https://www.jianshu.com/p/31b051b7e94f
https://www.cnblogs.com/silence-cnblogs/p/6368437.html
介绍三种方法获取 Date (NSDate) 的年月日。
用 date 表示当前日期。测试日期为公历 2017 年 2 月 5 日，农历丁酉年，鸡年，正月初九。
let date: Date = Date()
NSDate *date = [NSDate date];
获取公历年月日
用 Calendar (NSCalendar) 获取公历年月日
let calendar: Calendar = Calendar(identifier: .gregorian)
print("Year:", calendar.component(.year, from: date))
print("Month:", calendar.component(.month, from: date))
print("Day:", calendar.component(.day, from: date))
NSCalendar *calendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian];
NSLog(@"Year: %ld", [calendar component:NSCalendarUnitYear fromDate:date]);
NSLog(@"Month: %ld", [calendar component:NSCalendarUnitMonth fromDate:date]);
NSLog(@"Day: %ld", [calendar component:NSCalendarUnitDay fromDate:date]);
结果
用 Calendar 和 DateComponents (NSCalendar 和 NSDateComponents) 获取公历年月日
let componentSet: Set<Calendar.Component> = Set(arrayLiteral: .year, .month, .day)
let components: DateComponents = calendar.dateComponents(componentSet, from: date)
print("Year:", components.year!)
print("Month:", components.month!)
print("Day:", components.day!)
NSCalendarUnit calenderUnit = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay;
NSDateComponents *components = [calendar components:calenderUnit fromDate:date];
NSLog(@"Year: %ld", components.year);
NSLog(@"Month: %ld", components.month);
NSLog(@"Day: %ld", components.day);
结果
用 DateFormatter (NSDateFormatter) 获取公历年月日
let formatter: DateFormatter = DateFormatter()
print("Date formatter identifier:", formatter.calendar.identifier) // gregorian by default
formatter.dateFormat = "y"
print("Year:", formatter.string(from: date))
formatter.dateFormat = "M"
print("Month:", formatter.string(from: date))
formatter.dateFormat = "d"
print("Day:", formatter.string(from: date))
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
NSLog(@"Date formatter calendar: %@", formatter.calendar.calendarIdentifier); // gregorian by default
formatter.dateFormat = @"y";
NSLog(@"Year: %@", [formatter stringFromDate:date]);
formatter.dateFormat = @"M";
NSLog(@"Month: %@", [formatter stringFromDate:date]);
formatter.dateFormat = @"d";
NSLog(@"Day: %@", [formatter stringFromDate:date]);
获取农历年月日
用 Calendar (NSCalendar) 获取农历年月日
与公历相似，更改 Calendar (NSCalendar) 的初始化即可，其他代码相同
let calendar: Calendar = Calendar(identifier: .chinese)
NSCalendar *calendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierChinese];
结果
用 Calendar 和 DateComponents (NSCalendar 和 NSDateComponents) 获取农历年月日
同上节用 Calendar (NSCalendar) 获取农历年月日
用 DateFormatter (NSDateFormatter) 获取农历年月日
与公历相似，在初始化 DateFormatter (NSDateFormatter) 之后，给 calendar 属性赋值即可，其他代码相同
let formatter: DateFormatter = DateFormatter()
formatter.calendar = Calendar(identifier: .chinese)
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.calendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierChinese];
结果
计算日期年份的生肖
自定义一个类 ChineseCalendar 来计算。十二生肖数组写在类外面。
十二生肖数组
private let Zodiacs: [String] = ["鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"]
ChineseCalendar 的类方法
static func zodiac(withYear year: Int) -> String {
let zodiacIndex: Int = (year - 1) % Zodiacs.count
return Zodiacs[zodiacIndex]
}
static func zodiac(withDate date: Date) -> String {
let calendar: Calendar = Calendar(identifier: .chinese)
return zodiac(withYear: calendar.component(.year, from: date))
}
测试
print("Chinese zodiac string:", ChineseCalendar.zodiac(withDate: date))
结果
计算日期年份的天干地支
在 ChineseCalendar 中用类方法计算。天干地支数组写在类外面。
天干地支数组
private let HeavenlyStems: [String] = ["甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"]
