iOS获取当前时间

- (void)time{

NSDate *now=[NSDate
date];

NSCalendar *cal=[NSCalendar
currentCalendar];

unsigned
int time=NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay|NSCalendarUnitHour|NSCalendarUnitMinute|NSCalendarUnitSecond;

NSDateComponents *t=[cal
components:time fromDate:now];

int year=[t year];

int mouth=[t month];

int day=[t day];

int hour=[t hour];

int minute=[t minute];

//int second=[t second];

self.label2.text=[NSString
stringWithFormat:@"预计%2d-%2d-%2d %2d:%2d前到账",year,mouth,day,hour,minute];

NSLog(@"text:%@",self.label2.text);

}