iSO获取两个日期之间的所有日期数组，精确到天_ios开发获取两个日期之间的年月日数-优快云博客

本文介绍了一种使用Objective-C编程语言获取两个指定日期之间所有日期的方法。通过NSDateFormatter和NSCalendar组件，该方法能够精确到天，并返回一个包含所需日期字符串的数组。

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- (void)viewDidLoad {

[superviewDidLoad];

NSArray *datearr = [selfgetDayArrayLeftDate:@"2017年01月01日"rightDate:@"2017年01月05日"];

}

//获取两个日期之间的所有日期，精确到天

- (NSArray *)getDayArrayLeftDate:(NSString *)aLeftDateStr rightDate:(NSString *)aRightDateStr{

NSDateFormatter *dateFormatter = [[NSDateFormatteralloc]init];

[dateFormatter setDateFormat: @"yyyy年MM月dd日"];

NSDate *aLeftDate = [dateFormatter dateFromString:aLeftDateStr];

NSDate *aRightDate = [dateFormatter dateFromString:aRightDateStr];

if (aLeftDate == aRightDate) {

NSCalendar *gregorian = [[NSCalendaralloc]initWithCalendarIdentifier:NSCalendarIdentifierGregorian];

NSDateComponents *components = [gregoriancomponents:NSCalendarUnitWeekday |NSCalendarUnitYear | NSCalendarUnitMonth |NSCalendarUnitDayfromDate:aLeftDate];

NSDate *beginningOfWeek = [gregorian dateFromComponents:components];

NSDateFormatter *dateday = [[NSDateFormatteralloc]init];

[dateday setDateFormat:@"yyyy-MM-dd"];

NSString *currentDateStr = [dateday stringFromDate:beginningOfWeek];

return @[currentDateStr];

}

NSMutableArray *dayArray = [NSMutableArrayarrayWithCapacity:0];

NSDate *currentDate = aLeftDate;

NSCalendar *gregorian = [[NSCalendaralloc]initWithCalendarIdentifier:NSCalendarIdentifierGregorian];

NSDateComponents *components = [gregoriancomponents:NSCalendarUnitWeekday |NSCalendarUnitYear | NSCalendarUnitMonth |NSCalendarUnitDayfromDate:currentDate];

while (currentDate < aRightDate) {

NSDate *beginningOfWeek = [gregorian dateFromComponents:components];

currentDate = beginningOfWeek;

NSDateFormatter *dateday = [[NSDateFormatteralloc]init];

[dateday setDateFormat:@"yyyy-MM-dd"];

NSString *currentDateStr = [dateday stringFromDate:beginningOfWeek];

[dayArray addObject:currentDateStr];

[components setDay:([components day]+1)];

}

return dayArray;

}