Re: Deleting CalTasks through an Array.
Hi Joshua,
You're welcome, but you need to also learn some stuff on your own.
1. Browse the docs: NSArray does not have a contains: method, it has a
containsObject: method. My mistake, but one that's easy to spot.
2. Check the method signatures for CalCalendar store. I believe I gave
you the right ones (in which case your imports are somehow messed up).
If I gave you the wrong ones, change them.
Also please keep all communication *on* the list.
F
On Oct 01, 2009, at 01:54, Joshua Garnham wrote:
Thanks!
I've got a few warnings though : http://snapplr.com/zm6w.
Especially with the NSPredicate.
From: Stamenkovic Florijan flor...@mac.com
To: Joshua Garnham joshua.garn...@yahoo.co.uk
Cc: cocoa-dev@lists.apple.com
Sent: Wednesday, 30 September, 2009 20:24:59
Subject: Re: Deleting CalTasks through an Array.
On Sep 30, 2009, at 12:32, Joshua Garnham wrote:
I have an Array of strings and want to remove CalTasks with titles
of any of the strings.
I know I can loop through a array with
for(NSString *title in array) {
}
and delete tasks with
removeTask:title error:nil
But it won't let me delete a CalTask object with the strings from
the Array instead it wants the actual CalTask object.How would I
delete a CalTask object by matching it's title to a string in an
array?
Joshua,
You need to use CalCalendarStore's method
taskPredicateWithCalendar, passing it all calendars to get the
tasks, then compare titles and delete if necessary.
// make a predicate for all tasks
NSPredicate* allCalendarsTaskPredicate = [CalCalendarStore
taskPredicateWithCalendar:[CalCalendarStore calendars]];
// fetch all the tasks
NSArray* allTasks = [[CalCalendarStore defaultCalendarStore]
tasksWithPredicate:allCalendarsTaskPredicate];
// delete them
for(CalTask* task in allTasks)
if([arrayOfTitles contains:tast.title])
// delete task
More or less... Sorry for the typos, I am writing directly to mail.
What would be more efficient and *might* work is creating a compound
predicate out of the allTasks predicate and a predicate that would
discriminate tasks that don't have a matching title. However, I am
not sure that predicate would work with the CalendarStore. Something
to explore if the performance is an issue.
HTH
F
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Re: Deleting CalTasks through an Array.
Hi,
Thanks, It works now I've fixed the warnings.
Cheers.
From: Stamenkovic Florijan flor...@mac.com
To: Joshua Garnham joshua.garn...@yahoo.co.uk
Cc: cocoa-dev cocoa-dev@lists.apple.com
Sent: Thursday, 1 October, 2009 13:32:20
Subject: Re: Deleting CalTasks through an Array.
Hi Joshua,
You're welcome, but you need to also learn some stuff on your own.
1. Browse the docs: NSArray does not have a contains: method, it has a
containsObject: method. My mistake, but one that's easy to spot.
2. Check the method signatures for CalCalendar store. I believe I gave you the
right ones (in which case your imports are somehow messed up). If I gave you
the wrong ones, change them.
Also please keep all communication *on* the list.
F
On Oct 01, 2009, at 01:54, Joshua Garnham wrote:
Thanks!
I've got a few warnings though : http://snapplr.com/zm6w.
Especially with the NSPredicate.
From: Stamenkovic Florijan flor...@mac.com
To: Joshua Garnham joshua.garn...@yahoo.co.uk
Cc: cocoa-dev@lists.apple.com
Sent: Wednesday, 30 September, 2009 20:24:59
Subject: Re: Deleting CalTasks through an Array.
On Sep 30, 2009, at 12:32, Joshua Garnham wrote:
I have an Array of strings and want to remove CalTasks with titles of any
of the strings.
I know I can loop through a array with
for(NSString *title in array) {
}
and delete tasks with
removeTask:title error:nil
But it won't let me delete a CalTask object with the strings from the Array
instead it wants the actual CalTask object.How would I delete a CalTask
object by matching it's title to a string in an array?
Joshua,
You need to use CalCalendarStore's method taskPredicateWithCalendar,
passing it all calendars to get the tasks, then compare titles and delete if
necessary.
// make a predicate for all tasks
NSPredicate* allCalendarsTaskPredicate = [CalCalendarStore
taskPredicateWithCalendar:[CalCalendarStore calendars]];
// fetch all the tasks
NSArray* allTasks = [[CalCalendarStore defaultCalendarStore]
tasksWithPredicate:allCalendarsTaskPredicate];
// delete them
for(CalTask* task in allTasks)
if([arrayOfTitles contains:tast.title])
// delete task
More or less... Sorry for the typos, I am writing directly to mail.
What would be more efficient and *might* work is creating a compound
predicate out of the allTasks predicate and a predicate that would
discriminate tasks that don't have a matching title. However, I am not sure
that predicate would work with the CalendarStore. Something to explore if the
performance is an issue.
HTH
F
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Deleting CalTasks through an Array.
I have an Array of strings and want to remove CalTasks with titles of any of
the strings.
I know I can loop through a array with
for(NSString *title in array) {
}
and delete tasks with
removeTask:title error:nil
But it won't let me delete a CalTask object with the strings from the Array
instead it wants the actual CalTask object.How would I delete a CalTask object
by matching it's title to a string in an array?
Cheers.
___
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Re: Deleting CalTasks through an Array.
On 30 Sep 2009, at 17:32, Joshua Garnham wrote:
I have an Array of strings and want to remove CalTasks with titles
of any of the strings.
I know I can loop through a array with
for(NSString *title in array) {
}
and delete tasks with
removeTask:title error:nil
But it won't let me delete a CalTask object with the strings from
the Array instead it wants the actual CalTask object.How would I
delete a CalTask object by matching it's title to a string in an
array?
The API accepts CalTask objects. Logically then you need to fetch such
objects from the store using the APIs provided. i.e. -
tasksWithPredicate:
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Re: Deleting CalTasks through an Array.
On Sep 30, 2009, at 12:32, Joshua Garnham wrote:
I have an Array of strings and want to remove CalTasks with titles
of any of the strings.
I know I can loop through a array with
for(NSString *title in array) {
}
and delete tasks with
removeTask:title error:nil
But it won't let me delete a CalTask object with the strings from
the Array instead it wants the actual CalTask object.How would I
delete a CalTask object by matching it's title to a string in an
array?
Joshua,
You need to use CalCalendarStore's method taskPredicateWithCalendar,
passing it all calendars to get the tasks, then compare titles and
delete if necessary.
// make a predicate for all tasks
NSPredicate* allCalendarsTaskPredicate = [CalCalendarStore
taskPredicateWithCalendar:[CalCalendarStore calendars]];
// fetch all the tasks
NSArray* allTasks = [[CalCalendarStore defaultCalendarStore]
tasksWithPredicate:allCalendarsTaskPredicate];
// delete them
for(CalTask* task in allTasks)
if([arrayOfTitles contains:tast.title])
// delete task
More or less... Sorry for the typos, I am writing directly to mail.
What would be more efficient and *might* work is creating a compound
predicate out of the allTasks predicate and a predicate that would
discriminate tasks that don't have a matching title. However, I am not
sure that predicate would work with the CalendarStore. Something to
explore if the performance is an issue.
HTH
F
___
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