how to parse json string and store the object in an array in iphone - iphone

Question

I am getting data from server it gives in response a NSString which hase json data i want that json data to be store in an array how to do this
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *data=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(data);
NSData* data=[dataString dataUsingEncoding:NSUTF8StringEncoding];
[self performSelectorOnMainThread:#selector(fetchedData:)
withObject:data waitUntilDone:YES];
- (void)fetchedData:(NSData *)responseData {
//parse out the json data
NSError* error;
NSDictionary* json = [NSJSONSerialization
JSONObjectWithData:responseData //1
options:kNilOptions
error:&error];
NSArray* latestLoans = [json objectForKey:#"loans"]; //2
NSLog(#"loans: %#", latestLoans); //3
}
here is the log of data which return from server
[{"CodeValue":"90658","CodeDescription":"flu shot","IsActive":"1","CodeType":"CPT","CodeID":"6","UpdateDateTime":"2012-04-02 02:09:46"}]

Answer 1

NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *data=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSArray *dataArr=[data JSONValue];
for (int i=0; i<[dataArr count]; i++) {
NSDictionary *dict=[dataArr objectAtIndex:i];
NSString *codeV=[dict valueForKey:#"CodeValue"];
NSString *codeD=[dict valueForKey:#"CodeDescription"];
NSString *active=[dict valueForKey:#"IsActive"];
NSString *codeT=[dict valueForKey:#"CodeType"];
NSString *codeId=[dict valueForKey:#"CodeID"];
NSString *updatedTime=[dict valueForKey:#"UpdateDateTime"];
NSLog([dict description],nil);
}
NSLog(#"%#", json_string);
//May this will help you out.
Do include the JSon library classes to your project.
I am doing in this way to insert in an array but it return o object
NSDictionary *dict=[dataArr objectAtIndex:i];
SearchCode *theObject =[[SearchCode alloc] init];
theObject.codeValue=[dict valueForKey:#"CodeValue"];
theObject.codeDescription=[dict valueForKey:#"CodeDescription"];
theObject.codeType=[dict valueForKey:#"CodeType"];
theObject.codeID=[dict valueForKey:#"CodeID"];
theObject.UpdateDateTime=[dict valueForKey:#"UpdateDateTime"];
NSLog(codeType);
[cptArray addObject:theObject];
[theObject release];
theObject=nil;
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [cptArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.selectionStyle=UITableViewCellSelectionStyleGray;
cell.accessoryType = UITableViewCellAccessoryNone;
}
SearchCode *theObject =[cptArray objectAtIndex:indexPath.row];
cell.textLabel.text=theObject.codeValue; //& so on you can access any value from "theObject" here
}

Answer 2

If you want a more packaged solution check out: https://github.com/stig/json-framework
Its a awesome framework, to parse JSON you can just type
[string_here JSONValue];