iOS中获取当前时间和日期并设置格式

获取当前时间

NSDate *  timeDate=[NSDate
date];

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

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

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

NSString *  locationString=[dateformatter
stringFromDate:timeDate];

textField.text = 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];

textField.text = nsDateString;