获取系统当前时间

来源：互联网发布：大学生it就业培训编辑：程序博客网时间：2024/06/06 10:54

NSString *appKey(){//    // 获取系统当前时间//    NSDate * date = [NSDate date];//    NSTimeInterval sec = [date timeIntervalSinceNow];//    NSDate * currentDate = [[NSDate alloc] initWithTimeIntervalSinceNow:sec];//    //    //设置时间输出格式：//    NSDateFormatter * df = [[NSDateFormatter alloc] init ];//    [df setDateFormat:@"yyyyMMddHHmmss"];//    NSString * na = [df stringFromDate:currentDate];        //取毫秒    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];        [dateFormatter setDateStyle:NSDateFormatterMediumStyle];        [dateFormatter setTimeStyle:NSDateFormatterShortStyle];        [dateFormatter setDateFormat:@"SSSSMMddHHmmss"];//毫秒-月-日-时-分秒        NSString *time = [dateFormatter stringFromDate:[NSDate date]];    NSString *appKey = [NSString stringWithFormat:@"%@%@",time,[[NSString stringWithFormat:@"ecej12345678%@",time] md5HexDigest]];        return appKey;}

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