iOSでキーボードが表示されたらUIViewを上に移動します

Question

UIViewがありますが、UIScrollView内にはありません。キーボードが表示されたら、ビューを上に移動したいと思います。このソリューションを使用する前に、 キーボードが存在するときにUITextFieldを上に移動するにはどうすればよいですか？ 。

それはうまく機能していました。しかし、テキストフィールドにデータを挿入した後、別のビューに移動します。このページに戻ると、ジャンプしてしまい、テキストフィールドが表示されませんでした。この問題のより良い解決策はありますか？

Answer 1

キーボードの表示と非表示を切り替えるには、次のコードを使用します

//Declare a delegate, assign your textField to the delegate and then include these methods

-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
    return YES;
}


- (BOOL)textFieldShouldEndEditing:(UITextField *)textField {
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil];

    [self.view endEditing:YES];
    return YES;
}


- (void)keyboardDidShow:(NSNotification *)notification
{
    // Assign new frame to your view 
    [self.view setFrame:CGRectMake(0,-110,320,460)]; //here taken -110 for example i.e. your view will be scrolled to -110. change its value according to your requirement.

}

-(void)keyboardDidHide:(NSNotification *)notification
{
    [self.view setFrame:CGRectMake(0,0,320,460)];
}

Answer 2

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}

#pragma mark - keyboard movements
- (void)keyboardWillShow:(NSNotification *)notification
{
    CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

    [UIView animateWithDuration:0.3 animations:^{
        CGRect f = self.view.frame;
        f.Origin.y = -keyboardSize.height;
        self.view.frame = f;
    }];
}

-(void)keyboardWillHide:(NSNotification *)notification
{
    [UIView animateWithDuration:0.3 animations:^{
        CGRect f = self.view.frame;
        f.Origin.y = 0.0f;
        self.view.frame = f;
    }];
}

Answer 3

ビューをキーボードにバインドすることもオプションです（回答の下部にあるGIFを参照）

スイフト4

拡張機能を使用する：（完全にはテストされていませんでした）

extension UIView{
    func bindToKeyboard(){
        NotificationCenter.default.addObserver(self, selector: #selector(UIView.keyboardWillChange(notification:)), name: Notification.Name.UIKeyboardWillChangeFrame, object: nil)
    }

    func unbindToKeyboard(){
        NotificationCenter.default.removeObserver(self, name: Notification.Name.UIKeyboardWillChangeFrame, object: nil)
    }
    @objc
    func keyboardWillChange(notification: Notification) {
        let duration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
        let curve = notification.userInfo![UIKeyboardAnimationCurveUserInfoKey] as! UInt
        let curFrame = (notification.userInfo![UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
        let targetFrame = (notification.userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
        let deltaY = targetFrame.Origin.y - curFrame.Origin.y

        UIView.animateKeyframes(withDuration: duration, delay: 0.0, options: UIViewKeyframeAnimationOptions(rawValue: curve), animations: {
            self.frame.Origin.y+=deltaY

        },completion: nil)

    }
}

スイフト2 + 3

拡張機能を使用します。

extension UIView{
    func bindToKeyboard(){
        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(UIView.keyboardWillChange(_:)), name: UIKeyboardWillChangeFrameNotification, object: nil)
    }


    func keyboardWillChange(notification: NSNotification) {

        let duration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
        let curve = notification.userInfo![UIKeyboardAnimationCurveUserInfoKey] as! UInt
        let curFrame = (notification.userInfo![UIKeyboardFrameBeginUserInfoKey] as! NSValue).CGRectValue()
        let targetFrame = (notification.userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).CGRectValue()
        let deltaY = targetFrame.Origin.y - curFrame.Origin.y


        UIView.animateKeyframesWithDuration(duration, delay: 0.0, options: UIViewKeyframeAnimationOptions(rawValue: curve), animations: {
                self.frame.Origin.y+=deltaY

        },completion: nil)

    }  
}

使用法：

// view did load...
textField.bindToKeyboard()

...

