IOS/xcode debug crash handling json feed - ios

Question

IOS newb here having trouble with debugging.
Am trying to handle a json feed but code below is breaking at
- (void)viewDidLoad {
[super viewDidLoad];
shnote = #"shnote”;
lnote = #"lnote”;
myObject = [[NSMutableArray alloc] init];
self.title=#"Challenges";
NSData *jsonSource = [NSData dataWithContentsOfURL:
[NSURL URLWithString:#"http://www.~~/webservice.php"]];
id jsonObjects = [NSJSONSerialization JSONObjectWithData:
jsonSource options:NSJSONReadingMutableContainers error:nil];
for (NSDictionary *dataDict in jsonObjects) {
//BREAKS HERE
NSString *shnote_data = [dataDict objectForKey:#"shnote”];
//ABOVE LINE HIGHLIGHTED IN GREEN AT BREAKPOINT
NSString *lnote_data = [dataDict objectForKey:#"lnote”];
dictionary = [NSDictionary dictionaryWithObjectsAndKeys:
shnote_data, shnote,lnote_data, lnote,nil];
[myObject addObject:dictionary];
}
/*
*/
}
The line highlighted in console is
dataDict = (NSDictionary *const)#"notes"
notes is name of table but other than that I am clueless.
Would appreciate any suggestions.

Answer 1

Your data source is of the format:
{
"notes": [
{
"row": {
"shnote": <...>,
"lnote": <...>
}
},
{
"row": {
"shnote": <...>,
"lnote": <...>
}
},
<...>
]
}
Steps to fetch each row content should therefore be:
Read value of notes property
Iterate through each row
Read value of row property
Read shnote and lnote properties
You're missing steps 1, 2 and 3. In code:
NSURL *url = [NSURL URLWithString:#"http://www.~~/webservice.php"];
NSData *jsonSource = [NSData dataWithContentsOfURL:url];
NSDictionary *jsonObject = [NSJSONSerialization JSONObjectWithData:jsonSource options:NSJSONReadingMutableContainers error:nil];
NSDictionary *notes = jsonObject[#"notes"];
for(NSDictionary *note in notes) {
NSDictionary *row = note[#"row"];
NSString *shnote = row[#"shnote"];
NSString *lnote = row[#"lnote"];
NSLog(#"%#, %#", shnote, lnote);
}