前语
日常开发中经常会遇到日期挑选，为了方便运用，简单封装了一个日历控件，在此抛砖引玉供我们参阅。
作用
功能
- 支撑单选、区间
- 支撑默许选中日期
- 支撑约束月份
- 支撑过去、当前、未来模式
-
支撑
frame、AutoLayout
原理
层次结构运用UIStackView布局，UICollectionView复用，布景运用DecorationView。
核心代码
日历核心代码在于核算每个月的日期，主要代码如下：
func month() -> [CLCalendarMonthModel] {
func day(with date: Date, section: Int) -> [CLCalendarDayModel] {
var newDate = date
let tatalDay = newDate.daysInMonth
let firstDay = max(0, newDate.weekday - 1)
let columns = Int(ceil(CGFloat(tatalDay + firstDay) / CGFloat(weekArray.count)))
var resultArray = [CLCalendarDayModel]()
for column in 0 ..< columns {
for weekDay in 0 ..< weekArray.count {
if column == 0,
weekDay <= firstDay - 1
{
resultArray.append(CLCalendarDayModel())
} else {
let subtitle: String? = {
guard !newDate.isToday else { return "今日" }
guard config.isShowLunarCalendar else { return nil }
guard let index = chinese.dateComponents([.day], from: newDate).day else { return nil }
return chineseDayArray[index - 1]
}()
let type: CLCalendarDayModel.CLCalendarDayType = {
guard !newDate.isToday else { return .today }
guard newDate.compare(todayDate) == .orderedDescending else { return .future }
return .past
}()
let dayModel = CLCalendarDayModel(title: "\(newDate.day)", date: newDate, subtitle: subtitle, type: type)
resultArray.append(dayModel)
newDate = newDate + 1.days
if beginDate?.year == dayModel.date?.year,
beginDate?.month == dayModel.date?.month,
beginDate?.day == dayModel.date?.day
{
startIndexPath = .init(row: 0, section: section)
}
guard (resultArray.count - firstDay) != tatalDay else { break }
}
}
}
return resultArray
}
var resultArray = [CLCalendarMonthModel]()
let month: Int = {
var value = 0
if config.type == .past {
value = config.limitMonth - 1
} else if config.type == .today {
value = config.limitMonth / 2
}
return value
}()
let start = todayDate - month.months
for i in 0 ..< config.limitMonth {
let date = start + i.months
let headerModel = CLCalendarMonthModel(headerText: date.format(with: "yyyy年MM月"),
month: date.format(with: "MM"),
daysArray: day(with: Date(year: date.year, month: date.month, day: 1), section: i))
resultArray.append(headerModel)
}
return resultArray
}
基础装备
struct CLCalendarConfig {
enum CLCalendarType {
case past
case today
case future
}
enum CLSelectType {
case single
case area
}
struct CLTouchType: OptionSet {
static let past = CLTouchType(rawValue: 1)
static let today = CLTouchType(rawValue: 1 << 1)
static let future = CLTouchType(rawValue: 1 << 2)
let rawValue: Int64
init(rawValue: Int64) {
self.rawValue = rawValue
}
}
struct CLColor {
var background = "#ffffff".uiColor
var topToolBackground = "#F4F4F4".uiColor
var topToolText = "#444444".uiColor
var topToolTextWeekend = "#3CCA79".uiColor
var sectionBackgroundText = "f2f2f2".uiColor
var selectStartBackground = "#4bce817f".uiColor
var selectBackground = "#afe9c77f".uiColor
var selectEndBackground = "#4bce817f".uiColor
var todayText = "#32cd32".uiColor
var titleText = "#555555".uiColor
var subtitleText = "#555555".uiColor
var selectTodayText = "#32cd32".uiColor
var selectTitleText = "#ffffff".uiColor
var selectSubtitleText = "#ffffff".uiColor
var failureTitleText = "#a9a9a9".uiColor
var failureSubtitleText = "#a9a9a9".uiColor
var failureBackground = "#dcdcdc32".uiColor
}
var color = CLColor()
var selectBegin: Date?
var selectEnd: Date?
var limitMonth = 12
var type = CLCalendarType.today
var selectType = CLSelectType.area
var touchType: CLTouchType = [.today, .past]
var isShowLunarCalendar = true
var insetsLayoutMarginsFromSafeArea = true
var headerHight = 50.0
}
总结
定制化开发请自行参阅CLDemo修改 ， 如果喜爱，欢迎star。
