String Encodings - NSASCIIStringEncoding
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
Discussion of [NSString NSASCIIStringEncoding]
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 NSASCIIStringEncoding]
// original string
NSString *str = @"ÁlgeBra";
// convert to a data object, using a lossy conversion to ASCII
NSData *asciiEncoded = [str dataUsingEncoding:NSASCIIStringEncoding
allowLossyConversion:YES];
// take the data object and recreate a string using the lossy conversion
NSString *other = [[NSString alloc] initWithData:asciiEncoded
encoding:NSASCIIStringEncoding];
// relinquish ownership
[other autorelease];
// create final capitalized string
NSString *final = [other capitalizedString];
Example of [NSString NSASCIIStringEncoding]
NSString* dataStr = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
Example of [NSString NSASCIIStringEncoding]
NSString *msg = [NSString stringWithFormat:@"tell me \"where\"\n"
"is\n"
"wrong"];
NSData *theData = [msg dataUsingEncoding:NSASCIIStringEncoding];
NSString* theString = [[NSString alloc] initWithData:theData encoding:NSASCIIStringEncoding];
BOOL isValid = [NSJSONSerialization isValidJSONObject:theString];
NSLog(@"Value %d %@",isValid, theString);