iOS 获取本地当前时间,时间戳 -- 把时间戳转化为时间

ios 获取系统当前时间

前言  在开发中,我们常常需要获取系统当前时间,然后对时间进行操作,下面我介绍几种获取时间的方法----已经封装好了,拖到工程里面就可以使用!

一.获取当前时间

```

//获取当前时间

```

-(NSString*)getCurrentTime {

NSDateFormatter*formatter = [[NSDateFormatter alloc]init];[formatter setDateFormat:@"yyyMMddHHmmss"];

NSString*dateTime = [formatter stringFromDate:[NSDatedate]];

self.CurrentTime= dateTime;

NSLog(@"当前时间是===%@",_CurrentTime);

return_CurrentTime;

}

```

```

2.获取当前时间戳

-(NSString*)getCurrentTimestamp{

NSDate* dat = [NSDate dateWithTimeIntervalSinceNow:0];

NSTimeInterval a=[dat timeIntervalSince1970];

NSString*timeString = [NSString stringWithFormat:@"%0.f", a];//转为字符型

returntimeString;

}

```

```

3.把时间戳转化为时间

-(NSString*)SetTime:(NSString*)time{

NSDateFormatter*formatter = [[NSDateFormatter alloc]init];

[formatter setDateStyle:NSDateFormatterMediumStyle];

[formatter setTimeStyle:NSDateFormatterShortStyle];

[formatter setDateFormat:@"yyyMMdd"];

inttimeval = [timeintValue];

NSDate*confromTimesp = [NSDate dateWithTimeIntervalSince1970:timeval];

// NSLog(@"1296035591  = %@",confromTimesp);

NSString*confromTimespStr = [formatters tringFromDate:confromTimesp];

returnconfromTimespStr;

}

```