I trying to fetch the time from the phone's clock but am not able to fetch using this code
NSDate *today = [NSDate date];
NSCalendar *gregorian = [[NSCalendar alloc]
initWithCalendarIdentifier:NSGregorianCalendar];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger second = [components second];
Use This
NSDate *today = [NSDate date];
NSCalendar *gregorian = [[NSCalendar alloc]
initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components =
[gregorian components:(NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit) fromDate:today];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger second = [components second];
You missed a line in the code.
Related
I want to fire a notification at 10PM(irrespective of country) every week. Do i need to use timeZone. Currently I am using below code to fire notification for every week but there how to fire notification exactly at 10PM.
NSDate *date = [NSDate date];
NSDate* myNewDate = [date dateByAddingTimeInterval:7*24*60*60];
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = myNewDate;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSWeekCalendarUnit;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
[localNotification release];
I would think that setting your fireDate to 22:00 on the day you want to get the notification (rather than "a week from now") would do what you want. You'll probably want to use NSCalendar to do that.
NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
NSDate *currentDate = [NSDate date];
NSDate *fireDate = nil;
[dateComponents setDay:3]; // ...or whatever day.
[dateComponents setHour:22];
[dateComponents setMinute:0];
fireDate = [gregorian dateByAddingComponents:dateComponents
toDate:currentDate
options:0];
[localNotification setFireDate:fireDate];
[dateComponents release];
I made these changes and it worked...
NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
NSDate *currentDate = [NSDate date];
NSDate *fireDate = nil;
//Getting current Hour
NSDateComponents *components = [[NSCalendar currentCalendar] components:(kCFCalendarUnitHour | kCFCalendarUnitMinute) fromDate:currentDate];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
[dateComponents setDay:7];//After 1 week
[dateComponents setHour:22-hour-1]; //Calculating Remaining time for 10PM && "-1" because i am adding 60 min
[dateComponents setMinute:60-minute];
//Adding remaining time to current Time
fireDate = [[NSCalendar currentCalendar] dateByAddingComponents:dateComponents
toDate:currentDate
options:0];
[localNotification setFireDate:fireDate];
I want to display the Current week in UINavigationBar and then click on Next or Previous button to display the Previous week or Next week
Example:
July 22 - July 28
July 29 - Auguest 4
To get first date of the week you can do something like this :
- (NSDate *)firstDayOfWeekFromDate:(NSDate *)date {
CFCalendarRef currentCalendar = CFCalendarCopyCurrent();
NSDateComponents *components = [CURRENT_CALENDAR components:DATE_COMPONENTS fromDate:date];
[components setDay:([components day] - ([components weekday] - CFCalendarGetFirstWeekday(currentCalendar)))];
//[components setDay:(CFCalendarGetFirstWeekday(currentCalendar))];
[components setHour:0];
[components setMinute:0];
[components setSecond:0];
CFRelease(currentCalendar);
return [CURRENT_CALENDAR dateFromComponents:components];
}
After getting first week of the day you can calculate days as suggested in above answer by #vikas
:)
NSDate * selectedDate = [NSDate date];
-(IBAction)Week_CalendarActionEvents:(id)sender{
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents *offsetComponents = [[[NSDateComponents alloc] init] autorelease];
NSDate *nextDate;
if(sender==Week_prevBarBtn) // Previous button events
[offsetComponents setDay:-7];
else if(sender==Week_nextBarBtn) // next button events
[offsetComponents setDay:7];
nextDate = [gregorian dateByAddingComponents:offsetComponents toDate:selectedDate options:0];
selectedDate = nextDate;
[selectedDate retain];
NSDateComponents *components = [gregorian components:NSWeekCalendarUnit fromDate:selectedDate];
NSInteger week = [components week];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"MMMM YYYY"];
NSString *stringFromDate = [formatter stringFromDate:selectedDate];
[formatter release];
[Week_weekBarBtn setTitle:[NSString stringWithFormat:#"%#,Week %d",stringFromDate,week]];
}
I am new to iphone.I am doing one project in that project i am struck in the concept of getting week startdate and week enddate of iphone calendar from my application.If anybody know this concept please help me...
Here, I am position code. See it that will help you.
NSDate *today = [NSDate date];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd"];// you can use your format.
NSString *dateString = [dateFormat stringFromDate:today];
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [gregorian components:NSWeekdayCalendarUnit | NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:today];
int dayofweek = [[[NSCalendar currentCalendar] components:NSWeekdayCalendarUnit fromDate:today] weekday];// this will give you current day of week
[components setDay:([components day]-(dayofweek))];// for beginning of the week.
