iPhone 时间操作

 

 

//获取当前时间
NSDateFormatter *nsdf2=[[[NSDateFormatter alloc] init]autorelease];
 [nsdf2 setDateStyle:NSDateFormatterShortStyle];
 [nsdf2 setDateFormat:@"YYYYMMDDHHmmssSSSS"];
 NSString *t2=[nsdf2 stringFromDate:[NSDate date]];

 

 

//获取系统当前的时间戳
NSDate* dat = [NSDate dateWithTimeIntervalSinceNow:0];
NSTimeInterval a=[dat timeIntervalSince1970]*1000;
NSString *timeString = [NSString stringWithFormat:@"%f", a];//转为字符型