2018-01-11 获取当前时间和对时间戳的转换

//获取当前时间（时分秒毫秒）

+ (NSString *)currentTime
{
    NSDate * currentDate = [NSDate date];
    NSDateFormatter * dateFormatter = [[NSDateFormatter alloc]init];
    [dateFormatter setDateFormat:@"YYYY/MM/dd hh:mm:ss SS"];
    NSString * dateString = [dateFormatter stringFromDate:currentDate];
    return dateString;
}

对时间戳的转换

+ (NSString *)processingTimeStampWithTimeInterval:(NSString *)timeInterval
{
    NSTimeInterval _interval = [timeInterval doubleValue];
    NSDate *date = [NSDate dateWithTimeIntervalSince1970:_interval];
    NSDateFormatter * objDateformat = [[NSDateFormatter alloc] init];
    [objDateformat setDateFormat:@"yyyy年MM月dd日 HH:mm"];
    return [objDateformat stringFromDate:date];
}