//字符串 转Unicode
-
(NSString *)utf8ToUnicode:(NSString *)string{
NSUInteger length = [string length];
NSMutableString *str = [NSMutableString stringWithCapacity:0];
for (int i = 0;i < length; i++){
NSMutableString *s = [NSMutableString stringWithCapacity:0];
unichar _char = [string characterAtIndex:i];
// 判断是否为英文和数字
if (_char <= '9' && _char >='0'){
[s appendFormat:@"%@",[string substringWithRange:NSMakeRange(i,1)]];
}else if(_char >='a' && _char <= 'z'){
[s appendFormat:@"%@",[string substringWithRange:NSMakeRange(i,1)]];
}else if(_char >='A' && _char <= 'Z')
{
[s appendFormat:@"%@",[string substringWithRange:NSMakeRange(i,1)]];
}else{
// 中文和字符
[s appendFormat:@"\u%x",[string characterAtIndex:i]];
// 不足位数补0 否则解码不成功
if(s.length == 4) {
[s insertString:@"00" atIndex:2];
} else if (s.length == 5) {
[s insertString:@"0" atIndex:2];
}
}
[str appendFormat:@"%@", s];
}
return str;
}
//Unicode 转字符串
-
(NSString *)replaceUnicode:(NSString *)unicodeStr
{NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@"\u"withString:@"\U"];
NSString *tempStr2 = [tempStr1 stringByReplacingOccurrencesOfString:@"""withString:@"\""];
NSString *tempStr3 = [[@"""stringByAppendingString:tempStr2] stringByAppendingString:@"""];
NSData tempData = [tempStr3 dataUsingEncoding:NSUTF8StringEncoding];
NSString returnStr = [NSPropertyListSerialization propertyListFromData:tempData
mutabilityOption:NSPropertyListImmutable
format:NULL
errorDescription:NULL];
return [returnStr stringByReplacingOccurrencesOfString:@"\r\n"withString:@"\n"];
}
