ComparisonResult.orderedAscending {
/// 选择日期在当前日期之前,可以选择使用toast提示用户.
return
}else{
/// 选择日期在当前日期之后. 正常调用
if self.backDate != nil{
self.backDate!(dateFormatter.date(from: dateString) ?? Date())
}
}
*/
self.dismiss(animated:true, completion:nil)
}
///点击任意位置view消失
overridefunctouchesBegan(_touches:Set, with event:UIEvent?) {
super.touchesBegan(touches, with: event)
self.dismiss(animated:true, completion:nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
//MARK: - PickerViewDelegate
extension EWDatePickerViewController:UIPickerViewDelegate,UIPickerViewDataSource {
funcnumberOfComponents(in pickerView:UIPickerView) ->Int{
return3
}
funcpickerView(_pickerView:UIPickerView, numberOfRowsInComponent component:Int) ->Int{
ifcomponent==0{
return10
}elseifcomponent==1{
return12
}else{
letyear:Int= pickerView.selectedRow(inComponent:0)+currentDateCom.year!
letmonth:Int= pickerView.selectedRow(inComponent:1)+1
letdays:Int=howManyDays(inThisYear: year, withMonth: month)
returndays
}
}
privatefunchowManyDays(inThisYear year:Int, withMonth month:Int) ->Int{
if(month==1)||(month==3)||(month==5)||(month==7)||(month==8)||(month==10)||(month==12) {
return31
}
if(month==4)||(month==6)||(month==9)||(month==11) {
return30
}
if(year%4==1)||(year%4==2)||(year%4==3) {
return28
}
ifyear%400==0{
return29
}
ifyear%100==0{
return28
}
return29
}
funcpickerView(_pickerView:UIPickerView, widthForComponent component:Int) ->CGFloat{
returnScreenInfo.Width/3
}
funcpickerView(_pickerView:UIPickerView, rowHeightForComponent component:Int) ->CGFloat{
return40
}
funcpickerView(_pickerView:UIPickerView, titleForRow row:Int, forComponent component:Int) ->String? {
ifcomponent==0{
return"\((currentDateCom.year!)+row)\("年")"
}elseifcomponent==1{
return"\(row+1)\("月")"
}else{
return"\(row+1)\("日")"
}
}
funcpickerView(_pickerView:UIPickerView, didSelectRow row:Int, inComponent component:Int) {
ifcomponent==1{
pickerView.reloadComponent(2)
}
}
}
//MARK: - 转场动画delegate
extension EWDatePickerViewController:UIViewControllerTransitioningDelegate{
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
letanimated =EWDatePickerPresentAnimated(type: .present)
returnanimated
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
letanimated =EWDatePickerPresentAnimated(type: .dismiss)
returnanimated
}
}
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