Yanıtlar:
Swift'de:
UIKeyboardWillShowNotification
Bildirime abone olarak klavye yüksekliğini öğrenebilirsiniz . (Gösterilmeden önce yüksekliğin ne olacağını bilmek istediğinizi varsayarsak).
Bunun gibi bir şey:
NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillShow:", name: UIKeyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(
self,
selector: #selector(keyboardWillShow),
name: NSNotification.Name.UIKeyboardWillShow,
object: nil
)
NotificationCenter.default.addObserver(
self,
selector: #selector(keyboardWillShow),
name: UIResponder.keyboardWillShowNotification,
object: nil
)
Ardından, aşağıdaki keyboardWillShow
gibi işlevde yüksekliğe erişebilirsiniz :
func keyboardWillShow(notification: NSNotification) {
let userInfo: NSDictionary = notification.userInfo!
let keyboardFrame: NSValue = userInfo.valueForKey(UIKeyboardFrameEndUserInfoKey) as! NSValue
let keyboardRectangle = keyboardFrame.CGRectValue()
let keyboardHeight = keyboardRectangle.height
}
@objc func keyboardWillShow(_ notification: Notification) {
if let keyboardFrame: NSValue = notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue {
let keyboardRectangle = keyboardFrame.cgRectValue
let keyboardHeight = keyboardRectangle.height
}
}
@objc func keyboardWillShow(_ notification: Notification) {
if let keyboardFrame: NSValue = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue {
let keyboardRectangle = keyboardFrame.cgRectValue
let keyboardHeight = keyboardRectangle.height
}
}
UIResponder.keyboardWillShowNotification
isim
1- viewWillAppear
Yönteme bildirimi kaydedin:
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name: .UIKeyboardWillShow, object: nil)
2- Aranacak yöntem:
@objc func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
let keyboardHeight = keyboardSize.height
print(keyboardHeight)
}
}
keyboardWillShow
parametrenin tipine sahip olabilirsiniz Notification
.
viewDidLoad
iyi bir fikir değildir: eşleşen removeObserver
aramayı nereye koyarsınız, böylece bu VC artık gösterilmediğinde, bildirim almayı durdurur? Bildirimler için kaydı koymak viewWillAppear
ve ardından removeObserver
aramayı yapmak daha viewWillDisappear
Swift 4 ve Kısıtlamalar
Tablo görünümünüze, alt güvenli alana göre bir alt sınırlama ekleyin. Benim durumumda kısıtlama tableViewBottomLayoutConstraint olarak adlandırılır.
@IBOutlet weak var tableViewBottomLayoutConstraint: NSLayoutConstraint!
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillAppear(notification:)), name: .UIKeyboardWillShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillDisappear(notification:)), name: .UIKeyboardWillHide, object: nil)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
NotificationCenter.default.removeObserver(self, name: .UIKeyboardWillShow , object: nil)
NotificationCenter.default.removeObserver(self, name: .UIKeyboardWillHide , object: nil)
}
@objc
func keyboardWillAppear(notification: NSNotification?) {
guard let keyboardFrame = notification?.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue else {
return
}
let keyboardHeight: CGFloat
if #available(iOS 11.0, *) {
keyboardHeight = keyboardFrame.cgRectValue.height - self.view.safeAreaInsets.bottom
} else {
keyboardHeight = keyboardFrame.cgRectValue.height
}
tableViewBottomLayoutConstraint.constant = keyboardHeight
}
@objc
func keyboardWillDisappear(notification: NSNotification?) {
tableViewBottomLayoutConstraint.constant = 0.0
}
Swift 4.2'yi güncelleyin
private func setUpObserver() {
NotificationCenter.default.addObserver(self, selector: .keyboardWillShow, name: UIResponder.keyboardWillShowNotification, object: nil)
}
seçici yöntem:
@objc fileprivate func keyboardWillShow(notification:NSNotification) {
if let keyboardRectValue = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
let keyboardHeight = keyboardRectValue.height
}
}
uzantı:
private extension Selector {
static let keyboardWillShow = #selector(YourViewController.keyboardWillShow(notification:))
}
Swift 3.0'ı güncelleyin
private func setUpObserver() {
NotificationCenter.default.addObserver(self, selector: .keyboardWillShow, name: .UIKeyboardWillShow, object: nil)
}
seçici yöntem:
@objc fileprivate func keyboardWillShow(notification:NSNotification) {
if let keyboardRectValue = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
let keyboardHeight = keyboardRectValue.height
}
}
uzantı:
private extension Selector {
static let keyboardWillShow = #selector(YourViewController.keyboardWillShow(notification:))
}
İpucu
UIKeyboardDidShowNotification veya UIKeyboardWillShowNotification iki kez çağrılabilir ve farklı sonuçlar alabilir, bu makale neden iki kez çağrıldığını açıkladı.
