获取系统时间，这个更准确

逃离我推掉我的手 2022-06-02 07:40 160阅读 0赞

NSDate \*now = \[NSDate date\];  
    NSLog(@"now date is: %@", now);  
      
    NSCalendar \*calendar = \[NSCalendar currentCalendar\];  
    NSUInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;  
    NSDateComponents \*dateComponent = \[calendar components:unitFlags fromDate:now\];  
      
    int year =(int) \[dateComponent year\];  
    int month = (int) \[dateComponent month\];  
    int day = (int) \[dateComponent day\];  
    int hour = (int) \[dateComponent hour\];  
    int minute = (int) \[dateComponent minute\];  
    int second = (int) \[dateComponent second\];  
      
    NSInteger year = \[dateComponent year\];  
    NSInteger month =  \[dateComponent month\];  
    NSInteger day = \[dateComponent day\];  
    NSInteger hour =  \[dateComponent hour\];  
    NSInteger minute =  \[dateComponent minute\];  
    NSInteger second = \[dateComponent second\];  
  
      
    NSLog(@"year is: %ld", (long)year);  
    NSLog(@"month is: %ld", (long)month);  
    NSLog(@"day is: %ld", (long)day);  
    NSLog(@" hour is: %ld",  (long)hour);  
    NSLog(@"minute  is: %ld", (long)minute );  
    NSLog(@"second is: %ld", (long)second);  
     //字符串的转化并且拼接  
      NSString \*yearstr=\[NSString stringWithFormat:@"%ld-",(long)year\];  
      NSString \*monthstr=\[NSString stringWithFormat:@"%ld-",(long)month\];  
     NSString \*daystr=\[NSString stringWithFormat:@"%ld ",(long)day\];  
     NSString \*hourstr=\[NSString stringWithFormat:@"%ld:",(long)hour\];  
    NSString \*minutestr=\[NSString stringWithFormat:@"%ld:",(long)minute\];  
    NSString \*secondstr=\[NSString stringWithFormat:@"%ld",(long)second\];  
    //字符串开始拼接  
    NSString \*allstr=\[yearstr stringByAppendingString:monthstr\];  
    NSString \*allstr1=\[allstr stringByAppendingString:daystr\];  
    NSString \*allstr2=\[allstr1 stringByAppendingString:hourstr\];  
    NSString \*allstr3=\[allstr2 stringByAppendingString:minutestr\];  
    NSString \*DateTime=\[allstr3 stringByAppendingString:secondstr\];  
    NSLog(@"最后年月日时分秒拼接的结果=====%@",DateTime);