@@ -14,6 +14,21 @@ class NewCalendarViewController: UIViewController {
1414 // 日本の祝祭日判定用のインスタンス
1515 private let holidayObject : CalculateCalendarLogic = CalculateCalendarLogic ( )
1616
17+ private var stringDateFormatter : DateFormatter = {
18+ let dateFormatter = DateFormatter ( )
19+ dateFormatter. locale = Locale ( identifier: " ja_JP " )
20+ dateFormatter. timeZone = TimeZone . current
21+ dateFormatter. dateFormat = " yyyy/MM/dd "
22+ return dateFormatter
23+ } ( )
24+
25+ private var currentCalendar : Calendar = {
26+ var calendar = Calendar . current
27+ calendar. locale = Locale ( identifier: " ja_JP " )
28+ calendar. timeZone = TimeZone . current
29+ return calendar
30+ } ( )
31+
1732 override func viewDidLoad( ) {
1833 super. viewDidLoad ( )
1934 setupCalendarView ( )
@@ -25,9 +40,13 @@ class NewCalendarViewController: UIViewController {
2540 if #available( iOS 16 . 0 , * ) {
2641 let calendarView = UICalendarView ( )
2742 calendarView. calendar = Calendar ( identifier: . gregorian)
28- calendarView. locale = Locale ( identifier: " ja " )
43+ calendarView. locale = Locale ( identifier: " ja_JP " )
2944 calendarView. delegate = self
30-
45+ // 例. 任意の日付を1つ選択可能にする
46+ // 補足: 複数日付を選択する場合はこちらをする
47+ // https://developer.apple.com/documentation/uikit/uicalendarselectionmultidate
48+ let dateSelection = UICalendarSelectionSingleDate ( delegate: self )
49+ calendarView. selectionBehavior = dateSelection
3150 view. addSubview ( calendarView)
3251 calendarView. translatesAutoresizingMaskIntoConstraints = false
3352 calendarView. topAnchor. constraint ( equalTo: self . view. safeAreaLayoutGuide. topAnchor) . isActive = true
@@ -64,14 +83,59 @@ extension NewCalendarViewController: UICalendarViewDelegate {
6483 @available ( iOS 16 . 0 , * )
6584 func calendarView( _ calendarView: UICalendarView , decorationFor dateComponents: DateComponents ) -> UICalendarView . Decoration ? {
6685 guard let targetYear = dateComponents. year,
67- let targetMonth = dateComponents. month,
68- let targetDay = dateComponents. day else {
86+ let targetMonth = dateComponents. month,
87+ let targetDay = dateComponents. day else {
6988 return nil
7089 }
71- if holidayObject. judgeJapaneseHoliday ( year: targetYear, month: targetMonth, day: targetDay) {
90+
91+ // 注意: weekdayプロパティはUICalendarViewDelegateまで常にnilになる...
92+ // print("dateComponents.weekday", dateComponents.weekday)
93+
94+ let weekday = getWeekDay ( year: targetYear, month: targetMonth, day: targetDay)
95+ let isHoliday = holidayObject. judgeJapaneseHoliday ( year: targetYear, month: targetMonth, day: targetDay)
96+
97+ if isHoliday {
7298 return . image( UIImage ( systemName: " flag.2.crossed.fill " ) , color: . orange, size: . medium)
99+ } else if weekday == 1 {
100+ return . default( color: . red, size: . small)
101+ } else if weekday == 7 {
102+ return . default( color: . blue, size: . small)
73103 } else {
74104 return nil
75105 }
76106 }
107+
108+ // 年・月・日から曜日（日曜日:1 ~ 土曜日:7）を取得する
109+ private func getWeekDay( year: Int , month: Int , day: Int ) -> Int {
110+ let formatString = " %04d/%02d/%02d "
111+ guard let date: Date = stringDateFormatter. date ( from: String ( format: formatString, year, month, day) ) else {
112+ return 0
113+ }
114+ return currentCalendar. component ( . weekday, from: date)
115+ }
116+ }
117+
118+ // MARK: - UICalendarSelectionSingleDateDelegate
119+
120+ extension NewCalendarViewController : UICalendarSelectionSingleDateDelegate {
121+
122+ // 日付を選択したタイミングで選択した日付情報を返す
123+ @available ( iOS 16 . 0 , * )
124+ func dateSelection( _ selection: UICalendarSelectionSingleDate , didSelectDate dateComponents: DateComponents ? ) {
125+ guard let targetDateComponents = dateComponents else {
126+ return
127+ }
128+ guard let targetYear = targetDateComponents. year,
129+ let targetMonth = targetDateComponents. month,
130+ let targetDay = targetDateComponents. day else {
131+ return
132+ }
133+ print ( " あなたが選択した日付: " , " \( targetYear) 年 \( targetMonth) 月 \( targetDay) 日 " )
134+ }
135+
136+ // 日付を選択可能な状態とするかを設定する
137+ @available ( iOS 16 . 0 , * )
138+ func dateSelection( _ selection: UICalendarSelectionSingleDate , canSelectDate dateComponents: DateComponents ? ) -> Bool {
139+ return true
140+ }
77141}
0 commit comments