Hi friends i am doing a alarm application in that i had requierment Repeat alarm as selected days(Monday, tuesday,--). Once select Monday the alarm will fire on every monday. How to do this any buddy suggest me.
Advance Thanks.
When notification fire running this for get another 7 week days.
NSDate *localDate = [NSDate date];
NSDateFormatter *dateFormatter1 = [[[NSDateFormatter alloc]init]autorelease];
dateFormatter1.dateFormat = #"EEEE MMMM d, yyyy";
NSString *dateString = [dateFormatter1 stringFromDate: localDate];
NSLog(#"date:%#",dateString);
for (int i=0; i<8; i++) {
// How much day to add
int addDaysCount = i;
// Creating and configuring date formatter instance
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"EEEE MMMM d, yyyy"];
// Retrieve NSDate instance from stringified date presentation
NSDate *dateFromString = [dateFormatter dateFromString:dateString];
// NSLog(#"dateFormmater:%#",dateFromString);
// Create and initialize date component instance
NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
[dateComponents setDay:addDaysCount];
// Retrieve date with increased days count
NSDate *newDate = [[NSCalendar currentCalendar]
dateByAddingComponents:dateComponents
toDate:dateFromString options:0];
NSString* weekDayString=[dateFormatter stringFromDate:newDate];
NSLog(#"New date: %#", [dateFormatter stringFromDate:newDate]);
//here check the selected week is in your Selectedweeks array then add notification
}
Related
I have a webservice that returns the date in this format:
2013-04-14
How do i figure out what day this corresponds to?
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.
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);
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]);
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];
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.
I'm using the code below to extract the date only from NSDate. What am I doing wrong?
NSDate* now = [NSDate date];
NSLog(#"Now Date %#",now);
NSDateFormatter *format = [[NSDateFormatter alloc] init];
format.dateFormat = #"dd-MM-yyyy";
NSString *stringDate = [format stringFromDate:now];
NSDate *todaysDate = [format dateFromString:stringDate];
NSLog(#"Today's Date without Time %#", todaysDate);
Log:
2014-06-21 12:27:23.284 App[69727:f03] Now Date 2014-06-21 19:27:23 +0000
2014-06-21 12:27:23.285 App[69727:f03] Today's Date without Time 2014-06-21 07:00:00 +0000
Why am I getting: 07:00:00 +0000 at the end?
I would like to get an NSDate in the in the following format:
2014-06-21 00:00:00 +0000
Having 0's for time, seconds, etc. is not important.
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd"];
NSDate *now = [[NSDate alloc] init];
NSString *theDate = [dateFormat stringFromDate:now];
should work
Another solution: using NSCalendar:
NSCalendar *cal = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
[cal setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:1]]; // I'm in Paris (+1)
NSDateComponents *comps = [cal components:NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay fromDate:[NSDate date]];
comps.hour = 0;
comps.minute = 0;
comps.second = 0;
NSDate *newDate = [cal dateFromComponents:comps ];
NSLog(#"date: %#",newDate);
Adjust timezone param, you will receive something like: date: 2014-06-21 00:00:00 +0000
If you don't care about the time, NSDate is not the right storage structure for you. An NSDate represents a specific moment in time - there is no NSDate without a time. What you're seeing is the logged description of an NSDate, which is the full printout in GMT.
If you want to keep track of the year, month and day only, then use NSDateComponents instead, and extract only the components you are interested in. You can then use the components object and pass it around as you like.
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd-MM-yyyy"];
NSString *strDate = [dateFormatter stringFromDate:[NSDate date]];
With the code above, the NSDate object will HAVE time. But the string will be a date only text.
This is the code using .
#include <time.h>
- (NSDate *)dateFromISO8601String:(NSString *)string {
if (!string) {
return nil;
}
struct tm tm;
time_t t;
strptime([string cStringUsingEncoding:NSUTF8StringEncoding], "%Y-%m-%dT%H:%M:%S%z", &tm);
tm.tm_hour = 0;
tm.tm_min = 0;
tm.tm_sec = 0;
tm.tm_isdst = -1;
t = mktime(&tm);
return [NSDate dateWithTimeIntervalSince1970:t + [[NSTimeZone localTimeZone] secondsFromGMT]];
}
- (NSString *)ISO8601String:(NSDate*)aDate {
struct tm *timeinfo;
char buffer[80];
time_t rawtime = [aDate timeIntervalSince1970] - [[NSTimeZone localTimeZone] secondsFromGMT];
timeinfo = localtime(&rawtime);
strftime(buffer, 80, "%Y-%m-%dT%H:%M:%S%z", timeinfo);
return [NSString stringWithCString:buffer encoding:NSUTF8StringEncoding];
}
NSString *currentDateStr = [self ISO8601String:[NSDate date]];
NSDate *dateWithoutTime = [self dateFromISO8601String:currentDateStr];
NSLog(#"currentDateStr: %#",currentDateStr);
NSLog(#"dateWithoutTime: %#",dateWithoutTime);
I am trying to work with NSDate and it is not working for me, I am so confused right now. So the basic thing I want works, but it needs to be the day of today and not from the year 2000.
