I am trying to make a simple alarm.
in this code portion a take the date from the pickerdate (a ONLY time picker).
and if the alarm is the current date before i add a day.
// ALARM UNO
// Set Allarme Uno
-(void)viewDidAppear:(BOOL)animated{
NSDate *pickerDate = [NSDate date];
NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
// Break the date up into components
NSDateComponents *dateComponents = [calendar components:( NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit )
fromDate:pickerDate];
NSDateComponents *timeComponents = [calendar components:( NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit )
fromDate:pickerDate];
// Set up the fire time
NSDateComponents *dateComps = [[NSDateComponents alloc] init];
[dateComps setDay:[dateComponents day]];
[dateComps setMonth:[dateComponents month]];
[dateComps setYear:[dateComponents year]];
[dateComps setHour:[timeComponents hour]];
//Notification will fire in one minute
[dateComps setMinute:[timeComponents minute]];
[dateComps setSecond:0];
NSDate *itemDate = [calendar dateFromComponents:dateComps];
[dateComps release];
[alarmDatePickerUno setDate:itemDate animated:YES];
}
-(IBAction)setAlarmUno:(id)sender{
NSLog(#"picker in allarme");
NSDateFormatter *formatter =
[[[NSDateFormatter alloc] init] autorelease];
[formatter setTimeStyle:NSDateFormatterMediumStyle];
NSCalendar *currentCalendar = [NSCalendar currentCalendar];
AlarmDateUno = [alarmDatePickerUno date];
NSLog(#"allarme settata alle");
NSLog(#"%#", AlarmDateUno);
if ([alarmDatePickerUno.date compare:[NSDate date]] == NSOrderedAscending)
{
NSLog(#"Date is not valid");
NSDateComponents *oneDay = [[NSDateComponents alloc] init];
[oneDay setDay:1];
NSLog(#"Aggiungo un giorno");
AlarmDateUno = [currentCalendar dateByAddingComponents:oneDay toDate:AlarmDateUno options:0];
NSLog(#"%#", AlarmDateUno);
//return;
}
After that i compare the current date with the alarm...
// CONTROLLO TEMPO UNO
- (void)runTimerUno {
myTickerUno = [NSTimer scheduledTimerWithTimeInterval: 0.5
target: self
selector: #selector(showActivityUno)
userInfo: nil
repeats: YES];
}
- (void)showActivityUno {
// NSDate *date = [NSDate date];
if(isAlarmUnoOn == 1 && AlarmUnoPlaying ==0){
NSLog(#"Confronto data e tempo");
if ([[[NSDate date] earlierDate:AlarmDateUno] isEqualToDate: AlarmDateUno])
{
AlarmUnoPlaying = 1;
[self playAlarmSoundUno];
}
}
}
That's the problem in the date in the picker view was before the current time and i add an hours i receive an EXC_BAD_ACCESS error at the line:
if ([[[NSDate date] earlierDate:AlarmDateUno] isEqualToDate: AlarmDateUno])
Zombie say me
[__NSDate timeIntervalSinceReferenceDate]: message sent to deallocated instance 0x914b710
i try every things and i don't understand why.... anyone can help me please?
It appears that AlarmDateUno is a property. Is that correct? If so, you need to retain it whenever you set it - otherwise, it may be deallocated before you try to access it again.
Related
I'm writing an application based on UILocalNotifications. I having the user input a time on a date picker and that time will represent when the last UILocalNotification will fire. After the user hits a UIButton UILocalNotifications will fire based on a time interval until the time they selected occurs, then the app will stop.
I schedule the maximum number of UILocalNotifications before the user inputs a time. Is there a way to cancel the UILocalNotifications that are scheduled after the user's input time, based on time? Or is there a way to cancel all scheduled notifications after the inputted notification fires? The code is setting the last timer and the first timer based of the input time. Thanks for the help.
NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
NSDate *pickerDate = [self.datePicker date];
NSDateComponents *dateComponents = [calendar components:( NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit )
fromDate:pickerDate];
NSDateComponents *timeComponents = [calendar components:( NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit )
fromDate:pickerDate];
NSDateComponents *dateComps = [[NSDateComponents alloc] init];
[dateComps setDay:[dateComponents day]];
[dateComps setMonth:[dateComponents month]];
[dateComps setYear:[dateComponents year]];
[dateComps setHour:[timeComponents hour]];
[dateComps setMinute:[timeComponents minute]];
[dateComps setSecond:0];
NSDate *itemDate = [calendar dateFromComponents:dateComps];
/**************Setting the final alarm*********************/
UILocalNotification *finalAlarm = [[UILocalNotification alloc] init];
if (finalAlarm) {
finalAlarm.fireDate = itemDate;
finalAlarm.timeZone = [NSTimeZone defaultTimeZone];
finalAlarm.repeatInterval = 0;
finalAlarm.soundName = UILocalNotificationDefaultSoundName;
finalAlarm.alertBody = #"Test message...";
[[UIApplication sharedApplication] scheduleLocalNotification:finalAlarm];
}
//Formatting original date in the date picker for readability
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"HH"];
NSString *formattedDateString = [dateFormatter stringFromDate:datePicker.date];
//isolate current date/time
NSDate *currentDate = [NSDate date];
//formatting the current date for readability
[dateFormatter setDateFormat:#"HH"];
NSString *currentForamttedDate = [dateFormatter stringFromDate:currentDate];
//current hour
int currentHour = [currentForamttedDate intValue];
/**************Setting the first alarm*********************/
//current hour plus 2
int firstAlarmHour = currentHour + 2;
//creating the first alarm
NSDateComponents *firstAlarm = [[NSDateComponents alloc]init];
[firstAlarm setDay:[dateComponents day]];
[firstAlarm setMonth:[dateComponents month]];
[firstAlarm setYear:[dateComponents year]];
[firstAlarm setHour:firstAlarmHour];
[firstAlarm setMinute:[dateComponents minute]];
[firstAlarm setSecond:0];
//creating a date from the components
NSDate *firstAlarmDate = [calendar dateFromComponents:firstAlarm];
//setting the first alarm
[self scheduleNotificationForDate: firstAlarmDate];
You can use the following code to get all the notifications and then cancel them based on your specifications.
if ([[UIApplication sharedApplication].scheduledLocalNotifications count] > 1){
for (int i = 0; i < [[UIApplication sharedApplication].scheduledLocalNotifications count]; i++){
UILocalNotification * notification = [[UIApplication sharedApplication].scheduledLocalNotifications objectAtIndex:i];
if (/* if after your fire date */){
[[UIApplication sharedApplication] cancelLocalNotification:notification];
}
}
}
I have a local notification set to fire on the specified date when a user changes the date
on a UIDatePicker. However, when I ran the app, the notification fired correctly, but when
I went and made a small change, then ran it again, the notification didn't fire. Here's my
code, please help!
NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
// Get the current date
NSDate *pickerDate = [datepicker date];
// Break the date up into components
NSDateComponents *dateComponents = [calendar components:( NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit )
fromDate:pickerDate];
NSDateComponents *timeComponents = [calendar components:( NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit )
fromDate:pickerDate];
// Set up the fire time
NSDateComponents *dateComps = [[NSDateComponents alloc] init];
[dateComps setDay:[dateComponents day]];
[dateComps setMonth:[dateComponents month]];
[dateComps setYear:[dateComponents year]];
[dateComps setHour:[timeComponents hour]];
[dateComps setMinute:[timeComponents minute]];
[dateComps setSecond:[timeComponents second]];
NSDate *itemDate = [calendar dateFromComponents:dateComps];
[dateComps release];
UILocalNotification *localNotif = [[UILocalNotification alloc] init];
if (localNotif == nil)
return;
localNotif.fireDate = itemDate;
localNotif.timeZone = [NSTimeZone defaultTimeZone];
// Notification details
localNotif.alertBody = #"Timer";
// Set the action button
localNotif.alertAction = #"View";
I can't seem to figure out why this notification is not scheduling on Saturdays... I've tried both NSGregorianCalendar and autoupdatingCurrentCalendar. I'm setting [dateComps setWeekday:7];, but it keeps returning Sundays.
//NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *timeComponent = [calendar components:( NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit ) fromDate:reminderTime];
// Set up the fire time
NSDateComponents *dateComps = [[NSDateComponents alloc] init];
[dateComps setYear: 2012];;
[dateComps setHour: timeComponent.hour];
[dateComps setMinute: timeComponent.minute];
[dateComps setSecond:0];
// Set day of the week
[dateComps setWeekday:7];
NSDate *itemDate = [calendar dateFromComponents:dateComps];
UILocalNotification *notification = [[UILocalNotification alloc] init];
if (notification == nil)
return;
notification.fireDate = itemDate;
notification.repeatInterval = NSWeekCalendarUnit;
dateComps as you calculate it, does not contain a day or month so that setWeekday is just ignored and itemDate is a date on the first January 2012 (which was a Sunday).
To compute the next Saturday, you can proceed as described in Adding Components to a Date of the "Date and Time Programming Guide":
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
// Weekday of "reminderTime":
NSDateComponents *weekdayComponents = [calendar components:NSWeekdayCalendarUnit fromDate:reminderTime];
// Number of weekdays until next Saturday:
NSDateComponents *componentsToAdd = [[NSDateComponents alloc] init];
[componentsToAdd setDay: 7 - [weekdayComponents weekday]];
NSDate *itemDate = [calendar dateByAddingComponents:componentsToAdd toDate:reminderTime options:0];
I was wondering how I would edit the dateComps setDay: to go off 3 days before the date set in the picker. I typed in -3, but that doesn't seem to do the trick.
