UIPickerView and UIDatePicker are not responding to interaction - ios

Question

I have a UITextField in a UITableView. I am trying to have a UIPickerView or a UIDatePicker as its input view. Both options are appearing and in case of UIPickerView, it is loading correct data. The problem is that it is not scrollable and user cannot interact with it, choose and scroll between the various options.
Userinteraction is set to yes, delegates are correct and everything is in place.
This is the code:
- (BOOL) textFieldShouldBeginEditing:(UITextField *)textField
{
UIDatePicker *datepicker = [[UIDatePicker alloc] initWithFrame:CGRectZero];
[datepicker setDatePickerMode:UIDatePickerModeDate];
textField.inputView = datepicker;
return YES;
}

Answer 1

Why are you set the inputView in this method?
Do this in viewDidLoad. This is a configuration,
doesn't make sense set a particular inputView each time the user focus on that textField:
- (void)viewDidLoad {
[super viewDidLoad];
UIDatePicker *datePicker = [[UIDatePicker alloc]init];
[datePicker setDate:[NSDate date]];
datePicker.datePickerMode = UIDatePickerModeDate;
[datePicker addTarget:self action:#selector(editTextField:) forControlEvents:UIControlEventValueChanged];
[textField setInputView:datePicker];
}
and then:
- (void)editTextField:(id)sender
{
UIDatePicker *picker = (UIDatePicker *)textField.inputView;
[picker setMaximumDate:[NSDate date]];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
NSDate *eventDate = picker.date;
[dateFormat setDateFormat:#"dd/MM/yyyy"];
NSString *dateString = [dateFormat stringFromDate:eventDate];
textField.text = [NSString stringWithFormat:#"%#",dateString];
}