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日付ピッカーから選択した日付をラベルに表示したかったのですが、ラベルには現在の日付が表示されるだけで、日付ピッカーから選択した日付は表示されません。これはコードです。テキストラベルをランダムに変更する方法を教えてください日付ピッカーから選択された日付

#import "ViewController.h"

@implementation ViewController
@synthesize datepicker,mylabel;


- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSDate *chosen = datepicker.date;
    NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
    formatter.dateStyle = NSDateFormatterMediumStyle;
    mylabel.text = [formatter stringFromDate:chosen];
     [formatter release];    

    // Do any additional setup after loading the view, typically from a nib.

}

- (void)viewDidUnload
{

    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
}

- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

@end
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1 に答える 1

4 
    // code for Date picker for current date

     datepicker=[[UIDatePicker alloc]initWithFrame:CGRectMake(0, 200, 320, 150)];
        //[self.view addSubview:datepicker];
        datepicker.date = [NSDate date];
        datepicker.datePickerMode=UIDatePickerModeDate;
        NSDateFormatter *df = [[NSDateFormatter alloc] init];
        df.timeStyle = NSDateFormatterNoStyle;

        label.text=[NSString stringWithFormat:@"%@",
                   [df stringFromDate:[NSDate date]]];
        df.dateFormat = @"yyyy-MM-dd";

    // set action for date picker

       [datepicker addTarget:self  action:@selector(DateChange:)
            forControlEvents:UIControlEventValueChanged];

    //method for change date

    - (void)DateChange:(id)sender
{
        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
        [dateFormatter setDateFormat:@"dd-MM-yyyy"];
        label.text = [dateFormatter stringFromDate:datepicker.date];
        date.text=strDate;
}
于 2012-10-24T08:17:00.710 に答える