Converting between NSData and base64 strings

ios objective-c nsstring nsdata
aherlambang picture aherlambang · May 14, 2011 · Viewed 67.8k times · Source

What is the easiest and fastest code to do a conversion between NSData and a base64 string? I've read a bunch of solutions at SO and mostly they involve in adding another class etc. I found a great solution here but it's too complex.

Answer

Ryan Wersal picture Ryan Wersal · May 14, 2011

Scroll down to the Conclusion section on the page you linked and download the provided NSData+Base64 files. Its the best solution I have seen so far and is incredibly easy to use. If you can learn anything about Cocoa, you can learn to use that project.

Example

NSString *originalString = [NSString stringWithFormat:@"test"]; 
NSData *data = [NSData dataFromBase64String:originalString];  
NSLog([data base64EncodedString]);

The above will print out the original string after converting it to base64 and back to a normal unencoded string.

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