// or
[components setDay:([components day]+(7-dayofweek))];// for end day of the week
NSDate *beginningOfWeek = [gregorian dateFromComponents:components];
NSDateFormatter *dateFormat_first = [[NSDateFormatter alloc] init];
[dateFormat_first setDateFormat:#"yyyy-MM-dd"];
NSString *dateString2 = [dateFormat stringFromDate:beginningOfWeek];
Hope, this will help you...
This will help you
NSCalendar *cal = [NSCalendar currentCalendar];
NSDateComponents *components = [cal components:( NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit ) fromDate:[[NSDate alloc] init]];
[components setHour:-[components hour]];
[components setMinute:-[components minute]];
[components setSecond:-[components second]];
NSDate *today = [cal dateByAddingComponents:components toDate:[[NSDate alloc] init] options:0]; //This variable should now be pointing at a date object that is the start of today (midnight);
[components setHour:-24];
[components setMinute:0];
[components setSecond:0];
NSDate *yesterday = [cal dateByAddingComponents:components toDate: today options:0];
components = [cal components:NSWeekdayCalendarUnit | NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:[[NSDate alloc] init]];
[components setDay:([components day] - ([components weekday] - 1))];
NSDate *thisWeek = [cal dateFromComponents:components];
[components setDay:([components day] - 7)];
NSDate *lastWeek = [cal dateFromComponents:components];
[components setDay:([components day] - ([components day] -1))];
NSDate *thisMonth = [cal dateFromComponents:components];
[components setMonth:([components month] - 1)];
NSDate *lastMonth = [cal dateFromComponents:components];
NSLog(#"today=%#",today);
NSLog(#"yesterday=%#",yesterday);
NSLog(#"thisWeek=%#",thisWeek);
NSLog(#"lastWeek=%#",lastWeek);
NSLog(#"thisMonth=%#",thisMonth);
NSLog(#"lastMonth=%#",lastMonth);
from Here
I want to fire a notification at 10PM(irrespective of country) every week. Do i need to use timeZone. Currently I am using below code to fire notification for every week but there how to fire notification exactly at 10PM.
NSDate *date = [NSDate date];
NSDate* myNewDate = [date dateByAddingTimeInterval:7*24*60*60];
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = myNewDate;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSWeekCalendarUnit;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
[localNotification release];
I would think that setting your fireDate to 22:00 on the day you want to get the notification (rather than "a week from now") would do what you want. You'll probably want to use NSCalendar to do that.
NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
NSDate *currentDate = [NSDate date];
NSDate *fireDate = nil;
[dateComponents setDay:3]; // ...or whatever day.
[dateComponents setHour:22];
[dateComponents setMinute:0];
fireDate = [gregorian dateByAddingComponents:dateComponents
toDate:currentDate
options:0];
[localNotification setFireDate:fireDate];
[dateComponents release];
I made these changes and it worked...
NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
NSDate *currentDate = [NSDate date];
NSDate *fireDate = nil;
//Getting current Hour
NSDateComponents *components = [[NSCalendar currentCalendar] components:(kCFCalendarUnitHour | kCFCalendarUnitMinute) fromDate:currentDate];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
[dateComponents setDay:7];//After 1 week
[dateComponents setHour:22-hour-1]; //Calculating Remaining time for 10PM && "-1" because i am adding 60 min
[dateComponents setMinute:60-minute];
//Adding remaining time to current Time
fireDate = [[NSCalendar currentCalendar] dateByAddingComponents:dateComponents
toDate:currentDate
options:0];
[localNotification setFireDate:fireDate];
NSDate *today = [NSDate date];
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
[calendar setTimeZone:[NSTimeZone timeZoneWithName:#"GMT+2"]];
NSDateComponents *dateComponents = [calendar components:(NSDayCalendarUnit | NSWeekdayCalendarUnit) fromDate:today];
NSInteger day = [dateComponents day];
NSInteger month = [dateComponents month];
NSInteger year = [dateComponents year];
NSLog(#" %i %i %i ", day, month, year);
That code show me "12 2147483647 2147483647"
How can I get the month and year (integer)
How can add/forward one day? (if we are the first of the month too!)
Thant you for your attention :-)
NSCalendar *calendar= [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSCalendarUnit unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
NSDate *date = [NSDate date];
NSDateComponents *dateComponents = [calendar components:unitFlags fromDate:date];
NSInteger year = [dateComponents year];
NSInteger month = [dateComponents month];
NSInteger day = [dateComponents day];
NSInteger hour = [dateComponents hour];
NSInteger minute = [dateComponents minute];
NSInteger second = [dateComponents second];
[calendar release];
hope this helps
Add more units to NSDayCalendarUnit | NSWeekdayCalendarUnit - you are not requesting month or year, therefore they are invalid!
Add/subtract a NSDateComponents object configured for 1 day and [NSCalendar dateByAddingComponents:toDate:options:]. Alternatively, and probably just as correct, use [NSDate dateWithTimeInterval:sinceDate:]