Any help is much appreciated! Here is my code:
- (IBAction)scheduleNotifButton:(id)sender {
NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
NSDate *pickerDate = [self.datePicker date];
NSDateComponents *dateComponents = [calendar components:( NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit )
fromDate:pickerDate];
NSDateComponents *timeComponents = [calendar components:( NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit )
fromDate:pickerDate];
NSDateComponents *dateComps = [[NSDateComponents alloc] init];
[dateComps setDay:[dateComponents day]];
[dateComps setMonth:[dateComponents month]];
[dateComps setYear:[dateComponents year]];
[dateComps setHour:13];
[dateComps setMinute:30];
[dateComps setSecond:[timeComponents second]];
NSDate *itemDate = [calendar dateFromComponents:dateComps];
UILocalNotification *localNotif = [[UILocalNotification alloc] init];
if (localNotif == nil)
return;
localNotif.fireDate = itemDate;
localNotif.timeZone = [NSTimeZone defaultTimeZone];
localNotif.alertBody = #"Event is in 3 days!";
localNotif.alertAction = nil;
localNotif.soundName = UILocalNotificationDefaultSoundName;
localNotif.applicationIconBadgeNumber = 0;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
}
When you say you have typed -3, do you mean you used this line?
[dateComps setDay:[dateComponents day] - 3];
This should in fact work.
Also, you can tell the system to fire any next year by just settings the current year to the date components. You can find the current year just the way you found the date components for pickerDate.
After that, you can set the repeatInterval of the local notification to NSYearCalendarUnit, that way it will fire each year.
Here is a code to subtract 3 days from Today(NOW). You can adapt it for your needs:
NSDate *today = [NSDate date];
NSLog(#"NOW:%#",today);
NSCalendar *gregorian = [[NSCalendar alloc]initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *todayComps = [gregorian components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit |NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit fromDate:today];
todayComps.day -=3;
NSDate *dateMinus3Days = [gregorian dateFromComponents:todayComps];
NSLog(#"3 days before NOW:%#",dateMinus3Days);
Your making it too complicated. DateComponents can be modified and then set to a new date.
I think all you need to do is subtract 3 days from the date returned by the date picker, no?
NSDate *pickerDate = [self.datePicker date]
pickerDate = [ pickerDate dateByAddingTimeInterval:-3 * 24 * 60 * 60 ] ; // add this line
Version using date components:
- (IBAction)scheduleNotifButton:(id)sender {
NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
NSDate *pickerDate = [self.datePicker date];
{
NSDateComponent * deltaComponents = [ [ NSDateComponents alloc ] init ];
deltaComponents.days = -3 ;
pickerDate = [ pickerDate dateByAddingComponents:deltaComponents ] ;
}
NSDateComponents *dateComponents = [calendar components:( NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit ) fromDate:pickerDate];
[dateComps setHour:13];
[dateComps setMinute:30];
NSDate *itemDate = [calendar dateFromComponents:dateComps];
UILocalNotification *localNotif = [[UILocalNotification alloc] init];
if (localNotif == nil)
return;
localNotif.fireDate = itemDate;
localNotif.timeZone = [NSTimeZone defaultTimeZone];
localNotif.alertBody = #"Event is in 3 days!";
localNotif.alertAction = nil;
localNotif.soundName = UILocalNotificationDefaultSoundName;
localNotif.applicationIconBadgeNumber = 0;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
}
Use dateByAddingComponents:toDate:options:
// ...
NSDateComponents *offset = [NSDateComponents new];
[offset setDay:(-3)];
NSDate *date3DaysBefore = [calendar dateByAddingComponents:offset toDate:pickerDate options:0];
// ...
I want to make an NSDate object which has the date set as the current date, but the time set as the time in the datepicker (because the datepicker's mode is the time one). How can i do this?
and if you really want to use a custom date use something like this.
- (IBAction)dpChange:(UIDatePicker *)sender {
// replace this with your custom date.
NSDate *myCustomDate = [NSDate dateWithTimeIntervalSinceNow:7*24*60*60];
NSInteger dateFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit;
NSDateComponents *dateComponents = [[NSCalendar currentCalendar] components:dateFlags fromDate:myCustomDate];
NSDate *myCustomTime = [sender date];
NSInteger timeFlags = NSHourCalendarUnit | NSMinuteCalendarUnit;
NSDateComponents *timeComponents = [[NSCalendar currentCalendar] components:timeFlags fromDate:myCustomTime];
NSDateComponents *newComponents = [[[NSDateComponents alloc] init] autorelease];
[newComponents setYear:[dateComponents year]];
[newComponents setMonth:[dateComponents month]];
[newComponents setDay:[dateComponents day]];
[newComponents setHour:[timeComponents hour]];
[newComponents setMinute:[timeComponents minute]];
[newComponents setSecond:0];
NSDate *newDate = [[NSCalendar currentCalendar] dateFromComponents:newComponents];
NSLog(#" Date: %#", myCustomDate);
NSLog(#" Time: %#", myCustomTime);
NSLog(#"Combined: %#", newDate);
}