StackOverflow2013

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copied!<ol> <li><p>Define a class which implements the <code>KalDataSource</code> protocol. See below example for class implementing <code>KalDataSource</code> protocol.</p> <pre><code>//header file #import Kal.h" @interface MyClass : NSObject <KalDataSource> @property (nonatomic, weak) id<KalDataSourceCallbacks> kalCallbackDelegate; @property (nonatomic, strong) NSArray *events; @end ---------------------- //implementation file - (void)presentingDatesFrom:(NSDate *)fromDate to:(NSDate *)toDate delegate:(id<KalDataSourceCallbacks>)callbackDelegate { //If you already have the events between fromDate and toDate then just call [callbackDelegate loadedDataSource:self]; //Else store the callback variable in a property and do an asyncrhonous //call to load the events. self.kalCallbackDelegate = callbackDelegate; //When the Asynchronous call is done, call [self.kalCallbackDelgate loadedDataSource:self]; } - (void)removeAllItems { self.eventsForDay = nil; } - (NSArray *)markedDatesFrom:(NSDate *)fromDate to:(NSDate *)toDate { //self.events may have multiple events with the same date. This pulls only the unique dates. //Also assumes that the object has an eventDate property for the beginning of the day NSMutableSet *uniqueDatesSet = [NSMutableSet setWithArray:[self.events valueForKeyPath:@"@distinctUnionOfObjects.eventDate"]]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"self >= %@ && self <= %@", fromDate, toDate]; NSArray *uniqueDates = [[uniqueDatesSet allObjects] filteredArrayUsingPredicate:predicate]; return uniqueDates; } - (void)loadItemsFromDate:(NSDate *)fromDate toDate:(NSDate *)toDate { //filter for the events that occur between fromDate and toDate NSPredicate *predicate = [NSPredicate predicateWithFormat:@"eventDate >= %@ && eventDate <= %@", fromDate, toDate]; NSArray *filteredArray = [self.events filteredArrayUsingPredicate:predicate]; self.eventsForDay = [filteredArray sortedArrayUsingSelector:@selector(compareByEventTime:)]; } </code></pre></li> <li><p>To render the UITableViewCells, implement <code>tableView:cellForRowAtIndexPath:</code> in your <code>KalDataSource</code> class just like you would for a <code>UITableView</code>.</p> <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { Event *event = [self.events objectAtIndex:indexPath.row]; static NSString *identifier = @"MyCell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier]; if (!cell) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier]; cell.selectionStyle = UITableViewCellSelectionStyleNone; } cell.textLabel.text = event.title; return cell; } </code></pre></li> <li><p>If you want to know when a <code>UITableViewCell</code> is selected, define a class implementing the <code>UITableViewDelegate</code> protocol and set <code>_departDatePicker.delegate</code> equal to that class. Then you can implement the regular <code>UITableViewDelegate</code> methods in that class.</p> <pre><code>- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { Event *event = [self.events objectAtIndex:indexPath.row]; MyViewController *viewController = [[UIStoryboard storyboardWithName:@"iPhone" bundle:nil] instantiateViewControllerWithIdentifier:@"eventInfo"]; viewController.event = event; [self.navigationController pushViewController:viewController animated:YES]; } </code></pre></li> </ol>

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