iOS原生开发获取当前设备日期与时间

//获取当前时间

NSDate * timeDate=[NSDate date];

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

[dateformatter setDateFormat:@"HH:mm:ss"];

NSString * locationString=[dateformatter stringFromDate:timeDate];

NSLog(@"locationString is %@",locationString);

// 获取当前日期

NSCalendar* cal = [NSCalendar currentCalendar];

NSUInteger unitFlags = NSDayCalendarUnit|NSMonthCalendarUnit | NSYearCalendarUnit;

NSDateComponents* conponent = [cal components:unitFlags fromDate:timeDate];

NSInteger year = [conponent year];

NSInteger month = [conponent month];

NSInteger day = [conponent day];

NSString* nsDateString = [NSString stringWithFormat:@"%4ld年%2ld月%2ld日",year,month,day];

NSLog(@"nsDateString is %@",nsDateString);