iOS 获取公历、农历日期的年月日

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];
[dateFormater setDateFormat:@"yyyy-MM-dd"];
dateTemp = [dateFormater dateFromString:date];
NSCalendar *localeCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierChinese];
unsigned unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth |  NSCalendarUnitDay;
NSDateComponents *localeComp = [localeCalendar components:unitFlags fromDate:dateTemp];
 //   NSLog(@"%ld_%ld_%ld  %@",(long)localeComp.year,(long)localeComp.month,(long)localeComp.day, localeComp.date);
NSString *y_str = [chineseYears objectAtIndex:localeComp.year-1];
NSString *m_str = [chineseMonths objectAtIndex:localeComp.month-1];
NSString *d_str = [chineseDays objectAtIndex:localeComp.day-1];
NSString *chineseCal_str =nil;
NSString *choose_str = [NSString stringWithFormat: @"%@%@",m_str,d_str];
NSString *riqi_str = [date substringWithRange:NSMakeRange(5, 5)];
if ([d_str isEqualToString:@"初一"]) {
    chineseCal_str =[NSString stringWithFormat: @"%@",m_str];
}else{
    if ([riqi_str isEqualToString:@"01-01"]) {
        chineseCal_str = @"元旦节";
    }else if([riqi_str isEqualToString:@"04-01"]){
        chineseCal_str = @"愚人节";
    }else if([riqi_str isEqualToString:@"05-01"]){
        chineseCal_str = @"劳动节";
    }else if([riqi_str isEqualToString:@"06-01"]){
        chineseCal_str = @"儿童节";
    }else if([riqi_str isEqualToString:@"07-01"]){
        chineseCal_str = @"建军节";
    }else if([riqi_str isEqualToString:@"08-01"]){
        chineseCal_str = @"建党节";
    }else if([riqi_str isEqualToString:@"09-10"]){
        chineseCal_str = @"教师节";
    }else if([riqi_str isEqualToString:@"10-01"]){
        chineseCal_str = @"国庆节";
    }else if([riqi_str isEqualToString:@"12-25"]){
        chineseCal_str = @"圣诞节";
    }else if ([choose_str isEqualToString:@"腊月三十"]) {
        chineseCal_str = @"除夕夜";
    }else if ([choose_str isEqualToString:@"正月十五"]){
        chineseCal_str =@"元宵节";
    }else if ([choose_str isEqualToString:@"二月初二"]){
        chineseCal_str =@"龙头节";
    }else if ([choose_str isEqualToString:@"三月初八"]){
        chineseCal_str =@"清明节";
    }else if ([choose_str isEqualToString:@"五月初五"]){
        chineseCal_str =@"端午节";
    }else if ([choose_str isEqualToString:@"八月十五"]){
        chineseCal_str =@"中秋节";
    }else{
        chineseCal_str =[NSString stringWithFormat: @"%@",d_str];
    }
}
return chineseCal_str;
}

数据准备就这些，下面就是如何处理并显示的问题了。
这个demo采用的是collectioncell显示的，数据中两个比较关键的值一个是当月共多少天，一个是当月第一天是周几。因为collectioncell在显示的时候从左至右一排一排排列的，但是不可能每月的一号都在第一个位置，我做的处理是，根据当月第一天是周几，collectioncell从第几个indexpath.row+1-周几 的那个位置开始显示，cell的数量顺序增加周几个数。

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
LFCalendarCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"LFCalendarCollectionViewCell" forIndexPath:indexPath];
LFCanlendarModel *model = self.sourceDataArray[indexPath.section];
NSArray *arr = model.monthWeekArray;
NSInteger number = indexPath.row+1-[arr[0] integerValue];
if (number>=0) {
    [cell setCellStylebyIndexPath:indexPath withNowInteger:number+1 withYear:yearStr];
}else{
    [cell setCellStylebyIndexPath:indexPath withNowInteger:0  withYear:yearStr];
}
return cell;
}

需要代码的可以去https://github.com/marsLiuFei/CalendarDemo 进行下载。代码不是很严谨，但总体效果能实现。如果有好的修改方案，还希望在GitHub给予fork修改。共同学习，谢谢！

 
 
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作者：重驹
链接：https://www.jianshu.com/p/31b051b7e94f
来源：简书
著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。

 

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