Swift 2.2'de
Swift 2.2 karşı çıkan seçiciler için dizeleri kullanılarak yerine yeni bir sözdizimi tanıtır: #selector
.
Gibi bir şey:
private func setUpObserver() {
NSNotificationCenter.defaultCenter().addObserver(self, selector: .keyboardWillShow, name: UIKeyboardWillShowNotification, object: nil)
}
seçici yöntem:
@objc private func keyboardWillShow(notification:NSNotification) {
let userInfo:NSDictionary = notification.userInfo!
let keyboardFrame:NSValue = userInfo.valueForKey(UIKeyboardFrameEndUserInfoKey) as! NSValue
let keyboardRectangle = keyboardFrame.CGRectValue()
let keyboardHeight = keyboardRectangle.height
editorBottomCT.constant = keyboardHeight
}
uzantı:
private extension Selector {
static let keyboardWillShow = #selector(YourViewController.keyboardWillShow(_:))
}
Burada daha kısa versiyon:
func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
let keyboardHeight = keyboardSize.height
}
}
Hızlı 4 .
En Basit Yöntem
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name: .UIKeyboardWillShow, object: nil)
}
func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
let keyboardHeight : Int = Int(keyboardSize.height)
print("keyboardHeight",keyboardHeight)
}
}
override func viewDidLoad() {
// Registering for keyboard notification.
NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillShow(_:)), name: UIResponder.keyboardWillShowNotification, object: nil)
}
/* UIKeyboardWillShowNotification. */
@objc internal func keyboardWillShow(_ notification : Notification?) -> Void {
var _kbSize:CGSize!
if let info = notification?.userInfo {
let frameEndUserInfoKey = UIResponder.keyboardFrameEndUserInfoKey
// Getting UIKeyboardSize.
if let kbFrame = info[frameEndUserInfoKey] as? CGRect {
let screenSize = UIScreen.main.bounds
//Calculating actual keyboard displayed size, keyboard frame may be different when hardware keyboard is attached (Bug ID: #469) (Bug ID: #381)
let intersectRect = kbFrame.intersection(screenSize)
if intersectRect.isNull {
_kbSize = CGSize(width: screenSize.size.width, height: 0)
} else {
_kbSize = intersectRect.size
}
print("Your Keyboard Size \(_kbSize)")
}
}
}
// 1. Adım: - NotificationCenter'ı Kaydedin
ViewDidLoad() {
self.yourtextfield.becomefirstresponder()
// Register your Notification, To know When Key Board Appears.
NotificationCenter.default.addObserver(self, selector: #selector(SelectVendorViewController.keyboardWillShow(notification:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
// Register your Notification, To know When Key Board Hides.
