How do I convert an NSString value to NSData?
NSString* str = @"teststring";NSData* data = [str dataUsingEncoding:NSUTF8StringEncoding];
NSString *str = @"helowrld";// This converts the string to an NSData objectNSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];
you can take reference from this link
Do:
NSData *data = [yourString dataUsingEncoding:NSUTF8StringEncoding];
then feel free to proceed with NSJSONSerialization:JSONObjectWithData
.
Correction to the answer regarding the NULL terminator
Following the comments, official documentation, and verifications, this answer was updated regarding the removal of an alleged NULL terminator:
As documented by dataUsingEncoding::
Return Value
The result of invoking
dataUsingEncoding:allowLossyConversion:
with NO as the second argumentAs documented by getCString:maxLength:encoding: and cStringUsingEncoding::
note that the data returned by
dataUsingEncoding:allowLossyConversion:
is not a strict C-string since it does not have a NULL terminator