Kal datasource delegates - ios

Question

I'm usin Kal https://github.com/klazuka/Kal to implement a calendar. I'm using storyboard, so I add KalViewController as a child to the container view controller.
kal.delegate = self;
kal.dataSource = dataSource;
dataSource = [[CalendarDataSourceDelegate alloc] init];
kal = [[KalViewController alloc] init];
[self addChildViewController:kal];
[kal didMoveToParentViewController:self];
[self.calendarioView addSubview:kal.view];
[clickEvent insertPrintAdd:zona_competicion];
I use an external object as datasource delegate, but after fetching data from my backend by webservice, I don't know how to call delegates to load calendar with fetched data:
#implementation CalendarDataSourceDelegate
- (id)init
{
if ((self = [super init])) {
items = [[NSMutableArray alloc] init];
matches = [[NSMutableArray alloc] init];
buffer = [[NSMutableData alloc] init];
}
[self fetchHolidays];
return self;
}
- (eventMatch *)eventAtIndexPath:(NSIndexPath *)indexPath
{
return [items objectAtIndex:indexPath.row];
}
#pragma mark UITableViewDataSource protocol conformance
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *identifier = #"MyCell";
eventNoAddedCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
if (!cell) {
cell = [[eventNoAddedCell alloc] initWithStyle:UITableViewCellSelectionStyleNone reuseIdentifier:identifier];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.imageView.contentMode = UIViewContentModeScaleAspectFill;
}
eventMatch *event = [self eventAtIndexPath:indexPath];
cell.escudoLocal.image = [UIImage imageNamed:[NSString stringWithFormat:#"%#.png",event.equipoLocal ]];
cell.escudoVis.image = [UIImage imageNamed:[NSString stringWithFormat:#"%#.png",event.equipoVisitante ]];
cell.equipoLocal.text = event.equipoLocal;
cell.equipoVisitante.text = event.equipoVisitante;
cell.competicion.text = event.competicion;
cell.jornada.text = event.jornada;
cell.hora.text = event.hora;
cell.canalesTV.text = event.canalesTV;
[self fetchHolidays];
return cell;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [items count];
}
#pragma mark Fetch from the internet
- (void)fetchHolidays
{
NSString *urlStr = [NSString stringWithFormat:#"http://backend.exular.net/contenido/webservices/xlr_ws_calendario.php?idp=105"];
dataReady = NO;
[matches removeAllObjects];
conn = [NSURLConnection connectionWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlStr]] delegate:self];
[conn start];
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[buffer setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[buffer appendData:data];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSError *error=nil;
NSDictionary *tempDic = [NSJSONSerialization JSONObjectWithData:buffer options:kNilOptions error:&error];
NSArray *array = [tempDic valueForKey:#"nodes"];
NSDateFormatter *fmt = [[NSDateFormatter alloc] init] ;
[fmt setDateFormat:#"dd/MM/yyyy"];
for (NSDictionary *jornada in array) {
NSDate *d = [fmt dateFromString:[jornada objectForKey:#"fecha"]];
[matches addObject:[eventMatch equipoVisitante:[jornada valueForKey:#"id_visitante"] equipoLocal:[jornada valueForKey:#"id_local"] resultadoVisitante:[jornada valueForKey:#"res_visitante"] resultadoLocal:[jornada valueForKey:#"res_local"] canalesTV:[jornada valueForKey:#"cadenas"] date:d time:[jornada valueForKey:#"hora"] jornada:[jornada valueForKey:#"jornada"] competicion:[jornada valueForKey:#"competicion"]]]; }
dataReady = YES;
[callback loadedDataSource:self];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(#"HolidaysCalendarDataSource connection failure: %#", error);
}
#pragma mark KalDataSource protocol conformance
- (void)presentingDatesFrom:(NSDate *)fromDate to:(NSDate *)toDate delegate:(id<KalDataSourceCallbacks>)delegate
{
/*
* In this example, I load the entire dataset in one HTTP request, so the date range that is
* being presented is irrelevant. So all I need to do is make sure that the data is loaded
* the first time and that I always issue the callback to complete the asynchronous request
* (even in the trivial case where we are responding synchronously).
*/
if (dataReady) {
[callback loadedDataSource:self];
return;
}
callback = delegate;
[self fetchHolidays];
}
- (NSArray *)markedDatesFrom:(NSDate *)fromDate to:(NSDate *)toDate
{
if (!dataReady)
return [NSArray array];
return [[self matchesFrom:fromDate to:toDate] valueForKeyPath:#"date"];
}
- (void)loadItemsFromDate:(NSDate *)fromDate toDate:(NSDate *)toDate
{
if (!dataReady)
return;
[items addObjectsFromArray:[self matchesFrom:fromDate to:toDate]];
}
- (void)removeAllItems
{
[items removeAllObjects];
}
#pragma mark -
- (NSArray *)matchesFrom:(NSDate *)fromDate to:(NSDate *)toDate
{
NSMutableArray *matchesUpdate = [NSMutableArray array];
for (eventMatch *match in matches)
if (IsDateBetweenInclusive(match.date, fromDate, toDate))
[matchesUpdate addObject:match];
return matches;
}
- (void)dealloc
{
matches=nil;
}

Answer 1

First, I find strange that you alloc your KalViewController after using it, I would do it just in the opposite order:
kal = [[KalViewController alloc] init];
kal.delegate = self;
kal.dataSource = dataSource;
And then why don't you just call?:
[kal reloadData];