#import <UIKit/UIKit.h>
#import <EventKit/EventKit.h>
#import <EventKitUI/EventKitUI.h>
@interface ViewController : UIViewController<UITableViewDelegate, UITableViewDataSource, EKEventEditViewDelegate, UIAlertViewDelegate>
@property (strong, nonatomic) EKEventStore *eventStore;
@property (weak, nonatomic) IBOutlet UITableView *eventsTableView;
@property (nonatomic, strong) NSMutableDictionary *events;
@property (nonatomic, strong) NSArray *calendars;
@end
1 //
2 // ViewController.m
3 // My Events App
4 //
5 // Created by Hans-Eric Grönlund on 8/27/12.
6 // Copyright (c) 2012 Hans-Eric Grönlund. All rights reserved.
7 //
8
9 #import "ViewController.h"
10
11 @interface ViewController ()
12
13 @end
14
15 @implementation ViewController
16
17 - (void)viewDidLoad
18 {
19 [super viewDidLoad];
20 self.title = @"Events";
21 UIBarButtonItem *refreshButton = [[UIBarButtonItem alloc]
22 initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self
23 action:@selector(refresh:)];
24 self.navigationItem.leftBarButtonItem = refreshButton;
25
26 UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addEvent:)];
27 self.navigationItem.rightBarButtonItem = addButton;
28
29 self.eventsTableView.delegate = self;
30 self.eventsTableView.dataSource = self;
31
32 self.eventStore = [[EKEventStore alloc] init];
33
34 [self.eventStore requestAccessToEntityType:EKEntityTypeEvent
35 completion:^(BOOL granted, NSError *error)
36 {
37 if (granted)
38 {
39 self.calendars =
40 [self.eventStore calendarsForEntityType:EKEntityTypeEvent];
41 [self fetchEvents];
42 }
43 else
44 {
45 NSLog(@"Access not granted: %@", error);
46 }
47 }];
48 }
49
50 - (void)refresh:(id)sender
51 {
52 [self fetchEvents];
53 [self.eventsTableView reloadData];
54 }
55
56 - (void)fetchEvents
57 {
58 self.events = [[NSMutableDictionary alloc] initWithCapacity:[self.calendars count]];
59
60 NSDate * now = [NSDate date];
61 NSCalendar * calendar = [NSCalendar currentCalendar];
62
63 NSDateComponents * fortyEightHoursFromNowComponents =
64 [[NSDateComponents alloc] init];
65 fortyEightHoursFromNowComponents.day = 2; // 48 hours forward
66 NSDate * fortyEightHoursFromNow =
67 [calendar dateByAddingComponents:fortyEightHoursFromNowComponents toDate:now
68 options:0];
69
70
71
72 for (EKCalendar * calendar in self.calendars)
73 {
74 NSPredicate * allEventsWithin48HoursPredicate =
75 [self.eventStore predicateForEventsWithStartDate:now
76 endDate:fortyEightHoursFromNow calendars:@[calendar]];
77 NSArray * eventsInThisCalendar =
78 [self.eventStore eventsMatchingPredicate:allEventsWithin48HoursPredicate];
79 if (eventsInThisCalendar != nil)
80 {
81 [self.events setObject:eventsInThisCalendar forKey:calendar.title];
82 }
83 }
84 dispatch_async(dispatch_get_main_queue(),^{
85 [self.eventsTableView reloadData];
86 });
87 }
88
89 - (void)addEvent:(id)sender
90 {
91 UIAlertView * inputAlert = [[UIAlertView alloc] initWithTitle:@"New Event" message:@"Enter a title for the event" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil];
92 inputAlert.alertViewStyle = UIAlertViewStylePlainTextInput;
93 [inputAlert show];
94 }
95
96 - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
97 {
98 if (buttonIndex == 1)
99 {
100 // OK button tapped
101
102 // Calculate the date exactly one day from now
103 NSCalendar * calendar = [NSCalendar currentCalendar];
104 NSDateComponents * aDayFromNowComponents = [[NSDateComponents alloc] init];
105 aDayFromNowComponents.day = 1;
106 NSDate * now = [NSDate date];
107 NSDate * aDayFromNow = [calendar dateByAddingComponents:aDayFromNowComponents toDate:now options:0];
108
109 // Create the event
110 EKEvent * event = [EKEvent eventWithEventStore:self.eventStore];
111 event.title = [alertView textFieldAtIndex:0].text;
112 event.calendar = [self.eventStore defaultCalendarForNewEvents];
