Convert NSArray into NSData iOS objective-c

Question

This is my code but i can't getting the data

NSData *wrtData = [NSKeyedArchiver archivedDataWithRootObject:my_Array];

Have you tried to print my_Array and is it printing proper data? — Pushkraj Lanjekar, Dec 13 '16 at 11:52
http://stackoverflow.com/questions/2226390/encode-nsarray-or-nsdictionary-using-nscoder Check this — vp2698, Dec 13 '16 at 11:56
http://stackoverflow.com/questions/1286212/how-to-convert-nsarray-to-nsdata See in the above link you'll get the solution — Madhu Avinash, Dec 13 '16 at 12:01
You might want to add more code: an exact way to recreate your my_Array for example. Main problem is: objects in your array don't conform to . — Rok Jarc, Dec 13 '16 at 12:39

score 1 · Answer 1 · answered Dec 13 '16 at 11:53

1

If you want to convert a NSArray to NSData you should make sure that all objects inside this array conform to NSCoding protocol. Same goes for NSDictionary.

answered Dec 13 '16 at 11:53

Rok Jarc

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KSR · Accepted Answer · 2016-12-13T12:47:18.563

1

Use this sample:

   NSArray *mapPoints = @[
                      @{ @"latitude":@"10.010490",
                          @"longitude":@"76.360779",
                          @"altitude":@"30.833334",
                          @"timestamp":@"11:17:23",
                          @"speed":@"0.00",
                          @"distance":@"0.00"
                      },
                      @{
                          @"latitude":@"10.010688",
                          @"longitude":@"76.361378",
                          @"altitude":@"28.546305",
                          @"timestamp":@"11:19:26",
                          @"speed":@"1.614",
                          @"distance":@"198.525711"
                      }
                      ];

NSLog(@"Countries array = %@",mapPoints);
NSData *mapPointsData = [NSKeyedArchiver archivedDataWithRootObject:mapPoints];
NSLog(@"countries data=%@",mapPointsData);
NSLog(@"mapPointsData to mapPointsArray = %@",[NSKeyedUnarchiver unarchiveObjectWithData:mapPointsData]);

Github link:

https://github.com/k-sathireddy/JsonArrayToNSData

edited Dec 13 '16 at 12:47

answered Dec 13 '16 at 12:01

KSR

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my array is in json formate, when archivedDataWithRootObject: then i got an error reason: '-[__NSCFType encodeWithCoder:]: unrecognized selector sent to instance 0x15f2b550 – Inder Dec 13 '16 at 12:21
i have the same json formate but on my end its not working, MY Array Count 4000, i got error ::: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFType encodeWithCoder:]: unrecognized selector sent to instance 0x160ebed0 – Inder Dec 13 '16 at 12:34
shall i add sample what i have done(same as the answer)? – KSR Dec 13 '16 at 12:38
sure @Sathi Reddy – Inder Dec 13 '16 at 12:41

Convert NSArray into NSData iOS objective-c

2 Answers2

Github link: