Parsing JSON object and sub-elements - ios

Question

I just need to know proper method to parse the JSON string.
Here is my sample JSON response:
[
{
"my_response": [
{
"name": "XXX",
"Area": "XXX",
"Num": 123
}
]
},
{
"other_response": [
{
"message": "Hello",
"status": "Success",
"flag_value": "1"
}
]
}
]
I want to parse flag_value in a String
I tried this method
NSString *str1 = [json valueForKeyPath:#"other_response. flag_value"];
NSLog(#"str %#",str1);
And my output is some what like this
str (
"<null>",
(
1
)
)
But I want my output to be a string like this:
1

Answer 1

[{"my_response":[{"name":"XXX","Area":"XXX","Num":123}]},{"other_response":[{"message":"Hello","status":"Success","flag_value":"1"}]}]
actually your Json response Start in Array so follow this step
Step-1
NSArray *jsonDict = [NSJSONSerialization JSONObjectWithData:yourData options:Kniloptions error:nil];
Step-2
in here you are get 2 Dictionaries
NSString *FlagStr;
for (NSMutableDictionary *temp in jsonDict)
{
NSArray *secondOption=[temp objectForKey:#"other_response"];
for (NSMutableDictionary *second in secondOption)
{
FlagStr=[second objectForKey:#"flag_value"];
}
}
Choice no-2
I am not try this but May be it work for you , once check
Step-1
NSArray *jsonDict = [[[NSJSONSerialization JSONObjectWithData:yourData options:Kniloptions error:nil]objectAtIndex:1] objectForKey:#"other_response"];
Step-2
NSString *FlagStr;
for (NSMutableDictionary *second in secondOption)
{
FlagStr=[temp objectForKey:#"flag_value"];
}
Choice no-3
you can directly fetch the string value I am not try this but May be it work for you , once check
NSString *flage = [[[NSJSONSerialization JSONObjectWithData:yourData options:Kniloptions error:nil]objectAtIndex:1] objectForKey:#"other_response"]objectAtIndex:0] objectForKey:#"flag_value"];

Answer 2

First of all, I think your JSON would be better formatted like the following:
{
"my_response": {
"name": "XXX",
"area": "XXX",
"num": "XXX"
},
"other_response": {
"message": "Hello",
"status": "success",
"flag_value": "1"
}
}
Then you can use the following code to access your data:
NSString *jsonString = #"{\"my_response\": {\"name\": \"XXX\",\"area\": \"XXX\",\"num\": \"XXX\"},\"other_response\": {\"message\": \"Hello\",\"status\": \"success\",\"flag_value\": \"1\"}}";
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableLeaves error:nil];
NSLog(#"str: %#", [jsonDict valueForKeyPath:#"other_response.flag_value"]);

Answer 3

Format your Json array like this way.
{
"my_response": {"name": "XXX","area": "XXX","num": "XXX"
},
"other_response": {"message": "Hello","status": "success","flag_value": "1"
}
}
**Step : 2**
Use AFNetworking for HTTP Client
- (void)yourMethod{
NSString *urlString = [NSString stringWithFormat:#"%#", your_service_url];
NSURL *url = [NSURL URLWithString:urlString];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
[AFJSONRequestOperation addAcceptableContentTypes:[NSSet setWithObject:#"text/html"]];
NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
your_parameters_list,
nil];
NSMutableURLRequest *jsonRequest = [httpClient requestWithMethod:#"POST"
path:urlString
parameters:params];
AFJSONRequestOperation *operation =
[AFJSONRequestOperation JSONRequestOperationWithRequest:jsonRequest success: ^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
NSLog(#" Success %#", JSON);
NSDictionary *jsonDictionary1 = [JSON valueForKey:#"my_response"];
NSDictionary *jsonDictionary2 = [JSON valueForKey:#"other_response"];
NSString* name = [jsonDictionary1 valueForKey:#“name”];
NSString* area = [jsonDictionary1 valueForKey:#"name"];
NSString* num = [jsonDictionary1 valueForKey:#"num"];
} failure: ^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
NSLog(#"Fail %#", [error userInfo]);
NSLog(#“Error %#", [error localizedRecoverySuggestion]);
}];
[operation start];
}

Answer 4

As accepted above brother Anbu.Karthick answer.But I want to give answer for this
NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData:yourResponseData options: NSJSONReadingMutableContainers error: &err];
for (int i =0; i<[jsonArray count]; i++)
{
NSMutableDictionary *dict = [[jsonArray objectAtIndex:i] mutableCopy];
NSString *strFlag = [NSString stringWithFormat:#"%#",[[[dict objectForKey:#"other_response"] objectAtIndex:0] valueForKey:#"flag_value"]];
NSLog(#"The strFlag is-%#",strFlag);
}