How to get NSDate start of previous month? - ios

Question

I suppose that I ask duplicate question, but I can not find solution for me. I need to get 1st day of the previous month. As I understand I have to get calendar from today, subtract 1 month and set day to be 1st. After that I have to convert to date. Unfortunately I get last day of previous month.
I use following code:
NSDate *maxDate = [[NSDate alloc] init];
NSCalendar *calendarCurr = [NSCalendar currentCalendar];
NSDateComponents *components = [calendarCurr components:NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear fromDate:maxDate];
[components setMonth:-1];
components.day = 1;
NSDate *minDate = [calendarCurr dateFromComponents:components];
NSLog(#"%#", minDate);
EDIT:
Yes, it is duplicate, but answers in that question does not help me. I still get 30/09/2014 (when today is 17/11/2014) instead of 01/10/2014. I suppose that my problem is time of todays date.

Answer 1

Well, Here a new approach:
NSDate *today = [NSDate date];
NSDateFormatter *formatterYear = [[NSDateFormatter alloc] init];
[formatterYear setDateFormat:#"yyyy"];
NSDateFormatter *formatterMonth = [[NSDateFormatter alloc] init];
[formatterMonth setDateFormat:#"MM"];
[formatterMonth setTimeZone:[NSTimeZone timeZoneWithName:#"GMT"]];
NSString *yearString = [formatterYear stringFromDate:today];
NSString *monthString = [formatterMonth stringFromDate:today];
NSInteger month,year;
if ([monthString integerValue] == 1) {
year = [yearString integerValue] -1;
month = 12;
} else
{
year = [yearString integerValue];
month = [monthString integerValue]-1;
}
NSDateFormatter *exitFormatter = [[NSDateFormatter alloc] init];
[exitFormatter setDateFormat:#"yyyy-MM-dd"];
[exitFormatter setTimeZone:[NSTimeZone timeZoneWithName:#"GMT"]];
NSString *stringDate;
if (month < 10) {
stringDate = [NSString stringWithFormat:#"%ld-0%ld-01",(long)year,(long)month];
} else {
stringDate = [NSString stringWithFormat:#"%ld-%ld-01",(long)year,(long)month];
}
NSDate *firstDatePreviousMonth = [exitFormatter dateFromString:stringDate];
NSLog(#"View the date: %#",[firstDatePreviousMonth description]);

Answer 2

Wrong calculation.
Use this code to set Month component.
[components setMonth:components.month -1];

Answer 3

NSDate *currentDate = [NSDate date];
NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc]init];
[dateFormatter1 setDateFormat:#"MM"];
NSString *stringCurrentDate = [dateFormatter1 stringFromDate:currentDate];
int monthInt= [stringCurrentDate intValue];
[dateFormatter1 setDateFormat:#"yyyy"];
NSString *dateString = [dateFormatter1 stringFromDate:currentDate];
int yearInt = [dateString intValue];
monthInt-= 1;
if (monthInt== 0) {
monthInt= 12;
yearInt -=1;
}
dateString = [NSString stringWithFormat:#"%#-01-%#",[#(monthInt)stringValue],[#(yearInt)stringValue]];
NSLog(#"this is previous month first date : %#",dateString);
run it as it is, obviously first day of month will be 01, so this is static here. your can change accordingly. happy coding

Answer 4

Try this:
NSDate *maxDate = [NSDate date];
NSCalendar *calendarCurr = [NSCalendar currentCalendar];
NSDateComponents *components = [calendarCurr components:NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear | NSCalendarUnitTimeZone | NSCalendarUnitSecond | NSCalendarUnitHour | NSCalendarUnitMinute fromDate:maxDate];
[components setMonth:components.month - 1];
[components setDay:1];
NSDate *minDate = [calendarCurr dateFromComponents:components];
NSLog(#">>>>>>>>>>%#", minDate.description);