113 event.startDate = aDayFromNow;
114 event.endDate = [NSDate dateWithTimeInterval:60*60.0 sinceDate:event.startDate];
115
116 // Make it recur
117 EKRecurrenceRule *repeatEveryMondayAndTuesdayRecurrenceRule = [[EKRecurrenceRule alloc]
118 initRecurrenceWithFrequency:EKRecurrenceFrequencyDaily
119 interval:2
120 daysOfTheWeek:@[[EKRecurrenceDayOfWeek dayOfWeek:2], [EKRecurrenceDayOfWeek dayOfWeek:3]]
121 daysOfTheMonth:nil
122 monthsOfTheYear:nil
123 weeksOfTheYear:nil
124 daysOfTheYear:nil
125 setPositions:nil
126 end:[EKRecurrenceEnd recurrenceEndWithOccurrenceCount:20]];
127 event.recurrenceRules = @[repeatEveryMondayAndTuesdayRecurrenceRule];
128
129 // Save the event and update the table view
130 [self.eventStore saveEvent:event span:EKSpanThisEvent error:nil];
131 [self refresh:self];
132 }
133 }
134
135 - (EKCalendar *)calendarAtSection:(NSInteger)section
136 {
137 return [self.calendars objectAtIndex:section];
138 }
139
140 - (EKEvent *)eventAtIndexPath:(NSIndexPath *)indexPath
141 {
142 EKCalendar *calendar = [self calendarAtSection:indexPath.section];
143 NSArray *calendarEvents = [self eventsForCalendar:calendar];
144 return [calendarEvents objectAtIndex:indexPath.row];
145 }
146
147 - (NSArray *)eventsForCalendar:(EKCalendar *)calendar
148 {
149 return [self.events objectForKey:calendar.title];
150 }
151
152 -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
153 {
154 return [self.calendars count];
155 }
156
157 -(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
158 {
159 return [self calendarAtSection:section].title;
160 }
161
162 -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
163 {
164 EKCalendar *calendar = [self calendarAtSection:section];
165 return [self eventsForCalendar:calendar].count;
166 }
167
168 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
169 {
170 static NSString *CellIdentifier = @"Cell";
171
172 UITableViewCell *cell =
173 [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
174 if (cell == nil)
175 {
176 cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1
177 reuseIdentifier:CellIdentifier];
178 }
179
180 cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
181 cell.textLabel.backgroundColor = [UIColor clearColor];
182 cell.textLabel.font = [UIFont systemFontOfSize:19.0];
183
184 cell.textLabel.text = [self eventAtIndexPath:indexPath].title;
185
186 return cell;
187 }
188
189 -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
190 {
191 EKEventViewController *eventVC = [[EKEventViewController alloc] init];
192 eventVC.event = [self eventAtIndexPath:indexPath];
193 eventVC.allowsEditing = YES;
194 [self.navigationController pushViewController:eventVC animated:YES];
195 [tableView deselectRowAtIndexPath:indexPath animated:YES];
196 }
197
198 - (void)viewWillAppear:(BOOL)animated
199 {
200 [self refresh:self];
201 [super viewWillAppear:animated];
202 }
203
204 -(void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
205 {
206 EKEventEditViewController *eventEditVC = [[EKEventEditViewController alloc] init];
207 eventEditVC.event = [self eventAtIndexPath:indexPath];
208 eventEditVC.eventStore = self.eventStore;
209 eventEditVC.editViewDelegate = self;
210 [self presentViewController:eventEditVC animated:YES completion:nil];
211 }
212
213 -(void)eventEditViewController:(EKEventEditViewController *)controller didCompleteWithAction:(EKEventEditViewAction)action
214 {
215 [self dismissViewControllerAnimated:YES completion:nil];
216 }
217
218 -(EKCalendar *)eventEditViewControllerDefaultCalendarForNewEvents:
219 (EKEventEditViewController *)controller
220 {
221 return [self.eventStore defaultCalendarForNewEvents];
222 }
223
224 - (void)didReceiveMemoryWarning
225 {
226 [super didReceiveMemoryWarning];
227 // Dispose of any resources that can be recreated.
228 }
229
230 @end
