(50)using datepicker add birth date into textfield in ios

.h

@interface CustomKeyboardAppDelegate : NSObject <UIApplicationDelegate> {

...

@property (nonatomic, retain) IBOutlet UIWindow *window;

@property (nonatomic, retain) IBOutlet UITextField *textField;

@property (nonatomic, retain) IBOutlet UIToolbar *accessoryView;

@property (nonatomic, retain) IBOutlet UIDatePicker *customInput;

- (IBAction)dateChanged:(id)sender;

- (IBAction)doneEditing:(id)sender;

@end

.m

@implementation CustomKeyboardAppDelegate

@synthesize window=_window;

@synthesize textField = _textField;

@synthesize accessoryView = _accessoryView;

@synthesize customInput = _customInput;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

    self.textField.inputView = self.customInput;

    self.textField.inputAccessoryView = self.accessoryView;

    ...   

}

...

- (IBAction)dateChanged:(id)sender {

    UIDatePicker *picker = (UIDatePicker *)sender;

    self.textField.text = [NSString stringWithFormat:@"%@", picker.date];

}

- (IBAction)doneEditing:(id)sender {

    [self.textField resignFirstResponder];

}

@end

Second way

      - (void)textFieldDidBeginEditing:(UITextField *)sender

        {

            sender.delegate = self;

                if([sender isEqual:dateFieldText])

                {

                    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc]

                                               initWithTitle:@"Save Date"

                                               style:UIBarButtonItemStyleDone

                                               target:self

                                               action:@selector(datePicker)];

                self.navigationItem.rightBarButtonItem = doneButton;

            }

            else{

                UIBarButtonItem *submitButton = [[UIBarButtonItem alloc]

                                               initWithTitle:@"Done"

                                               style:UIBarButtonItemStyleDone

                                               target:self

                                               action:@selector(datePicker)];

                self.navigationItem.rightBarButtonItem = submitButton;

            } 

        }

    -(IBAction)datePicker

    {

        UIDatePicker *datePicker = [[UIDatePicker alloc] init];

        datePicker.datePickerMode = UIDatePickerModeDateAndTime;

        [datePicker addTarget:self action:@selector(saveDate)  forControlEvents:UIControlEventValueChanged];

        [self.dateFieldText setInputView:datePicker];

    }