displaying JSON data in Tableview in iphone - iphone

Question

below is the JSON i want to parse it in such a way that for e.g date 1st should all events in that section of table and 2nd date should show all related events in another section
I am parsing using below code but i am not getting required sequence
SBJsonParser *parser= [[SBJsonParser alloc] init];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:#"http://www.krsconnect.no/community/api.html?method=bareListEventsByCategory&appid=620&category-selected=350&counties-selected=Vest-Agder,Aust-Agder"]];
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
NSDictionary *object = [parser objectWithString:json_string error:nil];
NSArray *results = [parser objectWithString:json_string error:nil];
appDelegate.books1 = [[NSMutableArray alloc] init];
appDelegate.dates =[[NSMutableArray alloc]init];
for (int j=0;j<10; j++) {
NSDictionary *dictOne = [results objectAtIndex:j];
NSLog(#"%# - %#", [dictOne objectForKey:#"date"]);
Date *aDate = [[Date alloc] initWithDictionary:[results objectAtIndex:j]];
[appDelegate.dates addObject:aDate];
[aDate release];
}
for (int i=0; i<10; i++) {
NSDictionary *dictOne = [results objectAtIndex:i];
NSArray *activitiesArray = [dictOne objectForKey:#"events"];
NSDictionary *dictTwo = [activitiesArray objectAtIndex:i];
NSDictionary *eventDict=[dictTwo objectForKey:#"event"];
// NSLog(#"%# - %#", [dictOne objectForKey:#"date"]);
// NSLog(#"%# - %#", [dictTwo objectForKey:#"affectedDate"]);
// NSLog(#"%# - %#", [eventDict objectForKey:#"location"]);
NSInteger*date=[dictOne objectForKey:#"date"];
NSInteger*affectedDate=[dictTwo objectForKey:#"affectedDate"];
NSString*appId =[eventDict objectForKey:#"appId"];
NSString*eventId=[eventDict objectForKey:#"eventId"];
NSString*location=[eventDict objectForKey:#"location"];
NSString*municipality=[eventDict objectForKey:#"municipality"];
NSString*title=[eventDict objectForKey:#"title"];
Book1 *aBook=[[Book1 alloc] initWithDate:date affectedDate:affectedDate location:location municipality:municipality title:title];
[appDelegate.books1 addObject:aBook];
int count=[appDelegate.books1 count];
}
the json format is given below
http://www.krsconnect.no/community/api.html?method=bareListEventsByCategory&appid=620&category-selected=350&counties-selected=Vest-Agder,Aust-Agder

Answer 1

You need to aggregate your data in some different way.
Here is how I'd do that:
...
// why do you parse your json string two times?
//NSDictionary *object = [parser objectWithString:json_string error:nil];
NSArray *results = [parser objectWithString:json_string error:nil];
// You have memory leak here. I assume that books1 and dates are both properties with "retain" flag set.
//appDelegate.books1 = [[NSMutableArray alloc] init];
//appDelegate.dates =[[NSMutableArray alloc]init];
NSMutableArray *data = [NSMutableArray array]
self.data = data;
// check that what we've parsed is NSArray
if (results && [results isKindOfClass:[NSArray class]]) {
for (NSDictionary *sectionDict in results) {
if ([sectionDict isKindOfClass:[NSDictionary class]]) {
NSString *sectionTitle = [[sectionDict objectForKey:#"date"] description];
NSArray *events = [sectionDict objectForKey:#"events"];
if (date && events && [events isKindOfClass:[NSArray class]]) {
NSMutableArray *rows = [NSMutableArray arrayWithCapacity:[events count]];
for (NSDictionary *eventDict in events) {
if ([eventDict isKindOfClass:[NSDictionary class]]) {
[rows addObject:#"testRow"];
}
}
[data addObject:[NSDictionary dictionaryWithObjectsAndKeys: sectionTitle, #"section", rows, #"rows", nil]];
}
}
}
}
- (NSInteger) numberOfSectionsInTableView:(UITableView *)tblView {
return [data count];
}
- (NSInteger) tableView:(UITableView *)tblView numberOfRowsInSection:(NSInteger)section {
return [[[data objectAtIndex:section] objectForKey:#"rows"] count];
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
return [[data objectAtIndex:section] objectForKey:#"section"];
}
- (UITableViewCell *) tableView:(UITableView *)tblView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellID = #"DefaultCell";
UITableViewCell *cell = (UITableViewCell *)[tblView dequeueReusableCellWithIdentifier:cellID];
if ( cell == nil ) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID] autorelease];
}
cell.textLabel.text = [[[data objectAtIndex:indexPath.section] objectForKey:#"rows"] objectAtIndex:indexPath.row];
return cell;
}