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最近用OC和Swift封装了一个日历控件，可以根据输入的月数，取出自当前月开始N个月的日期数据并展示，同时可选择日期，这里同时封装了一个日历工具类HLCalendar
由于
NSCalendar类很耗性能，所以我这里将它封装成了一个单例，避免重复创建
HLCalendar
其中主要的两个实例方法名如下
-
Obj-C
/**
获取自指定日期开始的月数据
@param date 从该日期所在月开始获取
@param monthes 获取的月的个数
@return 月数据
*/
- (NSMutableArray *)monthsWithDate:(NSDate *)date monthes:(int)monthes;
/**
获取指定日期的日历数据
@param monthes 获取的月的个数
@param fromDate 从该日期开始获取
@return 日历数据
*/
- (NSMutableDictionary *)calendarDataWithMonthes:(int)monthes fromDate:(NSDate *)fromDate;
具体实现：
- (NSMutableArray *)monthsWithDate:(NSDate *)date monthes:(int)monthes {
if (monthesC == monthes && monthesArr.count == monthes) {
return monthesArr;
}
monthesC = monthes;
NSMutableArray *months = [NSMutableArray array];
NSCalendar * calendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian];
for (int i = 0; i < monthes; i++) {
NSDateComponents *comps = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth fromDate:date];
[comps setYear:0];
[comps setMonth:i];
NSDate *newdate = [calendar dateByAddingComponents:comps toDate:date options:0];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.dateFormat = @"yyyy年MM月";
NSString *str = [NSString stringWithFormat:@"%@",[formatter stringFromDate:newdate]];
[months addObject:str];
}
monthesArr = [months mutableCopy];
return monthesArr;
}
- (NSMutableDictionary *)calendarDataWithMonthes:(int)monthes fromDate:(NSDate *)fromDate {
if (monthesC == monthes && dateSource.allKeys.count == monthes) {
return dateSource;
}
monthesC = monthes;
NSMutableDictionary *calendarData = [NSMutableDictionary dictionary];
for (int i = 0; i < monthes; i++) {
NSDate *curMonthDate = [self dateWithDateStr:[self monthsWithDate:fromDate monthes:monthes][i] format:@"yyyy年MM月"];
// 该日期对应的月的首日是周几
NSInteger firstWeekday = [self weekdayOfFirstDayInDate:curMonthDate];
// 该日期对应的月的日期数
NSInteger totalDaysOfMonth = [self totalDaysInMonthOfDate:curMonthDate];
// 取出字典对应月的数据数组
NSMutableArray *monthArr = [NSMutableArray array];
for (int j = 0; j < ceilf((totalDaysOfMonth + firstWeekday) / 7.0) * 7; j++) {
if (j < firstWeekday) {
[monthArr addObject:@{
@"day":@"",
@"chineseDay":@"",
@"date":@""
}];
} else if (j >= totalDaysOfMonth + firstWeekday) {
[monthArr addObject:@{
@"day":@"",
@"chineseDay":@"",
@"date":@""
}];
} else {
NSInteger day = j - firstWeekday + 1;
NSDate *curDate = [self dateWithDateStr:[NSString stringWithFormat:@"%@%02ld日",[self monthsWithDate:fromDate monthes:monthes][i],(long)day] format:@"yyyy年MM月dd日"];
NSDateComponents *comps0 = [[NSCalendar currentCalendar] components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:[NSDate date]];
NSDateComponents *comps1 = [[NSCalendar currentCalendar] components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:curDate];
if (comps0.year == comps1.year && comps0.month == comps1.month && comps0.day == comps1.day) {
[monthArr addObject:@{
@"day":@"今天",
@"chineseDay":[self chineseCalendarOfDate:curDate],
@"date":curDate
}];
} else if (comps0.year == comps1.year && comps0.month == comps1.month && (comps0.day + 1) == comps1.day) {
[monthArr addObject:@{
@"day":@"明天",
@"chineseDay":[self chineseCalendarOfDate:curDate],
@"date":curDate
}];
} else {
[monthArr addObject:@{
@"day":[NSString stringWithFormat:@"%ld",(long)day],
@"chineseDay":[self chineseCalendarOfDate:curDate],
@"date":curDate
}];
}
}
}
[calendarData setObject:monthArr forKey:[self monthsWithDate:fromDate monthes:monthes][i]];
}
dateSource = [calendarData mutableCopy];
return dateSource;
}
-
Swift
func monthesDataWith(date: Date, monthes: Int) -> NSMutableArray {
if montherC == monthes && montherArr?.count == monthes {
return montherArr!
}
montherC = monthes
let months: NSMutableArray = NSMutableArray()
let calendar: Calendar = Calendar(identifier: .gregorian)
for i in 0..<monthes {
var comps: DateComponents = calendar.dateComponents(Set(arrayLiteral: .year, .month), from: date)
comps.year = 0
comps.month = i
let newDate = calendar.date(byAdding: comps, to: date)
let formatter: DateFormatter = DateFormatter()
formatter.dateFormat = "yyyy年MM月"
let str: String = formatter.string(from: newDate!)
months.add(str)
}
montherArr = months.mutableCopy() as? NSMutableArray
return montherArr!
}
func calendarDataWith(monthes: Int, fromDate: Date) -> NSMutableDictionary {
if montherC == monthes && dateSource?.allKeys.count == monthes {
return dateSource!
}
montherC = monthes
let calendarData: NSMutableDictionary = NSMutableDictionary()
for i in 0..<monthes {
let curMonthDate: Date = dateWith(dateStr: monthesDataWith(date: fromDate, monthes: monthes)[i] as! String, format: "yyyy年MM月")
let firstWeekDay: Int = weekdayOfFirstDayIn(date: curMonthDate)
let totalDaysOfMonth: Int = totalDaysInMonthOfDate(date: curMonthDate)
let monthArr: NSMutableArray = NSMutableArray()
for j in 0..<Int(ceilf(Float(totalDaysOfMonth + firstWeekDay) / 7.0) * 7) {
if j < firstWeekDay {
monthArr.add([
"day":"",
"chineseDay":"",
"date":""
])
} else if j >= (totalDaysOfMonth + firstWeekDay) {
print(j)
monthArr.add([
"day":"",
"chineseDay":"",
"date":""
])
} else {
let day: Int = j - firstWeekDay + 1
let curDate: Date = dateWith(dateStr: String(format: "\(monthesDataWith(date: fromDate, monthes: monthes)[i])%02d日", day), format: "yyyy年MM月dd日")
let comps0: DateComponents = Calendar.current.dateComponents(Set(arrayLiteral: .year, .month, .day), from: Date())
let comps1: DateComponents = Calendar.current.dateComponents(Set(arrayLiteral: .year, .month, .day), from: curDate)
if comps0.year == comps1.year && comps0.month == comps1.month && comps0.day == comps1.day {
monthArr.add([
"day":"今天",
"chineseDay":chineseCalendarOfDate(date: curDate),
"date":curDate
])
} else if comps0.year == comps1.year && comps0.month == comps1.month && (comps0.day! + 1) == comps1.day! {
monthArr.add([
"day":"明天",
"chineseDay":chineseCalendarOfDate(date: curDate),
"date":curDate
])
} else {
monthArr.add([
"day":"\(day)",
"chineseDay":chineseCalendarOfDate(date: curDate),
"date":curDate
])
}
}
}
calendarData.setObject(monthArr, forKey: monthesDataWith(date: fromDate, monthes: monthes)[i] as! NSCopying)
}
dateSource = calendarData.mutableCopy() as? NSMutableDictionary
return dateSource!
}
UI部分就不赘述了，如下
Paste_Image.gif
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