進來的朋友直接開擼

一 .當前日期轉(zhuǎn)換時間戳

/** 當前日期轉(zhuǎn)化時間戳*/
- (void)currentTimeToTimeStamp {
    // 獲取當前時間
    NSDate *currentTime = [NSDate date];
    // 獲取時段
    NSTimeInterval time = [currentTime timeIntervalSince1970];
    // 拼接字符串
    NSString *timeStamp = [NSString stringWithFormat:@"%ld",(long)time];
    
    NSLog(@"%@",timeStamp);
}

運行結(jié)果：

Paste_Image.png

二.時間戳轉(zhuǎn)化日期

 /** 時間戳轉(zhuǎn)化日期*/
- (void)timeStampToTime {
    // 時間字符串
    NSString *timeStr = @"1478155127";
    // 時間字符串轉(zhuǎn)換時段
    NSTimeInterval time = [timeStr doubleValue];
    // 時段轉(zhuǎn)換時間
    NSDate *date=[NSDate dateWithTimeIntervalSince1970:time];
    // 時間格式
    NSDateFormatter *dataformatter = [[NSDateFormatter alloc] init];
    dataformatter.dateFormat = @"yyyy-MM-dd a HH:mm:ss EEEE";
    // 時間轉(zhuǎn)換字符串
    NSString *resultStr = [dataformatter stringFromDate:date];

    NSLog(@"%@",resultStr);
}

運行結(jié)果：

Paste_Image.png

下面是分享給大家NSDateFormatter的格式串：

a: AM/PM (上午/下午)
A: 0~86399999 (一天的第A微秒)
ccc: Sun/Mon/Tue/Wed/Thu/Fri/Sat (星期幾簡寫)
cccc: Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday (星期幾全拼)
d: 1~31 (月份的第幾天, 帶0)
D: 1~366 (年份的第幾天,帶0)
e: 1~7 (一周的第幾天, 帶0)
E~EEE: Sun/Mon/Tue/Wed/Thu/Fri/Sat (星期幾簡寫)
EEEE: Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday (星期幾全拼)
F: 1~5 (每月的第幾周, 一周的第一天為周一)
g: Julian Day Number (number of days since 4713 BC January 1) 未知
G~GGG: BC/AD (Era Designator Abbreviated) 未知
GGGG: Before Christ/Anno Domini 未知
h: 1~12 (0 padded Hour (12hr)) 帶0的時, 12小時制
H: 0~23 (0 padded Hour (24hr)) 帶0的時, 24小時制
k: 1~24 (0 padded Hour (24hr) 帶0的時, 24小時制
K: 0~11 (0 padded Hour (12hr)) 帶0的時, 12小時制
L/LL: 1~12 (0 padded Month) 第幾月
LLL: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec 月份簡寫
LLLL: January/February/March/April/May/June/July/August/September/October/November/December 月份全稱
m: 0~59 (0 padded Minute) 分鐘
M/MM: 1~12 (0 padded Month) 第幾月
MMM: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec
MMMM: January/February/March/April/May/June/July/August/September/October/November/December
q/qq: 1~4 (0 padded Quarter) 第幾季度
qqq: Q1/Q2/Q3/Q4 季度簡寫
qqqq: 1st quarter/2nd quarter/3rd quarter/4th quarter 季度全拼
Q/QQ: 1~4 (0 padded Quarter) 同小寫
QQQ: Q1/Q2/Q3/Q4 同小寫
QQQQ: 1st quarter/2nd quarter/3rd quarter/4th quarter 同小寫
s: 0~59 (0 padded Second) 秒數(shù)
S: (rounded Sub-Second) 未知
u: (0 padded Year) 未知
v~vvv: (General GMT Timezone Abbreviation) 常規(guī)GMT時區(qū)的編寫
vvvv: (General GMT Timezone Name) 常規(guī)GMT時區(qū)的名稱
w: 1~53 (0 padded Week of Year, 1st day of week = Sunday, NB: 1st week of year starts from the last Sunday of last year) 一年的第幾周, 一周的開始為周日,第一周從去年的最后一個周日起算
W: 1~5 (0 padded Week of Month, 1st day of week = Sunday) 一個月的第幾周
y/yyyy: (Full Year) 完整的年份
yy/yyy: (2 Digits Year) 2個數(shù)字的年份
Y/YYYY: (Full Year, starting from the Sunday of the 1st week of year) 這個年份未知干嘛用的
YY/YYY: (2 Digits Year, starting from the Sunday of the 1st week of year) 這個年份未知干嘛用的
z~zzz: (Specific GMT Timezone Abbreviation) 指定GMT時區(qū)的編寫
zzzz: (Specific GMT Timezone Name) Z: +0000 (RFC 822 Timezone) 指定GMT時區(qū)的名稱