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Merge pull request #230 from martinpucik/additionalInputViewBottomCon…
…straintConstant Added `additionalInputViewBottomConstraintConstant` to KeyboardManager
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71
Example/Sources/Example ViewControllers/AdditionalBottomSpaceExampleViewController.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| // | ||
| // AdditionalBottomSpaceExampleViewController.swift | ||
| // Example | ||
| // | ||
| // Created by Martin Púčik on 16.05.2022. | ||
| // Copyright © 2022 Nathan Tannar. All rights reserved. | ||
| // | ||
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| import Foundation | ||
| import UIKit | ||
| import InputBarAccessoryView | ||
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| final class AdditionalBottomSpaceExampleViewController: CommonTableViewController { | ||
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| private lazy var keyboardManager = KeyboardManager() | ||
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| private lazy var additionalBottomBar: UIView = { | ||
| let view = UIView() | ||
| view.backgroundColor = .systemBlue | ||
| view.translatesAutoresizingMaskIntoConstraints = false | ||
| return view | ||
| }() | ||
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| override func viewDidLoad() { | ||
| super.viewDidLoad() | ||
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| view.addSubview(inputBar) | ||
| view.addSubview(additionalBottomBar) | ||
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| NSLayoutConstraint.activate([ | ||
| additionalBottomBar.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor), | ||
| additionalBottomBar.leadingAnchor.constraint(equalTo: view.leadingAnchor), | ||
| additionalBottomBar.trailingAnchor.constraint(equalTo: view.trailingAnchor), | ||
| additionalBottomBar.heightAnchor.constraint(equalToConstant: 50) | ||
| ]) | ||
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| view.layoutIfNeeded() | ||
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| keyboardManager.additionalInputViewBottomConstraintConstant = { | ||
| var safeBottomInset: CGFloat = self.view.safeAreaInsets.bottom | ||
| if let windowBottomInset = UIApplication.shared.windows.first?.safeAreaInsets.bottom, | ||
| safeBottomInset != windowBottomInset { | ||
| safeBottomInset = windowBottomInset | ||
| } | ||
| return -(self.additionalBottomBar.frame.height + safeBottomInset) | ||
| } | ||
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| // Binding the inputBar will set the needed callback actions to position the inputBar on top of the keyboard | ||
| keyboardManager.bind(inputAccessoryView: inputBar) | ||
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| // Binding to the tableView will enabled interactive dismissal | ||
| keyboardManager.bind(to: tableView) | ||
| } | ||
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| override func viewWillDisappear(_ animated: Bool) { | ||
| super.viewWillDisappear(animated) | ||
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| /// This replicates instagram's behavior when commenting in a post. As of 2020-09, it appears like they have one of the best product experiences of this handling the keyboard when dismissing the UIViewController | ||
| self.inputBar.inputTextView.resignFirstResponder() | ||
| /// This is set because otherwise, if only partially dragging the left edge of the screen, and then cancelling the dismissal, on viewDidAppear UIKit appears to set the first responder back to the inputTextView (https://stackoverflow.com/a/41847448) | ||
| self.inputBar.inputTextView.canBecomeFirstResponder = false | ||
| } | ||
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| override func viewDidAppear(_ animated: Bool) { | ||
| super.viewDidAppear(animated) | ||
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| /// The opposite of `viewWillDisappear(_:)` | ||
| self.inputBar.inputTextView.canBecomeFirstResponder = true | ||
| self.inputBar.inputTextView.becomeFirstResponder() | ||
| } | ||
| } |
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