How do I take a date and extract the day in iOS"

Question

I have a webservice that returns the date in this format:

2013-04-14

How do i figure out what day this corresponds to?

Answer 1

An alternate method for getting the weekday can be:

NSString *myDateString = @"2013-04-14";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd"];

NSDate *date = [dateFormatter dateFromString:myDateString];
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSWeekdayCalendarUnit fromDate:date];

NSInteger weekday = [components weekday];
NSString *weekdayName = [dateFormatter weekdaySymbols][weekday - 1];

NSLog(@"%@ is a %@", myDateString, weekdayName);

Answer 2

You can use this code it working for me.

NSString *dateString = @"2013-04-14";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd"];
NSDate *dateFromString = [[NSDate alloc] init];
dateFromString = [dateFormatter dateFromString:dateString];
[dateFormatter setDateFormat:@"EEEE"];
NSLog(@"%@", [dateFormatter stringFromDate:dateFromString]);

Answer 3

This code will take your string, convert it to an NSDate object and extract both the number of the day (14) and the name of the day (Sunday)

NSString *myDateString = @"2013-04-14";

// Convert the string to NSDate
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = @"yyyy-MM-dd";
NSDate *date = [dateFormatter dateFromString:myDateString];

// Extract the day number (14)
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSDayCalendarUnit fromDate:date];
NSInteger day = [components day];

// Extract the day name (Sunday)
dateFormatter.dateFormat = @"EEEE";
NSString *dayName = [dateFormatter stringFromDate:date];

// Print
NSLog(@"Day: %d: Name: %@", day, dayName);

Note: This code is for ARC. If MRC, add [dateFormatter release] at the end.

Answer 4

Swift 3:

---

let datFromat = DateFormatter()

datFormat.dateFormat = "EEEE"

let name = datFormat.string(from: Date())

Bonus: If you want to set your own date template instead of using Date() above:

let datFormat = DateFormatter()

datFormat.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"

let thisDate = datFormat.date(from: "2016-10-13T18:00:00-0400")

Then call the 1st code after this.

Answer 5

If you have 2013-04-14 stored in a NSString called date, then you can do this...

NSArray *dateComponents = [date componentsSeperatedByString:@"-"];
NSString *day = [dateComponents lastObject];