iOS/swift之UIDatePickView

1.***************UIDatePickView 简单使用*****************

/**
 UIDatePicker
 
 使用：
 let datePick =    LYBUIDateickview.init(frame: CGRect(x: 10, y: 0, width: WIDTH, height: 250))
 datePick.selectDateBlock={
 (dateStr)in
 print("\(dateStr)")
 }
 view.addSubview(datePick)
 
 */
import UIKit

class LYBUIDateickview: UIView {
    
    var datePicker:UIDatePicker!
    var dateString:String=""
    //定义一个block返回选择是时间
    var selectDateBlock:(String)->()={
    (String)in}
    override init(frame: CGRect) {
        super.init(frame:frame)
        createDatePickView(frame: frame)
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func createDatePickView(frame: CGRect){
        let buttonView=UIView.init(frame: CGRect.init(x: 0, y: 0, width: WIDTH, height: 50))
        addSubview(buttonView)
        let cancelBtn=UIButton.init(frame: CGRect.init(x: 20, y: 0, width: 100, height: 50))
        cancelBtn.setTitle("取消", for: UIControl.State.normal)
        cancelBtn.tag=10
        cancelBtn.addTarget(self, action: #selector(sureOrcanceBtnClick), for: UIControl.Event.touchUpInside)
        buttonView.addSubview(cancelBtn)
        
        let sureBtn=UIButton.init(frame: CGRect.init(x: WIDTH-150, y: 0, width: 100, height: 50))
        sureBtn.setTitle("确定", for: UIControl.State.normal)
        sureBtn.tag=11
        sureBtn.addTarget(self, action: #selector(sureOrcanceBtnClick), for: UIControl.Event.touchUpInside)
        buttonView.addSubview(sureBtn)
        //创建日期选择器
      datePicker = UIDatePicker(frame: CGRect(x:0, y:50, width:WIDTH, height:frame.size.height-50))
        //将日期选择器区域设置为中文，则选择器日期显示为中文
        datePicker.locale = Locale(identifier: "zh_CN")
        //文本显示的颜色
        datePicker.setValue(UIColor.white, forKey: "textColor")
        datePicker.datePickerMode = .date//只显示日期
        //        datePicker.datePickerMode = .time//只显示时间
        
        datePicker.minimumDate=Date.init(timeIntervalSince1970: 60*60*24*365*5)//最小显示时间
        datePicker.maximumDate=Date.init(timeInterval: 60*60*24*365*50, since: Date.init())//最大显示时间
        //注意：action里面的方法名后面需要加个冒号“：”----有确定按钮可以不要这个监听
//        datePicker.addTarget(self, action: #selector(dateChanged),
//                             for: .valueChanged)
        self.addSubview(datePicker)
    }
   
    //确认或取消按钮
    @objc func sureOrcanceBtnClick(sender:UIButton){
        switch sender.tag {
        case 10://取消
            self.removeFromSuperview()
            break
            
        case 11://确认
            //更新提醒时间文本框
            let formatter = DateFormatter()
            //日期样式
            formatter.dateFormat = "yyyy年MM月dd日 HH:mm:ss"
           selectDateBlock(formatter.string(from: datePicker.date))
           self.removeFromSuperview()
            break
            
        default: break
            
        }
    }

//日期选择器响应方法
    @objc func dateChanged(datePicker : UIDatePicker){
//    //更新提醒时间文本框
//    let formatter = DateFormatter()
//    //日期样式
//    formatter.dateFormat = "yyyy年MM月dd日 HH:mm:ss"
//    print(formatter.string(from: datePicker.date))
}
    
   
}