How to create json like structure in Objective C in class property? - ios

Question

I am having the view controller class like this
ViewController.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController
#property (nonatomic, strong) NSDictionary *dictionary;
#end
ViewController.m
#import "ViewController.h"
#import "GoogleMaps.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//HOW TO ACCESS THE PROPERTY VALUE HERE
self.dictionary = #{};
/ DUMP ALL FOUND ITEMS
for(DummyContainer* geoItem in geoItems) {
NSDictionary *item = #{
#"latitude":geoItem.latitude,
#"longtitude":geoItem.longtitude
};
self.dictionary[geoItem.geoPoint.name] = item;
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
The expected format is
var container = {
'location':{
'latitude':1233,
'longtitude':124
}
}
This can be accessible via
let obj = container['location'];
for latitude access like this
obj.latitude;
Question1: How to create a class property as dictionary and access inside the class?
Question2: How to create JSON structure and access the values?
I am new to iOS please help me thanks in advance.

Answer 1

For creating non extendable/immutable Dictionary Object
#property (strong, nonatomic) NSDictionary *myClassDictionary;
For creating extendable/mutable Dictionary Object
#property (strong, nonatomic) NSMutableDictionary *myClassMutableDictionary;
Insert all of your values inside a Dictionary like this
You exampleData
'location':{
'latitude':1233,
'longtitude':124
}
NSDictionary *dict = #{#"lattitude":#"1233" , #"longitude":#"124"};
self.myClassDictionary = #{#"location":dict};//Convert this dictionary into JSON.
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject: self.myClassDictionary options:NSJSONWritingPrettyPrinted error:&error];
NSString jsonString;
if (! jsonData) {
NSLog(#"Got an error: %#", error);
} else {
jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}