nsdate

问题 This question already has answers here : NSDate beginning of day and end of day (21 answers) Closed 3 years ago . I am getting current date and time by using this code let today: NSDate = NSDate() let dateFormatter: NSDateFormatter = NSDateFormatter() dateFormatter.timeStyle = NSDateFormatterStyle.MediumStyle dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss" dateFormatter.timeZone = NSTimeZone(abbreviation: "SGT"); print(dateFormatter.stringFromDate(today)) but i want to get start time and end

问题 I'm trying to work with dates and create dates in the future, but daylight savings keeps getting in the way and messing up my times. Here is my code to move to midnight of the first day of the next month for a date: + (NSDate *)firstDayOfNextMonthForDate:(NSDate*)date { NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; calendar.timeZone = [NSTimeZone systemTimeZone]; calendar.locale = [NSLocale currentLocale]; NSDate *currentDate = [NSDate

问题 I'm trying to work with dates and create dates in the future, but daylight savings keeps getting in the way and messing up my times. Here is my code to move to midnight of the first day of the next month for a date: + (NSDate *)firstDayOfNextMonthForDate:(NSDate*)date { NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; calendar.timeZone = [NSTimeZone systemTimeZone]; calendar.locale = [NSLocale currentLocale]; NSDate *currentDate = [NSDate

问题 I'm trying to generate an array of 30 days from the current date and put them into an array formatted correctly. I currently have a working generater to get 30 days from the current date and put it into an array but I don't know how to use NSDate formatter for an array. I know how to use the formatter for a single item but how can I format all the dates in my array? The format that I would like is (Month Day). Here's my code: NSMutableArray* dates = [[NSMutableArray alloc] init]; int

问题 I am converting NSString to NSDate with help of NSDateFormatter. Now code works fine here in all OS with device & simulator but it is creating different Output at UK, USA region. Here is the code that I am using. NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; NSString *dateString=[NSString stringWithString:@"2010-09-05 04:00:00"]; NSDate *dateObj = [dateFormatter dateFromString:dateString]; Actual date is : 2010-09-05 04

问题 I have Array ; var mydates : [String] = [] let startDate = "2018-03-01" let endDate = "2018-03-03" And I have 3 variable , startDate , endDate , dates , i want to append that variables, like; if startDate = 2018-03-01, and endDate = 2018-03-03 will be add dates variable inside = "2018-03-01,2018-03-02,2018-03-03" between all dates from start and end dates. How can i do it in swift 2 any idea ? 回答1: Here is Solution for Print all dates between two Date (Swift 4 Code) var mydates : [String] = [

问题 I am working to get the contents of an NSData instance written to a file. I am currently using an Xcode playground. This is my code: let validDictionary = [ "numericalValue": 1, "stringValue": "JSON", "arrayValue": [0, 1, 2, 3, 4, 5] ] let rawData: NSData! if NSJSONSerialization.isValidJSONObject(validDictionary) { do { rawData = try NSJSONSerialization.dataWithJSONObject(validDictionary, options: .PrettyPrinted) try rawData.writeToFile("newdata.json", options: .DataWritingAtomic) } catch { /

问题 I am developing a app which uses the date, month, year. I want the current month dates,because current month can have 28,29,30,31 days. I have tried to get current year months. but i don't know the code for above. here is my code. NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; NSDate *today = [NSDate date]; NSCalendar *currentCalendar = [NSCalendar currentCalendar]; NSDateComponents *yearComponents = [currentCalendar components:NSYearCalendarUnit fromDate:today]; int

问题 I would like to compare two NSDates however every date shows as being "Earlier" than todaysDate . Any ideas? let compareResult = self.todaysDate.compare(self.date) if compareResult == NSComparisonResult.OrderedDescending { println("Today is later than date2") } else { println("Future") } To get "todaysDate" let todaysDate = NSDate() let calendar = NSCalendar.currentCalendar() let components = calendar.components(.CalendarUnitHour | .CalendarUnitMinute | .CalendarUnitMonth | .CalendarUnitYear

问题 Is there a particular way to configure an NSPredicate to compare dates? Essentially I have a Photo object that has an NSDate, lastViewed. I'd like to configure an NSPredicate that will return all the Photo objects that have been viewed more recently than a specified time period - typically two days. I'm obtaining the past date like so: NSTimeInterval secondsPast = -172800; NSDate * twoDaysPast = [NSDate dateWithTimeInterval:secondsPast sinceDate:[NSDate date]]; And configuring the NSPredicate