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May 2, 2017 23:09
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A view controller with scrolling that uses keyboard observing to shift input fields to remain above keyboard.
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class RegistrationViewController: UIViewController, KeyboardDisplayChangeProtocol, UITableViewDelegate, UITableViewDataSource { | |
public enum FormField: String { | |
case name = "Name" | |
case surname = "Surname" | |
case age = "Age" | |
case email = "Email" | |
case telephone = "Telephone" | |
case username = "Username" | |
case password = "Password" | |
} | |
@IBOutlet weak var tableView: KBTableView! | |
var formFields: [FormField] = [] | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
addFormFields() | |
tableView.estimatedRowHeight = 60 | |
tableView.rowHeight = UITableViewAutomaticDimension | |
tableView.tableFooterView = UIView(frame: .zero) | |
} | |
func addFormFields() { | |
formFields.append(.name) | |
formFields.append(.surname) | |
formFields.append(.age) | |
formFields.append(.email) | |
formFields.append(.telephone) | |
formFields.append(.username) | |
formFields.append(.password) | |
} | |
override func viewWillAppear(_ animated: Bool) { | |
super.viewWillAppear(animated) | |
addKeyboardObserver(on: view) | |
} | |
override func viewWillDisappear(_ animated: Bool) { | |
removeKeyboardObserver() | |
super.viewWillDisappear(animated) | |
} | |
func removeKeyboardObserver() { | |
tableView.removeKeyboardObserver() | |
} | |
func addKeyboardObserver(on view: UIView) { | |
tableView.addKeyboardObserver(on: view) | |
} | |
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat { | |
return 0 | |
} | |
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { | |
return formFields.count | |
} | |
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { | |
let cell = self.tableView.dequeueReusableCell(withIdentifier: CustomCell.identifier) as? CustomCell | |
let formField = formFields[indexPath.row] | |
cell?.configure(title: formField.rawValue) | |
return cell! | |
} | |
} |
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