在Objective-C中獲取下周六的日期？

Question

你如何獲得今天在Objective-C for iOS之后發生的第一個星期六的日期？

Answer 1

NSCalendar *gregorian = [[NSCalendar alloc]initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *date = [NSDate date];
NSDateComponents *weekdayComponents = [gregorian components:NSWeekdayCalendarUnit fromDate:date];
NSInteger todayWeekday = [weekdayComponents weekday];

enum Weeks {
    SUNDAY = 1,
    MONDAY,
    TUESDAY,
    WEDNESDAY,
    THURSDAY,
    FRIDAY,
    SATURDAY
};

NSInteger moveDays=SATURDAY-todayWeekday;
if (moveDays<=0) {
    moveDays+=7;
}

NSDateComponents *components = [NSDateComponents new];
components.day=moveDays;

NSCalendar *calendar=[[NSCalendar alloc] initWithCalendarIdentifier: NSGregorianCalendar];
NSDate* newDate = [calendar dateByAddingComponents:components toDate:date options:0];

NSLog(@"%@",newDate);

Answer 2

[NSDate dateWithNaturalLanguageString: @"next Saturday"]

---

編輯：從OS X 10.9和iOS 8開始，您可以這樣做：

NSCalendar *calendar = [NSCalendar currentCalendar];

NSDate *now = [NSDate date];
NSDateComponents *saturday = [[NSDateComponents alloc] init];
saturday.weekday = 7 /* Saturday */;

NSDate *nextSaturday = [calendar nextDateAfterDate:now matchingComponents:saturday options:0];

Answer 3

這將指導您完成操作日歷日期的過程：

日歷計算