將某個(gè)時(shí)間戳轉(zhuǎn)化成 時(shí)間

 NSString *res = [self timestampSwitchTime:[timestamp integerValue] andFormatter:@"YYYY-MM-dd hh:mm:ss"];
#pragma mark - 將某個(gè)時(shí)間戳轉(zhuǎn)化成 時(shí)間
+ (NSString *)timestampSwitchTime:(NSInteger)timestamp andFormatter:(NSString *)format{
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:format]; // （@"YYYY-MM-dd hh:mm:ss"）----------設(shè)置你想要的格式,hh與HH的區(qū)別:分別表示12小時(shí)制,24小時(shí)制
    NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@"Asia/Beijing"];
    [formatter setTimeZone:timeZone];
    NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:timestamp];
    /// 在當(dāng)前時(shí)間，后退30分鐘 = 1800
//    confromTimesp = [confromTimesp dateByAddingTimeInterval:-1800];
    NSLog(@"1296035591 = %@",confromTimesp);
    NSString *confromTimespStr = [formatter stringFromDate:confromTimesp];
    return confromTimespStr;
}

計(jì)算兩個(gè)時(shí)間點(diǎn)差值

NSInteger vipLastTime = [self pleaseInsertStarTimeo:res andInsertEndTime:[PublicDatas session].userInfo.expireTime];
+ (NSInteger)pleaseInsertStarTimeo:(NSString *)time1 andInsertEndTime:(NSString *)time2{
    // 1.將時(shí)間轉(zhuǎn)換為date
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    formatter.dateFormat = @"YYYY-MM-dd hh:mm:ss";
    NSDate *date1 = [formatter dateFromString:time1];
    NSDate *date2 = [formatter dateFromString:time2];
    // 2.創(chuàng)建日歷
    NSCalendar *calendar = [NSCalendar currentCalendar];
//    NSCalendarUnit type = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
    NSCalendarUnit type = NSCalendarUnitSecond;
    // 3.利用日歷對(duì)象比較兩個(gè)時(shí)間的差值
    NSDateComponents *cmps = [calendar components:type fromDate:date1 toDate:date2 options:0];
    // 4.輸出結(jié)果
    NSLog(@"兩個(gè)時(shí)間相差%ld年%ld月%ld日%ld小時(shí)%ld分鐘%ld秒", cmps.year, cmps.month, cmps.day, cmps.hour, cmps.minute, cmps.second);
    return cmps.second;
}