swift-日期选择器

继上篇地址选择器，日期选择器同样继承自PickerBaseView。

PickerBaseView详情参见地址(省-市-县)选择器
效果：

日期选择.png

自定义DatePickerView

import UIKit

typealias DateResultBlock = (_ selectValue:String) -> Void

class DatePickerView: PickerBaseView {
    
    var resultBlock:DateResultBlock?
    
    var datePickerMode:UIDatePickerMode = UIDatePickerMode.dateAndTime
    var title:String = ""
    var minDateStr:String = ""
    var maxDateStr:String = ""
    var selectValue:String = ""
    var isAutoSelect:Bool = true
    
    lazy var datePicker:UIDatePicker = {
        let picker = UIDatePicker(frame: CGRectMake(0, kTopViewHeight+0.5, SCREEN_WIDTH, kDatePicHeight))
        picker.backgroundColor = UIColor.white
        picker.datePickerMode = self.datePickerMode
        picker.locale = NSLocale.init(localeIdentifier: "zh_CHS_CN") as Locale
        
        picker.minimumDate = self.minDateStr.beDate
        picker.maximumDate = self.maxDateStr.beDate
        
        picker.setDate(Date(), animated: true)
        picker.addTarget(self, action: #selector(didSelectedValueChanged(sender:)), for: .valueChanged)
        
        return picker
    }()
    
    static func showDatePickerView(withTitle title:String, dateType type:UIDatePickerMode, defaultSelValue selValue:String, minDateStr min:String, maxDateStr max:String, isAutoSelect autoSelect:Bool, dateResultBlock resultBlock:@escaping DateResultBlock){
        let datePickerView = DatePickerView.pickerView(withTitle: title, dateType: type, defaultSelValue: selValue, minDateStr: min, maxDateStr: max, isAutoSelect: autoSelect, dateResultBlock: resultBlock)
        datePickerView.showWithAnimation(animate: true)
        
    }
    private override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    static func pickerView(withTitle title:String, dateType type:UIDatePickerMode, defaultSelValue selValue:String, minDateStr min:String, maxDateStr max:String, isAutoSelect autoSelect:Bool, dateResultBlock resultBlock:@escaping DateResultBlock) -> DatePickerView{
        let datePickerVeiw = DatePickerView()
        datePickerVeiw.datePickerMode = type
        datePickerVeiw.title = title
        datePickerVeiw.minDateStr = min
        datePickerVeiw.maxDateStr = max
        datePickerVeiw.isAutoSelect = autoSelect
        datePickerVeiw.resultBlock = resultBlock
        
        if selValue.utf8Length > 0 {
            datePickerVeiw.selectValue = selValue
        }else{
            datePickerVeiw.selectValue = datePickerVeiw.getDateByDatePickerMode()
        }
        datePickerVeiw.initUI()
        
        return datePickerVeiw
    }
    //值变化
    func didSelectedValueChanged(sender:UIDatePicker){
        self.selectValue = sender.date.ymdStr
        if isAutoSelect {
            self.resultBlock!(selectValue)
        }
    }
    //获取日期
    func getDateByDatePickerMode() -> String{
        var dateStr:String = ""
        switch self.datePickerMode {
        case UIDatePickerMode.time:
            dateStr = Date().hm
            break
        case UIDatePickerMode.date:
            dateStr = Date().ymd
            break
        case UIDatePickerMode.dateAndTime:
            dateStr = Date().ymdhm
            break
        case UIDatePickerMode.countDownTimer:
            dateStr = Date().hm
            break
//        default:
//            break
        }
        return dateStr
    }
    override func initUI() {
        super.initUI()
        self.titleLabel.text = title
        self.alertView.addSubview(self.datePicker)
    }
    
    func showWithAnimation(animate:Bool){
        UIApplication.shared.keyWindow?.addSubview(self)
        if animate {
            //初始位置
            var rect = self.alertView.frame
            rect.origin.y = SCREEN_HEIGHT
            self.alertView.frame = rect
            
            //浮现动画
            UIView.animate(withDuration: 0.3, animations: { 
                var rect = self.alertView.frame
                rect.origin.y -= kDatePicHeight+kTopViewHeight
                self.alertView.frame = rect
            })
        }
    }
    //关闭动画
    func dismissWithAnimation(animate:Bool){
        UIView.animate(withDuration: 0.2, animations: { 
            var rect = self.alertView.frame
            rect.origin.y += kDatePicHeight+kTopViewHeight
            self.alertView.frame = rect
            self.backgroundView.alpha = 0
        }) { (finished) in
            self.leftBtn.removeFromSuperview()
            self.rightBtn.removeFromSuperview()
            self.titleLabel.removeFromSuperview()
            self.lineView.removeFromSuperview()
            self.topView.removeFromSuperview()
            self.alertView.removeFromSuperview()
            self.datePicker.removeFromSuperview()
            self.backgroundView.removeFromSuperview()
            self.removeFromSuperview()
            
        }
    }

}
extension DatePickerView{
    override func didTapBackgroundView() {
        self.dismissWithAnimation(animate: false)
    }
    override func clickLeftBtn() {
        self.dismissWithAnimation(animate: true)
    }
    override func clickRightBtn() {
        self.dismissWithAnimation(animate: true)
        self.resultBlock!(selectValue)
    }
}

使用方法和地址选择器一样：

    //日期选择
    lazy var dateTextField: TapTextField = {
        let dateT = TapTextField()
        dateT.placeholder = "请选择车险到期日期"
        dateT.delegate = self
        dateT.leftStr = "到期日期"
        return dateT
        
    }()

        dateTextField.setTapActionBlock { 
            DatePickerView.showDatePickerView(withTitle: "到期日期", dateType: UIDatePickerMode.date, defaultSelValue: "", minDateStr: Date().ymd, maxDateStr: "2020-12-31", isAutoSelect: true, dateResultBlock: { [unowned self](selectedValue) in
                self.dateTextField.text = selectedValue
            })