以下代码用于显示我的 UIDatepicker:
- (IBAction)showActionSheet:(id)sender {
NSString *title = UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation) ? @"\n\n\n\n\n\n\n\n\n" : @"\n\n\n\n\n\n\n\n\n\n\n\n" ;
UIActionSheet *actionSheet = [[UIActionSheet alloc]
initWithTitle:[NSString stringWithFormat:@"%@%@", title, NSLocalizedString(@"Please Select A Date", @"")]
delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:@"I've Made My Choice", nil];
[actionSheet showInView:self.view];
UIDatePicker *datePicker = [[[UIDatePicker alloc] init] autorelease];
datePicker.datePickerMode = UIDatePickerModeDate;
[actionSheet addSubview:datePicker];
}
一切正常,但我想做的是将用户的选择显示到我命名为“label1 ”的标签中。有人可以帮忙吗?谢谢!
更新:
这是更新后的代码:
- (IBAction)showActionSheet:(id)sender {
NSString *title = UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation) ? @"\n\n\n\n\n\n\n\n\n" : @"\n\n\n\n\n\n\n\n\n\n\n\n" ;
UIActionSheet *actionSheet = [[UIActionSheet alloc]
initWithTitle:[NSString stringWithFormat:@"%@%@", title, NSLocalizedString(@"Please Select A Date", @"")]
delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:@"I've Made My Choice", nil];
[actionSheet showInView:self.view];
UIDatePicker *datePicker = [[[UIDatePicker alloc] init] autorelease];
datePicker.datePickerMode = UIDatePickerModeDate;
[actionSheet addSubview:datePicker];
[datePicker addTarget:self
action:@selector(updateLabel:)
forControlEvents:UIControlEventValueChanged];
}
- (void)updateLabel:(id)sender {
NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
label1.text = [NSString stringWithFormat:@"%@",[df stringFromDate:datePicker.date]];
[df release];
/* the following allows you to choose the date components
NSCalendar *calendar = [NSCalendar currentCalendar];
int hour = [[calendar components:NSHourCalendarUnit fromDate:[datePicker date]] hour];
int minute = [[calendar components:NSMinuteCalendarUnit fromDate:[datePicker date]] minute];
int year = [[calendar components:NSYearCalendarUnit fromDate:[datePicker date]] year];
int month = [[calendar components:NSMonthCalendarUnit fromDate:[datePicker date]] month];
int day = [[calendar components:NSDayCalendarUnit fromDate:[datePicker date]] day];
*/
}
这对于 .m 来说,我的 .xib 也正确绑定(bind)了“标签”:) 每当我选择日期时就会得到一个(空)值:(
最佳答案
.h
#import <UIKit/UIKit.h>
@interface YourViewController : UIViewController {
IBOutlet UILabel *label1;
}
@property (nonatomic, retain) UILabel *label1;
@end
.m
@implementation YourViewController
@synthesize label1;
/*
All of your code goes here
*/
@end
界面生成器
<小时/>
还将以下内容添加到您的 showActionSheet:
[datePicker addTarget:self
action:@selector(updateLabel:)
forControlEvents:UIControlEventValueChanged];
这应该会从 datePicker
更新您的标签:
-(void)updateLabel:(id)sender
{
NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
label1.text = [NSString stringWithFormat:@"%@",[df stringFromDate:datePicker.date]];
[df release];
/* the following allows you to choose the date components
NSCalendar *calendar = [NSCalendar currentCalendar];
int hour = [[calendar components:NSHourCalendarUnit fromDate:[datePicker date]] hour];
int minute = [[calendar components:NSMinuteCalendarUnit fromDate:[datePicker date]] minute];
int year = [[calendar components:NSYearCalendarUnit fromDate:[datePicker date]] year];
int month = [[calendar components:NSMonthCalendarUnit fromDate:[datePicker date]] month];
int day = [[calendar components:NSDayCalendarUnit fromDate:[datePicker date]] day];
*/
}
关于iphone - Xcode 保存要在标签中显示的 UIDatepicker,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4841205/