inputAccessoryViewController высота модификация

Question

Я пытаюсь использовать inputAccessoryViewController в своем приложении, но столкнулся с проблемой изменения высоты аксессуаров. Я попытался изменить рамки/рамки представления, я также попытался обработать высоту аксессуара, используя ограничения. Но ничего не получилось.

код InputViewController:

import UIKit 
import RxSwift 
import RxCocoa 


class InputViewController: UIInputViewController { 
    private var separatorView: UIView? 
    private var answerTextView: ConstrainedTextView? 
    private var closeButton: UIButton? 
    private var tipLabel: UILabel? 

// private var generalHeightConstraint: NSLayoutConstraint? 
    private var separatorHeightConstraint: NSLayoutConstraint? 
    private var answerTextViewBottomConstraint: NSLayoutConstraint? 

    private let junk = DisposeBag() 


    override func viewDidLoad() { 
     super.viewDidLoad() 

     configureView() 
    } 

    private func configureView() { 

//  view.autoresizingMask = .flexibleHeight 

     view.backgroundColor = UIColor.white 
     view.frame = CGRect(x: 0, y: 0, width: view.superview?.bounds.width ?? 100, height: 70) 
//  view.translatesAutoresizingMaskIntoConstraints = false 
//  generalHeightConstraint = AutoLayoutSetAttribute(view, .height, 70) 

     // Separator 

     separatorView = UIView() 
     separatorView?.backgroundColor = UIColor.gray 
     separatorView?.translatesAutoresizingMaskIntoConstraints = false 
     view.addSubview(separatorView!) 
     AutoLayoutEqualizeSuper(separatorView, .left, 0) 
     AutoLayoutEqualizeSuper(separatorView, .right, 0) 
     AutoLayoutEqualizeSuper(separatorView, .top, 0) 
     separatorHeightConstraint = AutoLayoutSetAttribute(separatorView, .height, 1) 

     // Close Button 

     closeButton = UIButton(type: .system) 
     closeButton?.setTitle("Hide", for: .normal) 
     closeButton?.titleLabel?.font = UIFont.systemFont(ofSize: 17) 
     closeButton?.translatesAutoresizingMaskIntoConstraints = false 
     closeButton?.addTarget(self, action: #selector(dismissKeyboard), for: .touchUpInside) 
     view.addSubview(closeButton!) 
     AutoLayoutSetAttribute(closeButton, .width, 70) 
     AutoLayoutEqualizeSuper(closeButton, .right, -5) 
     view.addConstraint(NSLayoutConstraint(item: closeButton!, attribute: .top, relatedBy: .equal, toItem: separatorView, attribute: .bottom, multiplier: 1, constant: 0)) 

     // Tip Label 

     tipLabel = UILabel() 
     tipLabel?.textColor = UIColor.darkGray 
     tipLabel?.text = "Input answer:" 
     tipLabel?.font = UIFont.systemFont(ofSize: 17) 
     tipLabel?.translatesAutoresizingMaskIntoConstraints = false 
     view.addSubview(tipLabel!) 
     AutoLayoutEqualizeSuper(tipLabel, .left, 5) 
     AutoLayoutEqualize(tipLabel, separatorView, .top, 0) 
     view.addConstraint(NSLayoutConstraint(item: tipLabel!, attribute: .right, relatedBy: .equal, toItem: closeButton, attribute: .left, multiplier: 1, constant: 0)) 

     // Text View 

     answerTextView = ConstrainedTextView() 
     answerTextView?.backgroundColor = UIColor.white 
     answerTextView?.delegate = self 
     answerTextView?.scrollsToTop = false 
     answerTextView?.showsVerticalScrollIndicator = false 
     answerTextView?.font = REG_FONT(15) 
     answerTextView?.maxLines = 5 
     answerTextView?.translatesAutoresizingMaskIntoConstraints = false 

     answerTextView?.layer.masksToBounds = true 
     answerTextView?.layer.cornerRadius = 7 

     answerTextView?.layer.borderColor = UIColor.lightGray.withAlphaComponent(0.7).cgColor 
     answerTextView?.layer.borderWidth = 1 

     view.addSubview(answerTextView!) 
     AutoLayoutEqualizeSuper(answerTextView, .left, 5) 
     AutoLayoutEqualizeSuper(answerTextView, .right, -5) 
     answerTextViewBottomConstraint = AutoLayoutEqualizeSuper(answerTextView, .bottom, -5) 
     view.addConstraint(NSLayoutConstraint(item: answerTextView!, attribute: .top, relatedBy: .equal, toItem: tipLabel, attribute: .bottom, multiplier: 1, constant: 0)) 
     view.addConstraint(NSLayoutConstraint(item: answerTextView!, attribute: .top, relatedBy: .equal, toItem: closeButton, attribute: .bottom, multiplier: 1, constant: 0)) 

     answerTextView? 
      .rx 
      .observe(CGRect.self, "bounds") 
      .distinctUntilChanged { 
       $0?.size.height == $1?.size.height 
      } 
      .subscribe { [unowned self] newBounds in 
       if var newHeight = newBounds.element??.size.height, 
        let separatorHeight = self.separatorHeightConstraint?.constant, 
        let buttonHeight = self.closeButton?.intrinsicContentSize.height, 
        let bottomSpace = self.answerTextViewBottomConstraint?.constant { 

        newHeight = newHeight == 0 ? 30 : newHeight 

        let generalHeight = newHeight + separatorHeight + buttonHeight + abs(bottomSpace) 

        self.view.frame = CGRect(x: 0, y: 0, width: self.view.superview?.bounds.width ?? 100, height: generalHeight) 
//     self.generalHeightConstraint?.constant = generalHeight 

//     UIView.animate(withDuration: 0.2) { 
//      self.view.setNeedsLayout() 
//      self.view.layoutIfNeeded() 
//     } 
       } 
      } 
      .addDisposableTo(junk) 
    } 
} 


// MARK: - UITextViewDelegate Protocol Conformance 

extension InputViewController: UITextViewDelegate { 

    func textViewShouldBeginEditing(_ textView: UITextView) -> Bool { 
     textView.inputAccessoryView = view 
     return true 
    } 

    func textViewShouldEndEditing(_ textView: UITextView) -> Bool { 
     textView.inputAccessoryView = nil 
     return true 
    } 

} 

View Controller, где используется входной аксессуар VC:

import UIKit 

class TestViewController: UIViewController { 
    override var inputAccessoryViewController: UIInputViewController? { 
     return SDAnswerInputViewController() 
    } 

    override var canBecomeFirstResponder: Bool { 
     return true 
    } 

    override func viewDidLoad() { 
     super.viewDidLoad() 
    } 
} 

Можете ли вы объяснить, как мне правильно изменять высоту входного зрения аксессуар переопределяя inputAccessoryViewController?

Answer 1

Проблема была в этих двух строках:

view.addConstraint(NSLayoutConstraint(item: answerTextView!, attribute: .top, relatedBy: .equal, toItem: tipLabel, attribute: .bottom, multiplier: 1, constant: 0)) 
view.addConstraint(NSLayoutConstraint(item: answerTextView!, attribute: .top, relatedBy: .equal, toItem: closeButton, attribute: .bottom, multiplier: 1, constant: 0)) 

answerTextView не может изменить его высота из-за ограничений в нижней и верхней части.