ios 汉字转码 （汉字与utf8、Unicode转与汉字

ios 汉字转码 （汉字与utf8、Unicode转与汉字）

Unicode转化为汉字:

+ (NSString *)replaceUnicode:(NSString *)unicodeStr {

NSString *tempStr1 = [unicodeStrstringByReplacingOccurrencesOfString:@"\\u"withString:@"\\U"];

NSString *tempStr2 = [tempStr1stringByReplacingOccurrencesOfString:@"\""withString:@"\\\""];

NSString *tempStr3 = [[@"\""stringByAppendingString:tempStr2]stringByAppendingString:@"\""];

NSData *tempData = [tempStr3dataUsingEncoding:NSUTF8StringEncoding];

NSString* returnStr = [NSPropertyListSerializationpropertyListFromData:tempData

mutabilityOption:NSPropertyListImmutable

format:NULL

errorDescription:NULL];

return [returnStrstringByReplacingOccurrencesOfString:@"\\r\\n"withString:@"\n"];

}

汉字与utf8相互转化:

NSString* strA = [@"%E4%B8%AD%E5%9B%BD"stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSString *strB = [@"中国"stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSString 转化为utf8:

NSString *strings = [NSStringstringWithFormat:@"abc"];

NSLog(@"strings : %@",strings);

CF_EXPORT

CFStringRef CFURLCreateStringByAddingPercentEscapes(CFAllocatorRef allocator,CFStringReforiginalString,CFStringRef charactersToLeaved, CFStringReflegalURLCharactersToBeEscaped,CFStringEncoding encoding);

NSString *encodedValue = (__bridge NSString*)CFURLCreateStringByAddingPercentEscapes(nil,(__bridgeCFStringRef)strings,nil, (CFStringRef)@"!*'();:@&=+$,/?%#[]",kCFStringEncodingUTF8);

iso8859－1 到 unicode编码转换:

+ (NSString *)changeISO88591StringToUnicodeString:(NSString *)iso88591String

{

NSMutableString *srcString = [[[NSMutableString alloc]initWithString:iso88591String]autorelease];

[srcString replaceOccurrencesOfString:@"&" withString:@"&" options:NSLiteralSearchrange:NSMakeRange(0, [srcString length])];

[srcString replaceOccurrencesOfString:@"&#x" withString:@"" options:NSLiteralSearchrange:NSMakeRange(0, [srcString length])];

NSMutableString *desString = [[[NSMutableString alloc]init] autorelease];

NSArray *arr = [srcString componentsSeparatedByString:@";"];

for(int i=0;i<[arr count]-1;i++){

NSString *v = [arr objectAtIndex:i];

char *c = malloc(3);

int value = [StringUtil changeHexStringToDecimal:v];

c[1] = value &0x00FF;

c[0] = value >>8 &0x00FF;

c[2] = '\0';

[desString appendString:[NSString stringWithCString:c encoding:NSUnicodeStringEncoding]];

free(c);

}

return desString;

}