Generate JSON string from NSDictionary in iOS

by

Apple added a JSON parser and serializer in iOS 5.0 and Mac OS X 10.7. See NSJSONSerialization.

To generate a JSON string from a NSDictionary or NSArray, you do not need to import any third party framework anymore.

Here is how to do it:

NSError *error; 
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictionaryOrArrayToOutput 
                                                   options:NSJSONWritingPrettyPrinted // Pass 0 if you don't care about the readability of the generated string
                                                     error:&error];

if (! jsonData) {
    NSLog(@"Got an error: %@", error);
} else {
    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}

More Related Contents:

  1. Convert string to mutable data – objective c [duplicate]
  2. Parse JSON with Objective-C
  3. How to use NSJSONSerialization
  4. How do I check if a string contains another string in Objective-C?
  5. Convert array to JSON string in swift
  6. Converting escaped UTF8 characters back to their original form
  7. iOS: Serialize/Deserialize complex JSON generically from NSObject class
  8. How to parse JSON in iOS App
  9. what is kCFErrorDomainCFNetwork Code=303
  10. Checking a null value in Objective-C that has been returned from a JSON string
  11. How can I make a UITextField move up when the keyboard is present – on starting to edit?
  12. UIAlertController custom font, size, color
  13. Creating a blurring overlay view
  14. Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars, edgesForExtendedLayout in iOS7
  15. How to intercept touches events on a MKMapView or UIWebView objects?
  16. Always pass weak reference of self into block in ARC?
  17. Add views in UIStackView programmatically
  18. Can I use Objective-C blocks as properties?
  19. Passing parameters to addTarget:action:forControlEvents
  20. Importing Project-Swift.h into a Objective-C class…file not found
  21. Get System Volume iOS
  22. UIRefreshControl – beginRefreshing not working when UITableViewController is inside UINavigationController
  23. Programmatically scroll a UIScrollView
  24. How to enable back/left swipe gesture in UINavigationController after setting leftBarButtonItem?
  25. Convert an iOS objective c object to a JSON string
  26. How to create border in UIButton?
  27. How to set the full width of separator in UITableView
  28. display done button on UIPickerview
  29. Convert a string into an int
  30. Swift 3 – dynamic vs @objc

Leave a Comment