Objective-C Language NSString Encoding and Decoding
Example
// decode
NSString *string = [[NSString alloc] initWithData:utf8Data
encoding:NSUTF8StringEncoding];
// encode
NSData *utf8Data = [string dataUsingEncoding:NSUTF8StringEncoding];
Some supported encodings are:
NSASCIIStringEncodingNSUTF8StringEncodingNSUTF16StringEncoding(==NSUnicodeStringEncoding)
Note that utf8Data.bytes does not include a terminating null character, which is necessary for C strings. If you need a C string, use UTF8String:
const char *cString = [string UTF8String];
printf("%s", cString);
