Change json format in NSDictionary (Objective C) - objective-c

Question

I am new in ios programming. I should apply data to the chart. But the framework(ShinobiControls) which I use accepts only json with certain format. So I have to change my json data format to appropriate. I have NSDictionary which contain json like this:
"data": [
"01.01.2015",
"01.01.2015",
"01.01.2015",
"01.01.2015"]
"close": [
[
1,
1,
1,
1]
And now I should change format of the json like this:
[
{
"date": "01.01.2015",
"close": 1
},
{
"date": "01.01.2015",
"close": 1
},
{
"date": "01.01.2015",
"close": 1
},
{
"date": "01.01.2015",
"close": 1
}
]
I did some manipulation with converting NSDictionary to NSArray, but didn't get anything. How can I do it? Do you have any ideas? Thank you.

Answer 1

So if i understand your question right, you have a dictionary that contains 2 arrays and you want to convert it to an array that contains dictionaries , assuming that that the count of the arrays in the dictionary is equal, you can do the following
//This is the first array in your dictionary
NSArray * dataArr = [data objectForKey:#"data"] ;
//This the second array in your dictionary
NSArray * closeArr = [data objectForKey:#"close"] ;
NSUInteger dataCount = [dataArr count] ;
NSUInteger closeCount = [closeArr count] ;
//This will be your result array
NSMutableArray * newData = [NSMutableArray new] ;
//The loop condition checks that the current index is less than both the arrays
for(int i = 0 ; i<dataCount && i<closeCount ; i++)
{
NSMutableDictionary * temp = [NSMutableDictionary new] ;
NSString * dataString = [dataArr objectAtIndex:i];
NSString * closeString = [closeArr objectAtIndex:i];
[temp setObject:dataString forKey:#"date"];
[temp setObject:closeString forKey:#"close"] ;
[newData addObject:temp];
}

Answer 2

NSArray *Arr = [[NSArray alloc] initWithObjects:#"01.01.2015",#"01.01.2015",#"01.01.2015",#"02.01.2015", nil];
NSArray *Arr1 = [[NSArray alloc] initWithObjects:#"1",#"1",#"1",#"1", nil];
NSDictionary *Dic = [[NSDictionary alloc] initWithObjectsAndKeys:Arr,#"data",Arr1,#"close", nil];
NSLog(#"%#",Dic);
NSMutableArray *ArrM = [[NSMutableArray alloc] init];
for ( int i = 0; i<Arr.count; i++) {
NSDictionary *Dic = [[NSDictionary alloc] initWithObjectsAndKeys:Arr[i],#"data",Arr1[i],#"close", nil];
[ArrM addObject:Dic];
}
NSLog(#"%#",ArrM);
NSError * err;
NSData * jsonData = [NSJSONSerialization dataWithJSONObject:ArrM options:0 error:&err];
NSString * myString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSLog(#"%#",myString);