Managing Multiple Input TextFields in Objective-C with Dynamic Constraints
Quick question that's been bugging me - I'm working on an iOS app using Objective-C, and I'm working with an scenario while trying to adjust the layout dynamically when the user is editing multiple `UITextField` instances stacked vertically. I have a vertical stack view containing several text fields, and I want to add some constraints to ensure they resize and reposition correctly as the text field's content changes. However, when I attempt to change the height of the stack view based on the number of characters in the active text field, I notice that the layout doesn't update as expected. For instance, if a user types in a `UITextField`, I want to recalculate the height of the stack view and refresh the layout, but nothing seems to change visually. I've tried using `setNeedsLayout` and `layoutIfNeeded`, but I still get the behavior: `want to modify constraints while engine is running`. Here's a simplified version of my code: ```objc - (void)textFieldDidBeginEditing:(UITextField *)textField { [self adjustStackViewHeightForTextField:textField]; } - (void)adjustStackViewHeightForTextField:(UITextField *)textField { CGFloat newHeight = MAX(44, textField.contentSize.height); NSLayoutConstraint *heightConstraint = [self.stackView.constraints firstObject]; heightConstraint.constant = newHeight; [self.stackView setNeedsLayout]; [self.view layoutIfNeeded]; } ``` Despite this, the height of the stack view remains unchanged, and I still encounter the layout issues. I'm not sure if I'm applying the constraints correctly or if there's a better approach to achieve the dynamic resizing of the stack view based on user input. Any insights would be greatly appreciated! How would you solve this?