String Encodings - NSUTF16StringEncoding
The following constants are provided by
NSString
as possible string encodings.enum {
NSASCIIStringEncoding = 1,
NSNEXTSTEPStringEncoding = 2,
NSJapaneseEUCStringEncoding = 3,
NSUTF8StringEncoding = 4,
NSISOLatin1StringEncoding = 5,
NSSymbolStringEncoding = 6,
NSNonLossyASCIIStringEncoding = 7,
NSShiftJISStringEncoding = 8,
NSISOLatin2StringEncoding = 9,
NSUnicodeStringEncoding = 10,
NSWindowsCP1251StringEncoding = 11,
NSWindowsCP1252StringEncoding = 12,
NSWindowsCP1253StringEncoding = 13,
NSWindowsCP1254StringEncoding = 14,
NSWindowsCP1250StringEncoding = 15,
NSISO2022JPStringEncoding = 21,
NSMacOSRomanStringEncoding = 30,
NSUTF16StringEncoding = NSUnicodeStringEncoding,
NSUTF16BigEndianStringEncoding = 0x90000100,
NSUTF16LittleEndianStringEncoding = 0x94000100,
NSUTF32StringEncoding = 0x8c000100,
NSUTF32BigEndianStringEncoding = 0x98000100,
NSUTF32LittleEndianStringEncoding = 0x9c000100,
NSProprietaryStringEncoding = 65536
};
Constants
NSUTF16StringEncoding
- An alias for
NSUnicodeStringEncoding
. - Discussion of [NSString NSUTF16StringEncoding]
These values represent the various character encodings supported by the
NSString
classes. This is an incomplete list. Additional encodings are defined in String Programming Guide for Core Foundation (see CFStringEncodingExt.h
); these encodings can be used with NSString
by first passing the Core Foundation encoding to the CFStringConvertEncodingToNSStringEncoding
function.Example of [NSString NSUTF16StringEncoding]
NSString *myAccentStr = @"José";
NSUInteger l1 = [myAccentStr lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
NSUInteger l2 = [myAccentStr lengthOfBytesUsingEncoding:NSUTF16StringEncoding];
NSUInteger l3 = [myAccentStr lengthOfBytesUsingEncoding:NSUTF32StringEncoding];
NSLog(@"%ld %ld %ld", (long)l1, (long)l2, (long)l3);
> 5, 8, 16
Example of [NSString NSUTF16StringEncoding]
NSString* question = [dataElements objectAtIndex:2];
const char * questionCString = [question cStringUsingEncoding:NSUTF16StringEncoding];
card.question = [[[NSString alloc] initWithCString:questionCString encoding:UTF16StringEncoding] autorelease];
Example of [NSString NSUTF16StringEncoding]
NSString* resultTemp = @"\u1F604";
NSData* data = [resultTemp dataUsingEncoding:NSUTF16StringEncoding];
NSString* result = [[NSString alloc] initWithData:data encoding:NSUTF16StringEncoding];
self.detailDescriptionLabel.text = result;