iPhone：dataUsingEncoding支持哪些不同类型的编码？

Question

有人能指出我列出iPhone中“dataUsingEncoding”支持的所有编码类型的文章或文档吗？

Answer 1

//This can print all of encoding that iPhone supports
NSMutableArray *arrayOfEncodings = [[NSMutableArray alloc] init];

const NSStringEncoding *encodings = [NSString availableStringEncodings];
while (*encodings != 0){
    [arrayOfEncodings addObject:[NSNumber numberWithUnsignedLong:*encodings]];
    encodings++;
}

for (int i=0; i<arrayOfEncodings.count; i++) {
    NSStringEncoding aNSStringEncoding = [[arrayOfEncodings objectAtIndex:i] unsignedLongValue];
    CFStringEncoding aCFStringEncoding = CFStringConvertNSStringEncodingToEncoding(aNSStringEncoding);
    CFStringRef encodingNameInCFString = CFStringGetNameOfEncoding(aCFStringEncoding);
    NSString * encodingName = (NSString*)encodingNameInCFString;
    NSLog(@"%@", encodingName);
}

Answer 2

[NSString availableStringEncodings]

Answer 3

NSString availableStringEncodings方法将返回可用编码列表 - 当前（从iOS 4.2开始）选项为：

• NSASCIIStringEncoding
• NSUnicodeStringEncoding
• NSISOLatin1StringEncoding
• NSISOLatin2StringEncoding
• NSSymbolStringEncoding