private let EarthlyBranches: [String] = ["子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"]
ChineseCalendar 的类方法
static func era(withYear year: Int) -> String {
let heavenlyStemIndex: Int = (year - 1) % HeavenlyStems.count
let heavenlyStem: String = HeavenlyStems[heavenlyStemIndex]
let earthlyBrancheIndex: Int = (year - 1) % EarthlyBranches.count
let earthlyBranche: String = EarthlyBranches[earthlyBrancheIndex]
return heavenlyStem + earthlyBranche
}
static func era(withDate date: Date) -> String {
let calendar: Calendar = Calendar(identifier: .chinese)
return era(withYear: calendar.component(.year, from: date))
}
测试
print("Chinese era string:", ChineseCalendar.era(withDate: date))
结果
转载请注明出处：http://www.cnblogs.com/silence-cnblogs/p/6368437.html
效果如动图：
日历.gif
传入年份，返回给你一年的数据：
//调用的接口
- (NSMutableArray *)getNumberOfDaysInMonthByYear:(NSString *)whichYear;
实现的具体代码：
// 获取一年中每月的总天数
- (NSMutableArray *)getNumberOfDaysInMonthByYear:(NSString *)whichYear
{
NSCalendar * calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian]; // 指定日历的算法
NSDateFormatter * formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yyyy-MM-dd"];
NSMutableArray *allYaerMonthDayCountArray = [[NSMutableArray alloc] init];
for (int j=0; j<12; j++) {
NSMutableDictionary *dicM = [[NSMutableDictionary alloc] init];
NSString * dateStr = [NSString stringWithFormat:@"%@-%02d-01",whichYear,j+1];
NSDate * currentDate = [formatter dateFromString:dateStr];
NSRange range = [calendar rangeOfUnit:NSCalendarUnitDay
inUnit: NSCalendarUnitMonth
forDate:currentDate];
[formatter setDateFormat:@"yyyy-MM"];
NSString * str = [formatter stringFromDate:currentDate];
[formatter setDateFormat:@"yyyy-MM-dd"];
NSMutableArray * allDaysArray = [[NSMutableArray alloc] init];
for (NSInteger i = 1; i <= range.length; i++) {
NSString * sr = [NSString stringWithFormat:@"%@-%ld",str,i];
NSDate *suDate = [formatter dateFromString:sr];
[allDaysArray addObject:[self getweekDayWithDate:suDate]];
}
[dicM setObject:@(range.length) forKey:@"monthAllDayCount"];
[dicM setObject:allDaysArray forKey:@"monthWeekArray"];
[allYaerMonthDayCountArray addObject:dicM];
}
return allYaerMonthDayCountArray;
}
/**
* 获得某天的数据
*
* 获取指定的日期是星期几
*/
- (id) getweekDayWithDate:(NSDate *) date
{
NSCalendar * calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian]; // 指定日历的算法
NSDateComponents *comps = [calendar components:NSCalendarUnitWeekday fromDate:date];
// 1 是周日，2是周一 3.以此类推
return @([comps weekday]);
}
返回的数据结构如下图：
返回的数据结构.png
上面的这些都是处理阳历数据，如果需要显示农历和对应的节假日什么的，也提供了一个接口，
// 获取date当天的农历
-(NSString*)getChineseCalendarWithDate:(NSString*)date;
需要传入"2017-01-01"这样的日期字符串。具体代码如下：
-(NSString*)getChineseCalendarWithDate:(NSString*)date{
NSArray *chineseYears = [NSArray arrayWithObjects:
@"甲子", @"乙丑", @"丙寅", @"丁卯", @"戊辰", @"己巳", @"庚午", @"辛未", @"壬申", @"癸酉",
@"甲戌", @"乙亥", @"丙子", @"丁丑", @"戊寅", @"己卯", @"庚辰", @"辛己", @"壬午", @"癸未",
@"甲申", @"乙酉", @"丙戌", @"丁亥", @"戊子", @"己丑", @"庚寅", @"辛卯", @"壬辰", @"癸巳",
@"甲午", @"乙未", @"丙申", @"丁酉", @"戊戌", @"己亥", @"庚子", @"辛丑", @"壬寅", @"癸丑",
@"甲辰", @"乙巳", @"丙午", @"丁未", @"戊申", @"己酉", @"庚戌", @"辛亥", @"壬子", @"癸丑",
@"甲寅", @"乙卯", @"丙辰", @"丁巳", @"戊午", @"己未", @"庚申", @"辛酉", @"壬戌", @"癸亥", nil];
NSArray *chineseMonths=[NSArray arrayWithObjects:
@"正月", @"二月", @"三月", @"四月", @"五月", @"六月", @"七月", @"八月",
@"九月", @"十月", @"十一月", @"腊月", nil];
NSArray *chineseDays=[NSArray arrayWithObjects:
@"初一", @"初二", @"初三", @"初四", @"初五", @"初六", @"初七", @"初八", @"初九", @"初十",
@"十一", @"十二", @"十三", @"十四", @"十五", @"十六", @"十七", @"十八", @"十九", @"二十",
@"廿一", @"廿二", @"廿三", @"廿四", @"廿五", @"廿六", @"廿七", @"廿八", @"廿九", @"三十", nil];
NSDate *dateTemp = nil;
NSDateFormatter *dateFormater = [[NSDateFormatter alloc]init]