ios datePicker简单写法
头文件里定义 label 和 datepicker
@interface ViewController : UIViewController{ UILabel *dateLabel; UIDatePicker *datePicker;}@property (nonatomic,retain)IBOutlet UILabel *dateLabel;@property(nonatomic,retain)IBOutlet UIDatePicker *datePicker;-(IBAction)dateChanged:(id)sender;@end@synthesize dateLabel;@synthesize datePicker;- (void)viewDidLoad{ [super viewDidLoad]; NSDate *date = [NSDate date]; [datePicker setDate:date animated:YES]; -(IBAction)dateChanged:(id)sender{ NSDate *curDate =[datePicker date]; NSDateFormatter *formate = [[NSDateFormatter alloc] init]; [formate setDateStyle:NSDateFormatterLongStyle]; [formate setTimeStyle:NSDateFormatterLongStyle]; NSString *formateDateString = [formate stringFromDate:curDate]; NSLog(@"string is %@" ,formateDateString); dateLabel.text = [NSString stringWithFormat: @"当前时间是 %@", formateDateString];// [formate release];}[super viewDidLoad]; NSDate *date = [NSDate date]; [datePicker setDate:date animated:YES]; NSCalendar *cul =[NSCalendar currentCalendar]; NSDateComponents *com = [cul components:NSYearCalendarUnit| NSMonthCalendarUnit| NSDayCalendarUnit| NSHourCalendarUnit| NSMinuteCalendarUnit| NSSecondCalendarUnit fromDate:date]; NSLog(@"time is %d-%d-%d %02d:%02d:%02d", [com year], [com month], [com day], [com hour], [com minute], [com second]); NSDateFormatter *formater =[[NSDateFormatter alloc]init]; [formater setDateFormat:@"YYYY-MM-DD"]; NSString *dl = [formater stringFromDate:date]; NSLog(@"CURRENT TIME %@",dl);