How to create event with NSDate

[SwiftySrl]

Hi developer;
I'm a developer as well, and I'm trying to implement inside JTCalendar some event taken from NsDate*dateSelected

In it I've some date in "dd/MM/yyyy HH:mm":

NSLog(@"%@",dateselected)
"2014-12-09 00:05:41.908 Database Demo[1348:31927] 2014-12-09 09:39:37 +0000
2014-12-09 00:05:41.911 Database Demo[1348:31927] 2014-12-14 09:32:26 +0000
2014-12-09 00:05:41.913 Database Demo[1348:31927] 2014-12-20 08:08:09 +0000"

When I try to implement the date of "dateSelected" in the eventsByDate[key], it makes just one event (the last one that I've insert in the dateSelected).

Here the code:

• (void)createEvents
  {
  eventsByDate = [NSMutableDictionary new];

  NSDate *myDate = dateSelected;
  
  NSString *key = [[self dateFormatter] stringFromDate:myDate];
  
  if(!eventsByDate[key]){
      eventsByDate[key] = [NSMutableArray new];
  }
  
  [eventsByDate[key] addObject:myDate];
  }
  

  }

Can you help me ???

Have a nice day......;)

[jonathantribouharet]

If your key for eventsByDate used a date format like "dd/MM/yyyy HH:mm" it's normal because this format contains the hours so you don't have the events sort by date but also by hours. It works in the Example, you don't need to change the format of the date, it's only used for get back your events and nothing else.

[SwiftySrl]

Ok i have change code in this:

• (void)createEvents
  {
  eventsByDate = [NSMutableDictionary new];

  NSDate * myDate= dateSelected;
  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  [dateFormatter setDateFormat:@"dd-MM-yyyy"];
  NSString *convertedString = [dateFormatter stringFromDate:myDate];
  NSLog(@"Converted String : %@",convertedString);
  NSDate * outDate = [dateFormatter dateFromString: convertedString];

  NSString *key = [[self dateFormatter] stringFromDate:outDate];

  if(!eventsByDate[key]){
      eventsByDate[key] = [NSMutableArray new];
  } 
  [eventsByDate[key] addObject:outDate];   
  

  }

---

NSLog(@"Converted String : %@",convertedString);

2014-12-09 14:31:21.104 Database Demo[3017:106606] Converted String : 09-12-2014
2014-12-09 14:31:21.106 Database Demo[3017:106606] Converted String : 11-12-2014
2014-12-09 14:31:21.108 Database Demo[3017:106606] Converted String : 17-12-2014

But the result is not changed,it creates only the last one that I've insert in the dateSelected.

[jonathantribouharet]

It's because you don't understand what you're doing. Each time you call createEvents you do eventsByDate = [NSMutableDictionary new]; so each time you reset eventsByDate. You have to loop on the array of events that you have in createEvents, juste replace my loop but keep the structure.

[SwiftySrl]

Ok i have insert a loop.This is a code:

• (void)createEvents
  {
  eventsByDate = [NSMutableDictionary new];
  prova=[[NSMutableArray alloc]init];
  [prova addObject:dateSelected]; //Add date into array
  for(int i = 0; i < [prova count]; ++i)
  {
  NSDate * str = [prova objectAtIndex: i];
  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  [dateFormatter setDateFormat:@"dd-MM-yyyy"];
  NSString *convertedString = [dateFormatter stringFromDate:str];
  NSDate * outDate = [dateFormatter dateFromString: convertedString];
  NSString *key = [[self dateFormatter] stringFromDate:outDate];

  if(!eventsByDate[key]){
  eventsByDate[key] = [NSMutableArray new];
  }

  [eventsByDate[key] addObject:key];  
  

  }
  }

What am I doing wrong?

[jonathantribouharet]

Like i said, you don't understand what you do, with this code you will only have dateSelected in eventsByDate. You have to have an array, call it prova if you want, which have to contains all your events BEFORE you call createEvents.
I recommend you to ask your question on stackoverflow, this doesn't concern my library.

[SwiftySrl]

Sorry but on stackOverflow they don't know your calendar.
To create events you use this code:

• (void)createRandomEvents
  {
  eventsByDate = [NSMutableDictionary new];

  for(int i = 0; i < 30; ++i){
  NSDate *randomDate = [NSDate dateWithTimeInterval:(rand() % (3600 * 24 * 60)) sinceDate:[NSDate date]];
  NSString *key = [[self dateFormatter] stringFromDate:randomDate];
  if(!eventsByDate[key]){
  eventsByDate[key] = [NSMutableArray new];
  }
  [eventsByDate[key] addObject:randomDate];
  }

}

I need to replace your RandomDate with my dates that are contained in NSDate.
How can I do this?

[jonathantribouharet]

Sorry but like i said it doesn't depend of my calendar, it's not related.

[artemkalinovsky]

I've checked out how to do this!