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Retrieving specific iOS Calendar events

Posted on 2013-01-18
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Last Modified: 2013-01-23
I need to retrieve all iOS events, from all calendars, with a predefined location string of "Office", then write the result to the NSLog and a UITextView.

Here is my code thus far:

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

@synthesize eventStore = _eventStore;
@synthesize events     = _events;
@synthesize eventTextView;

- (void)viewDidLoad
{
   
    // Store a reference to the event store
    EKEventStore *eventStore = [[EKEventStore alloc] init];
   
    [eventStore requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
        // handle access here
        if (granted)
            NSLog (@"Access granted");
    }];
    self.eventStore = eventStore;
   
    // Define a range of event dates we want to display
   
    NSDate *startDate = [NSDate dateWithTimeIntervalSinceNow:(-1*60*60)]; // 1 hour in the past
    NSDate *endDate   = [NSDate dateWithTimeIntervalSinceNow:(60*60*24*365)]; // 1 year from now
   
    // Create a predicate to search all celndars with our date range
   
    NSPredicate *predicate = [self.eventStore predicateForEventsWithStartDate:startDate
    endDate:endDate calendars:nil];
   
   
    // Query the event store using the predicate.
   
    NSArray *results       = [self.eventStore eventsMatchingPredicate:predicate];
   
    //Convert the results to a mutable array and store so we can implement swipe to delete
   
    NSMutableArray *events = [[NSMutableArray alloc] initWithArray:results];
    self.events = events;


    // Load the events from the event store
    //[self reloadEvents:nil];
   
    [super viewDidLoad];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void) reloadEvents:(id)sender
{
   }

- (IBAction)getEvents:(id)sender {
   
    int i;
    int eventCount;
   
    eventCount = [self.events count];
   
    for (i = 0; i < eventCount; i++){
       
        self.eventTextView.text = [[self.events objectAtIndex: i]title], [[self.events objectAtIndex: i]startDate], [[self.events objectAtIndex: i]endDate], [[self.events objectAtIndex: i]location];
       
       
        NSLog (@"Event Title: %@, Event Start Date: %@, Event End Date: %@, Event Location: %@",[[self.events objectAtIndex: i]title],
            [[self.events objectAtIndex: i]startDate],
            [[self.events objectAtIndex: i]endDate],
            [[self.events objectAtIndex: i]location]);
    }
   
}
@end

Also, l gather that you can subscribe to the event store for notifications / changes to the calendar/s? How would this work in the context of the above? I am assuming that this would take the place of the button action, especially if the application was set to enter the background?
0
Comment
Question by:Greg_Arden
2 Comments
 
LVL 14

Accepted Solution

by:
binaryevo earned 500 total points
Comment Utility
If I remember correctly, and if I understand your question, this code should give you what you are looking for:

Return all calendars
NSArray *calList = [eventStore calendars];

Open in new window


Then you could slap that in a for loop and should be able to do a:

NSString *searchTitle = @"myTitle";
NSLog(@"Test Cal Event Thing: %@", [[calList objectAtIndex:index] searchTitle]);

Open in new window


Give that a shot.  Hope this helps!
0
 

Author Closing Comment

by:Greg_Arden
Comment Utility
Thank you. I actually had a fresh look at this, and although what l implemented had a few additional features (NSDate formatting to NSString, converting the location string to all lowercase characters, in principal your suggestion is essentially what l implemented.
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