Swift コードエラー

Question

###前提・実現したいこと
エラーを解決したい
###発生している問題・エラーメッセージ

thread1 signal  SIGABRT

###該当のソースコード

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        
        let notificationCenter = NotificationCenter.default
        notificationCenter.addObserver(self, selector: Selector(("handleKeyboardWillShowNotification:")), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
        notificationCenter.addObserver(self, selector: Selector(("handleKeyboardWillHideNotification:")), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
    }
    
    override func viewDidDisappear(_ animated: Bool) {
        super.viewDidDisappear(animated)
        
        let notificationCenter = NotificationCenter.default
        notificationCenter.removeObserver(self, name: NSNotification.Name.UIKeyboardWillShow, object: nil)
        notificationCenter.removeObserver(self, name: NSNotification.Name.UIKeyboardWillHide, object: nil)
    }
    

###試したこと
viewDidDisappear,viewWillappearを実行すると上記のエラーが出てきます
###補足情報
より詳細な情報
ここのサイト、githubを参考に練習しました。
URL
http://hayashi-rin.net/post-388
http://ameblo.jp/hayashidesuga/entry-11971210696.html

Github
https://github.com/hayashidesu/TextViewSample/blob/master/TextViewSample/ViewController.swift

Answer 1

以下のように変更して試してみてください。

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    
    let notificationCenter = NotificationCenter.default
    notificationCenter.addObserver(
        self,
        selector: #selector(self.handleKeyboardWillShowNotification(notification:)),
        name: Notification.Name.UIKeyboardWillShow,
        object: nil
    )
    
    notificationCenter.addObserver(
        self,
        selector: #selector(self.handleKeyboardWillHideNotification(notification:)),
        name: Notification.Name.UIKeyboardWillHide,
        object: nil
    )
}

func handleKeyboardWillShowNotification(notification: NSNotification) {
    print("handleKeyboardWillShowNotification")
}

func handleKeyboardWillHideNotification(notification: NSNotification) {
    print("handleKeyboardWillHideNotification")
}

Comments

[sweden1]

func handleKeyboardWillShowNotification(notification: NSNotification) {

let userInfo = notification.userInfo!
let keyboardScreenEndFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
let myBoundSize: CGSize = UIScreen.main.bounds.size

let txtLimit = txtActiveField.frame.origin.y + txtActiveField.frame.height + 8.0
let kbdLimit = myBoundSize.height - keyboardScreenEndFrame.size.height

print("テキストフィールドの下辺:\(txtLimit)")
print("キーボードの上辺:\(kbdLimit)")

if txtLimit >= kbdLimit {
textview.contentOffset.y = txtLimit - kbdLimit
}
}

func handleKeyboardWillHideNotification(notification: NSNotification) {
textview.contentOffset.y = 0
}
func textFieldShouldBeginEditing(textField: UITextField!) -> Bool {
txtActiveField = textField
return true
}

func textFieldShouldReturn(textField: UITextField!) -> Bool {
self.view.endEditing(true)
return true
}

override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)

let notificationCenter = NotificationCenter.default
notificationCenter.addObserver(self, selector: Selector(("handleKeyboardWillShowNotification:")), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
notificationCenter.addObserver(self, selector: Selector(("handleKeyboardWillHideNotification:")), name: NSNotification.Name.UIKeyboardWillHide, object: nil)

notificationCenter.addObserver(
self,
selector: #selector(self.handleKeyboardWillHideNotification(notification:)),
name: Notification.Name.UIKeyboardWillHide,
object: nil
)
}

Syntax エラーはないんですけどね。。。
やはりこれが出ます

[sweden1]

ご返信していただけると幸いです

[_Kentarou]

そもそもですがXcode, Swiftのバージョンはいくつになりますか？

Answer 2

環境がないので試してもらうことになりますが、nameの指定のところを、

.UIKeyboardWillShow
.UIKeyboardWillHide

と、ピリオド以下だけにするとどうなるでしょうか？