iOS中unicode 转汉字

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

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

// 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"];

}