NotificationCenter.default.addObserver(self, selector: #selector(SelectVendorViewController.keyboardWillHide(notification:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
// 2. Adım: - Klavye göründüğünde veya Gizlendiğinde bu Yöntemler Otomatik olarak çağrılacaktır
func keyboardWillShow(notification:NSNotification) {
let userInfo:NSDictionary = notification.userInfo! as NSDictionary
let keyboardFrame:NSValue = userInfo.value(forKey: UIKeyboardFrameEndUserInfoKey) as! NSValue
let keyboardRectangle = keyboardFrame.cgRectValue
let keyboardHeight = keyboardRectangle.height
tblViewListData.frame.size.height = fltTblHeight-keyboardHeight
}
func keyboardWillHide(notification:NSNotification) {
tblViewListData.frame.size.height = fltTblHeight
}
Xcode 10'da Swift 5 için güncellenen ZAFAR007 yöntemi
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name: UIResponder.keyboardWillShowNotification, object: nil)
}
@objc func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIResponder.keyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
let keyboardHeight : Int = Int(keyboardSize.height)
print("keyboardHeight",keyboardHeight)
}
}
Bunu yapmak zorundaydım. bu biraz bilgisayar korsanlığı. önerilmiyor.
ancak bunu çok yararlı
buldum uzantı ve yapı
ViewController Uzantısı + Struct
import UIKit
struct viewGlobal{
static var bottomConstraint : NSLayoutConstraint = NSLayoutConstraint()
}
extension UIViewController{ //keyboardHandler
func hideKeyboardWhenTappedAround() {
let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(dismissKeyboard))
tap.cancelsTouchesInView = false
view.addGestureRecognizer(tap)
}
func listenerKeyboard(bottomConstraint: NSLayoutConstraint) {
viewGlobal.bottomConstraint = bottomConstraint
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(notification:)), name: UIResponder.keyboardWillShowNotification, object: nil)
// Register your Notification, To know When Key Board Hides.
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(notification:)), name: UIResponder.keyboardWillHideNotification, object: nil)
}
//Dismiss Keyboard
@objc func dismissKeyboard() {
view.endEditing(true)
}
@objc func keyboardWillShow(notification:NSNotification) {
let userInfo:NSDictionary = notification.userInfo! as NSDictionary
let keyboardFrame:NSValue = userInfo.value(forKey: UIResponder.keyboardFrameEndUserInfoKey) as! NSValue
let keyboardRectangle = keyboardFrame.cgRectValue
let keyboardHeight = keyboardRectangle.height
UIView.animate(withDuration: 0.5){
viewGlobal.bottomConstraint.constant = keyboardHeight
}
}
@objc func keyboardWillHide(notification:NSNotification) {
UIView.animate(withDuration: 0.5){
viewGlobal.bottomConstraint.constant = 0
}
}
}
Kullanım:
en alt kısıtlamayı alın
@IBOutlet weak var bottomConstraint: NSLayoutConstraint! // default 0
viewDidLoad () içindeki işlevi çağırın
override func viewDidLoad() {
super.viewDidLoad()
hideKeyboardWhenTappedAround()
listenerKeyboard(bottomConstraint: bottomConstraint)
// Do any additional setup after loading the view.
}
Umarım bu yardımcı olur.
-Kullanıcı metin alanının dışına dokunduğunda klavyeniz artık otomatik olarak kapanacak ve
- klavye göründüğünde tüm görünümü klavyenin üstüne itecektir .
-sen de kullanılabilir olabilir dismissKeyboard () ihtiyacınız olduğunda hiç
Aşağıdaki kodu kullanıyorum,
override func viewDidLoad() {
super.viewDidLoad()
self.registerObservers()
}
func registerObservers(){
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillAppear(notification:)), name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(notification:)), name: UIResponder.keyboardWillHideNotification, object: nil)
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
self.view.endEditing(true)
}
@objc func keyboardWillAppear(notification: Notification){
if let keyboardFrame: NSValue = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue {
let keyboardRectangle = keyboardFrame.cgRectValue
let keyboardHeight = keyboardRectangle.height
self.view.transform = CGAffineTransform(translationX: 0, y: -keyboardHeight)
}
}
@objc func keyboardWillHide(notification: Notification){
self.view.transform = .identity
}