So what I want is that the Date should be the date of today with the hours that are in my string bU and eU and not the date from the year 2000 with the hours of my string.
Here is a piece of my code:
NSDate *localNotDate;
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setTimeZone:[NSTimeZone localTimeZone]];
[df setDateFormat:#"HH:mm"];
NSDate *bU = [df dateFromString:[[[self alarmArray] objectAtIndex:arrayInt] beginUur]]; // This is a 24:00 format string
NSDate *eU = [df dateFromString:[[[self alarmArray] objectAtIndex:arrayInt] eindUur]]; // This is a 24:00 format string
if (intForInsideForLoop == 0) { // Setup NSDate on first loop.
localNotDate = bU; // This gives the date 2000-01-01 08:24
}
if (intForInsideForLoop < timesOnDay) {
localNotDate = [localNotDate dateByAddingTimeInterval:(interval * 60)]; // Adds minutes to the date of today.
NSDateFormatter *dtest = [[NSDateFormatter alloc] init];
[dtest setTimeZone:[NSTimeZone localTimeZone]];
[dtest setDateFormat:#"yyyy-MM-dd HH:mm"];
NSLog(#"%#", [dtest stringFromDate:localNotDate]); // This gives the date 2000-01-01 08:24. it should be like It's Today thursday so 2014-05-08 08:24
}
I have found the answer to my problem with the method Martin has given from the post. This method converts an "Time" string like (18:00) to the date of today at 18:00.
Here it is:
- (NSDate *)todaysDateFromString:(NSString *)time
{
// Split hour/minute into separate strings:
NSArray *array = [time componentsSeparatedByString:#":"];
// Get year/month/day from today:
NSCalendar *cal = [NSCalendar currentCalendar];
NSDateComponents *comp = [cal components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit fromDate:[NSDate date]];
// Set hour/minute from the given input:
[comp setHour:[array[0] integerValue]];
[comp setMinute:[array[1] integerValue]];
return [cal dateFromComponents:comp];
}
I have a webservice that returns the date in this format:
2013-04-14
How do i figure out what day this corresponds to?
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.
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);
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]);
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];
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.
This question already has answers here:
Retrieving current local time on iPhone?
(7 answers)
Closed 9 years ago.
I just noticed that NSDate *nowDate = [NSDate date]; gives me GMT+0 Time and not the local time. So basically on my iPad it's 13:00 and the output of this code is 12:00.
How do I get local time properly?
Give it a Shot !
NSDate* sourceDate = [NSDate date];
NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithAbbreviation:#"GMT"];
NSTimeZone* destinationTimeZone = [NSTimeZone systemTimeZone];//use `[NSTimeZone localTimeZone]` if your users will be changing time-zones.
NSInteger sourceGMTOffset = [sourceTimeZone secondsFromGMTForDate:sourceDate];
NSInteger destinationGMTOffset = [destinationTimeZone secondsFromGMTForDate:sourceDate];
NSTimeInterval interval = destinationGMTOffset - sourceGMTOffset;
NSDate* destinationDate = [[[NSDate alloc] initWithTimeInterval:interval sinceDate:sourceDate] autorelease];
It will give you the time according to the current system timezone.
NSDate does not care about timezones. It simply records a moment in time.
You should set the local timezone when using the NSDateFormatter to get a string representation of the date:
NSDate *date = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterMediumStyle];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle]; // Set date and time styles
[dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
NSString *dateString = [dateFormatter stringFromDate:date];
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
[calendar setTimeZone:[NSTimeZone localTimeZone]];
NSDateComponents *dateComponents = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit fromDate:[NSDate date]];
NSDate *d = [calendar dateFromComponents:dateComponents];
// get current date/time
NSDate *today = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
// display in 12HR/24HR (i.e. 11:25PM or 23:25) format according to User Settings
[dateFormatter setTimeStyle:NSDateFormatterShortStyle];
NSString *currentTime = [dateFormatter stringFromDate:today];
[dateFormatter release];
NSLog(#"%#",currentTime);