Question

I am using the approach described in this stackoverflow posting to retrieve values from a textfield. My problem is that the tableview is presented modally and I have a save button that validates the input and stores it.

The problem is that the textFieldDidEndEditing method is not called when the user clicks an UIBarButtonItem (= the save button, which closes the modal view).

In this event (when the user wants to save the input) I would like to validate it. But the values are stored in properties in the textFieldDidEndEditing. Due to the fact that this method is not called, I cannot validate the input values correctly.

Does anyone have a hint or solution on this?

Thanks in advance!

Answer 1

Okay, here we go:

Thanks to @Lefteris and his idea with storing the current index. Due to the fact that I cannot store the index into the tag attribute I decided to store the active indexPath and additionally the active textField. (I know, a reference to the UITextField would have been enough but I needed it for other stuff)

First I have added these two properties:

@property (nonatomic, strong) NSIndexPath *activeIndexPath;
@property (nonatomic, strong) UITextField *activeTextField;

Then I implemented textFieldDidBeginEditing: and textFieldDidEndEditing: of UITextFieldDelegate.

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    NSIndexPath *indexPath = (NSIndexPath*)[self.tableView indexPathForCell:(UITableViewCell*)[[textField superview] superview]];

    self.activeTextField = textField;
    self.activeIndexPath = indexPath;
}

- (void)textFieldDidEndEditing:(UITextField *)textField 
{
    NSString *input = textField.text;    

    //assuming values from input textfield into corresponding properties
    [self assumeInput:input withIndexPath:self.activeIndexPath];

    self.activeTextField = nil;
    self.activeTextField = nil;
}

In textFieldDidEndEditing: I am storing the values into my properties (such as self.firstName, self.lastName, and so on…) by using the method [self assumeInput:input withIndexPath:self.activeIndexPath];.

In my saveAction-Method I am storing the value from the currently active TextField.

- (IBAction)saveButtonClicked:(UIBarButtonItem *)sender 
{    
    //assuming input from active field (didEndEditing _not_ called right now!)
    [self assumeInput:self.activeTextField.text withIndexPath:self.activeIndexPath];

    //test output
    NSLog(@"firstName: %@", self.firstName);
    NSLog(@"lastName: %@", self.lastName);
    NSLog(@"email: %@", self.email);
    ...
}

… and that’s it!

Hope it helps! Thanks to @Lefteris for his input.

Best,
Chris