Unable to extract the keys from a JSON response - iphone

Question

Following is valid JSON Response:
**{
"responseHeader": null,
"cart": {
"locale": "en_US",
"currency": "USD",
"purchaseRequestId": 0,
"stuid": 0,
"defaultHeaderLineLevels": {},
"invalidMaterialIDs": [
{
"#class": "com.insight.web.domain.transaction.LineItem",
"ewrFee": null,
"name": null,
"currency": null,
"description": null,
"categoryId": null,
"poolID": null,
"contractReportingFields": {},
"selectedwarrantyDetails": null,
"manufacturerName": null,
"warrantyDetails": [],
"vspp": false,
"softwareLicense": false,
"sourceContractId": null,
"softwareLicenseType": "",
"nonShipabble": false,
"configured": false,
"partnerID": null,
"cartModifiedByConvertQuote": false,
"stock": 0,
"deletable": false,
"duplicatable": false,
"softwareLicensePhone": null,
"softwareLicenseName": null,
"zp00MaterialCategory": false,
"quotedShippingPrice": null,
"diversityPartners": [],
"labFeesExists": false,
"quoteConfigured": false,
"quotedOrderConditions": null,
"ruleID": ""
},
{
"#class": "com.insight.web.domain.transaction.LineItem",
"ewrFee": null,
"name": null,
"currency": null,
"description": null,
"selectPlus": false,
"lineLevels": {},
"materialID": "4434HE1-OPY",
"materialIDKey": "",
"isDiscontinued": false,
"itemNumber": null,
"quoteItemNumber": null,
"price": 0,
"quantity": 0,
"materialCategory": null,
"ruleID": ""
}
],
"webLoginProfile": null,
"requestorGroupId": null,
"defaultLineLevels": {},
"totalCost": 0,
"dpasCode": null,
"orderedDate": null,
"hasSPLAAndNonSPLAContracts": false,
"cartItemsForEmail": [],
},
"materialIdKeyList": []
}
To extract all the keys from it I am using the recursive function passing the JSON response as dictionary object "data":
-(NSMutableDictionary *)recurse:(NSDictionary *)data counter:(NSInteger *)i parent:(NSString *)parent
{
self.mDict = [NSMutableDictionary dictionary];
for (NSString* key in [data allKeys])
{
NSDictionary
*value = [data objectForKey:key];
if ([value isKindOfClass:[NSDictionary class]])
{
i++;
NSDictionary *newDict = (NSDictionary*)value;
[self recurse:newDict counter:i parent:key];
[self.mDict setValue:value forKey:key];
i--;
if(i==0)
{
return self.mDict;
}
}
else if([value isKindOfClass:[NSArray class]])
{
// loop through the NSArray and traverse any dictionaries found
NSArray *a = (NSArray *)value;
for(id child in a)
{
if([child isKindOfClass:[NSDictionary class]])
{
i++;
NSDictionary *newDict = (NSDictionary *)child;
[self recurse:newDict counter:i parent:key];
[self.mDict setValue:value forKey:key];
i--;
if(i==0)
{
return self.mDict;
}
}
else
{
[self.mDict setValue:value forKey:key];
}
}
}
else
{
[self.mDict setValue:value forKey:key];
}
}
return self.mDict;
}
The output only gives 3 keys-values pairs for keys: postLoginRedirectUrl,
cart,
defaultHeaderLineLevels....I mean its absurd. What other conditions should i include ?or is there a easy way to get all the keys from the JSON response which is my true goal.

Answer 1

Can you please convert the NSString into NSData and try the following line of code?
NSDictionary *dictionaryResponse = [NSJSONSerialization JSONObjectWithData:[stringResponse dataUsingEncoding:NSASCIIStringEncoding] options:0 error:nil];

Answer 2

Try The Following Code and let me know the feedback.
id jsonObject = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingAllowFragments error:nil];
if ([jsonObject respondsToSelector:#selector(objectForKey:)])
{
NSDictionary *cart_Dict=[jsonObject valueForKey:#"cart"];
NSString *responseHeader=[jsonObject valueForKey:#"responseHeader"];
NSArray *invalidMaterial_CartDict_array=[[jsonObject valueForKey:#"cart"] objectForKey:#"invalidMaterialIDs"];
NSArray *materialIdKeyList_array=[[jsonObject valueForKey:#"materialIdKeyList"]
}
if you dont know what is the respond string then you have to find all Keys
if ([jsonObject isKindOfClass: [NSArray class]])
{
//for Array you have to access by Object at Index
}
else if ([jsonObject isKindOfClass: [NSDictionary class]])
{
for (NSString *key in [jsonObject allKeys])
{
NSDictionary *feed = [jsonObject objectForKey:key];
//do stuff with feed.
}
}
else
{
// deal with it.
}