04장 데이트 피커 사용해 날짜 선택하기
//
// ViewController.swift
// DatePicker
//
// Created by stayfoolish on 16/10/2018.
// Copyright © 2018 stayfoolish. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
let timeSelector: Selector = #selector(ViewController.updateTime)
let interval = 1.0
var count = 0
@IBOutlet var lblCurrentTime: UILabel!
@IBOutlet var lblPickerTime: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
Timer.scheduledTimer(timeInterval: interval, target: self, selector: timeSelector, userInfo: nil, repeats: true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func changeDatePicker(_ sender: UIDatePicker) {
let datePickerview = sender
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss EEE"
lblPickerTime.text = "선택시간: " + formatter.string(from: datePickerview.date)
}
@objc func updateTime() {
// lblCurrentTime.text = String(count)
// count = count + 1
let date = NSDate()
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss EEE"
lblCurrentTime.text = "현재시간: " + formatter.string(from: date as Date)
}
}
05장 피커 뷰 사용해 원하는 항목 선택하기
//
// ViewController.swift
// PickerView
//
// Created by stayfoolish on 17/10/2018.
// Copyright © 2018 stayfoolish. All rights reserved.
//
import UIKit
class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
let MAX_ARRAY_NUM = 10
let PICKER_VIEW_COLUMN = 1
let PICKER_VIEW_HEIGHT:CGFloat = 80
var imageArray = [UIImage?]()
var imageFileName = ["1.jpg","2.jpg","3.jpg","4.jpg","5.jpg","6.jpg","7.jpg","8.jpg","9.jpg","10.jpg"]
@IBOutlet var pickerImage: UIPickerView!
@IBOutlet var lblImageFileName: UILabel!
@IBOutlet var imageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
for i in 0..<MAX_ARRAY_NUM {
let image = UIImage(named: imageFileName[i])
imageArray.append(image)
}
lblImageFileName.text = imageFileName[0]
imageView.image = imageArray[0]
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return PICKER_VIEW_COLUMN
}
func pickerView(_ pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat {
return PICKER_VIEW_HEIGHT
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return imageFileName.count
}
// func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
// return imageFileName[row]
// }
func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
let imageView = UIImageView(image: imageArray[row])
imageView.frame = CGRect(x: 0, y: 0, width: 100, height: 150)
return imageView
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
lblImageFileName.text = imageFileName[row]
imageView.image = imageArray[row]
}
}
06장 얼럿 사용해 경고 표시하기
//
// ViewController.swift
// Alert
//
// Created by stayfoolish on 17/10/2018.
// Copyright © 2018 stayfoolish. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
let imgOn = UIImage(named: "lamp-on.png")
let imgOff = UIImage(named: "lamp-off.png")
let imgRemove = UIImage(named: "lamp-remove.png")
var isLampOn = true
@IBOutlet var lampImg: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
lampImg.image = imgOn
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func btnLampOn(_ sender: UIButton) {
if(isLampOn==true){
let lampOnAlert = UIAlertController(title: "경고", message: "현재 On 상태입니다.", preferredStyle: UIAlertControllerStyle.alert)
let onAction = UIAlertAction(title: "네, 알겠습니다.", style: UIAlertActionStyle.default, handler: nil )
lampOnAlert.addAction(onAction)
present(lampOnAlert, animated: true, completion: nil)
}else{
lampImg.image = imgOn
isLampOn=true
}
}
@IBAction func btnLampOff(_ sender: UIButton) {
if isLampOn {
let lampOffAlert = UIAlertController(title: "램프 끄기", message: "램프를 끄시겠습니까?", preferredStyle: UIAlertControllerStyle.alert)
let offAction = UIAlertAction(title: "네", style: UIAlertActionStyle.default, handler: {ACTION in self.lampImg.image = self.imgOff
self.isLampOn=false
})
let cancelAction = UIAlertAction(title: "아니오", style: UIAlertActionStyle.default, handler: nil )
lampOffAlert.addAction(offAction)
lampOffAlert.addAction(cancelAction)
present(lampOffAlert, animated: true, completion: nil )
}
}
@IBAction func btnLampRemove(_ sender: UIButton) {
let lampRemoveAlert = UIAlertController(title: "램프 제거", message: "램프를 제거하시겠습니까?", preferredStyle: UIAlertControllerStyle.alert)
let offAction = UIAlertAction(title: "아니오, 끕니다(off).", style: UIAlertActionStyle.default, handler: {ACTION in self.lampImg.image = self.imgOff
self.isLampOn=false
})
let onAction = UIAlertAction(title: "아니오, 켭니다(on).", style: UIAlertActionStyle.default){
ACTION in self.lampImg.image = self.imgOn
self.isLampOn=true
}
let removeAction = UIAlertAction(title: "네, 제거합니다.", style: UIAlertActionStyle.destructive, handler: {
ACTION in self.lampImg.image = self.imgRemove
self.isLampOn=false
})
lampRemoveAlert.addAction(offAction)
lampRemoveAlert.addAction(onAction)
lampRemoveAlert.addAction(removeAction)
present(lampRemoveAlert, animated: true, completion: nil )
}
}
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