iOS: NSString to and from Binary Data

From Binary to String

If binary data is in NSData:
NSString *theStr = [[NSString alloc] initWithData:theData encoding:NSUTF8StringEncoding];

If it is in a char[]:

NSString * theStr =[[NSString alloc] initWithBytes:theBytes length:numBytes encoding:NSUTF8StringEncoding];

From String to Binary

NSData *theData = [theStr dataUsingEncoding:NSUTF8StringEncoding];

References

• http://stackoverflow.com/questions/2467844/convert-utf-8-encoded-nsdata-to-nsstring
• http://stackoverflow.com/questions/901357/how-do-i-convert-a-nsstring-value-to-nsdata