我试图列出给定月份的所有星期,例如开始日期2020年9月6日结束日期2020年9月12日
如果下周是一周,则还应显示该日期,例如开始日期2020年9月27日结束日期2020年10月3日
一个将NSDate作为输入并使用NSArray或NSDictionary返回日期数组(一周的开始和结束日期)的函数,只要给定NSDate所需的开始和结束日期,任何东西都可以工作
我已经尝试过DateTools,Datz和其他Pod,但仍然无法获得此功能
-(void) getWeeksOfTheMonthCurrent {
NSCalendar *calendar = [[NSCalendar alloc]initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDateComponents *oneDayAgoComponents = [[NSDateComponents alloc] init];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
for(int currentdateindexpath=0;currentdateindexpath<=10currentdateindexpath++)
{
NSDateComponents* subcomponent = [calendar components:NSCalendarUnitWeekday
fromDate:[NSDate date]];
[oneDayAgoComponents setDay: 0 - ([subcomponent weekday] - 1)];
NSDate *beginningOfWeek = [calendar dateByAddingComponents:oneDayAgoComponents
toDate:[NSDate date] options:0];
[formatter setDateFormat:@"dd/MM/yy"];
NSString *weekstartdate = [formatter stringFromDate:beginningOfWeek];
NSLog(@"weekstartdate %@",weekstartdate);
NSDateComponents *components =
[calendar components:(NSCalendarUnitYear | NSCalendarUnitMonth |
NSCalendarUnitDay) fromDate: beginningOfWeek];
beginningOfWeek = [calendar dateFromComponents:components];
[oneDayAgoComponents setDay:7- ([subcomponent weekday])];
NSDate *endOfWeek = [calendar dateByAddingComponents:oneDayAgoComponents
toDate:[NSDate date] options:0];
[formatter setDateFormat:@"dd/MM/yy"];
NSString *weekendtdate = [formatter stringFromDate:endOfWeek];
NSLog(@"weekendtdate %@",weekendtdate);
}
}
我已经尝试过使用此代码来获取开始日期和结束日期,但这不是我想要的,我只是想要一个以NSDate为参数并返回包含开始日期和结束日期的对象数组的函数
您不需要使用第三方库来执行此操作,此类事情提供了很多提供的日期函数(主要参见参考资料中的NSCalendar
)。
这个答案在Swift中,但是我会留给您找出转换的方法。
let calendar = Calendar.current
let now = Date()
let monthInterval = calendar.dateInterval(of: .month, for: now)!
var weekIntervals: [DateInterval] = []
var startDate = monthInterval.start
while monthInterval.contains(startDate) {
weekIntervals.append(calendar.dateInterval(of: .weekOfMonth, for: startDate)!)
startDate = calendar.date(byAdding: .weekOfYear, value: 1, to: startDate)!
}
// Not sure why this is needed, seems like the above should handle it
let finalWeek = calendar.dateInterval(of: .weekOfMonth, for: startDate)!
if finalWeek.start < monthInterval.end {
weekIntervals.append(finalWeek)
}
打印结果给出了……
let formatter = DateIntervalFormatter()
formatter.dateStyle = .medium
weekIntervals.forEach {
print(formatter.string(from: $0)!)
}
// Jul 26, 2020, 12:00 AM – Aug 2, 2020, 12:00 AM
// Aug 2, 2020, 12:00 AM – Aug 9, 2020, 12:00 AM
// Aug 9, 2020, 12:00 AM – Aug 16, 2020, 12:00 AM
// Aug 16, 2020, 12:00 AM – Aug 23, 2020, 12:00 AM
// Aug 23, 2020, 12:00 AM – Aug 30, 2020, 12:00 AM
// Aug 30, 2020, 12:00 AM – Sep 6, 2020, 12:00 AM
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我来说两句