// view unload
textField.unbindToKeyboard()

結果：

重要
ビューがアンロードされているときにオブザーバーを削除することを忘れないでください

Answer 4

theDuncs answer が非常に便利で、以下に独自の（リファクタリングされた）バージョンがあります。

---

主な変更点

1. ハードコーディング値ではなく、キーボードサイズを動的に取得
2. UIView Animationを独自のメソッドに抽出し、 重複コードの防止
3. ハードコードされるのではなく、メソッドに渡される期間を許可

---

- (void)viewWillAppear:(BOOL)animated {
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}

- (void)viewWillDisappear:(BOOL)animated {
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}

---

- (void)keyboardWillShow:(NSNotification *)notification {
    CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;

    float newVerticalPosition = -keyboardSize.height;

    [self moveFrameToVerticalPosition:newVerticalPosition forDuration:0.3f];
}


- (void)keyboardWillHide:(NSNotification *)notification {
    [self moveFrameToVerticalPosition:0.0f forDuration:0.3f];
}


- (void)moveFrameToVerticalPosition:(float)position forDuration:(float)duration {
    CGRect frame = self.view.frame;
    frame.Origin.y = position;

    [UIView animateWithDuration:duration animations:^{
        self.view.frame = frame;
    }];
}

Answer 5

Daniel Kromのソリューションに基づいています。これはSwift 3.のバージョンです。 AutoLayoutでうまく機能し、キーボードが表示されたときにビュー全体を移動します。

extension UIView {

    func bindToKeyboard(){
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange), name: NSNotification.Name.UIKeyboardWillChangeFrame, object: nil)
    }

    func unbindFromKeyboard(){
        NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIKeyboardWillChangeFrame, object: nil)
    }

    @objc
    func keyboardWillChange(notification: NSNotification) {

        guard let userInfo = notification.userInfo else { return }

        let duration = userInfo[UIKeyboardAnimationDurationUserInfoKey] as! Double
        let curve = userInfo[UIKeyboardAnimationCurveUserInfoKey] as! UInt
        let curFrame = (userInfo[UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
        let targetFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
        let deltaY = targetFrame.Origin.y - curFrame.Origin.y

        UIView.animateKeyframes(withDuration: duration, delay: 0.0, options: UIViewKeyframeAnimationOptions(rawValue: curve), animations: {
            self.frame.Origin.y += deltaY
        })
    }  
}

使用方法：bindToKeyboardにviewDidLoad関数を追加します。

override func viewDidLoad() {
    super.viewDidLoad()

    view.bindToKeyboard()
}

そして、unbindFromKeyboard関数をdeinitに追加します。

deinit {
    view.unbindFromKeyboard()
}

Answer 6

KeyBoardに関連するすべての問題については、IQKeyBoardManagerを使用するだけで役立ちます。 https://github.com/hackiftekhar/IQKeyboardManager 。

Answer 7

これを試してください：-

 [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector (keyboardDidShow:)
                                                 name: UIKeyboardDidShowNotification object:nil];


[[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector (keyboardDidHide:)
                                                 name: UIKeyboardDidHideNotification object:nil];

-(void) keyboardDidShow: (NSNotification *)notif
    {
        CGSize keyboardSize = [[[notif userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
        UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, keyboardSize.height+[self getTableView].tableFooterView.frame.size.height, 0.0);

        [self getTableView].contentInset = contentInsets;
        [self getTableView].scrollIndicatorInsets = contentInsets;

        CGRect rect = self.frame; rect.size.height -= keyboardSize.height;
        if (!CGRectContainsPoint(rect, self.frame.Origin))
        {
            CGPoint scrollPoint = CGPointMake(0.0, self.frame.Origin.y - (keyboardSize.height - self.frame.size.height));
            [[self getTableView] setContentOffset:scrollPoint animated:YES];
        }
    }

-(void) keyboardDidHide: (NSNotification *)notif
{
    UIEdgeInsets contentInsets = UIEdgeInsetsZero;
    [self getTableView].contentInset = contentInsets;
    [self getTableView].scrollIndicatorInsets = contentInsets;
}

Answer 8

theDuncの答え に基づきますが、AutolayoutでSwiftに記述されています。

@IBOutlet weak var bottomConstraint: NSLayoutConstraint! // connect the bottom of the view you want to move to the bottom layout guide

override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)
    NSNotificationCenter.defaultCenter().addObserver(self,
                                                     selector: #selector(ConversationViewController.keyboardWillShow(_:)),
                                                     name: UIKeyboardWillShowNotification,
                                                     object: nil)

    NSNotificationCenter.defaultCenter().addObserver(self,
                                                     selector: #selector(ConversationViewController.keyboardWillHide(_:)),
                                                     name: UIKeyboardWillHideNotification,
                                                     object: nil)
}

override func viewWillDisappear(animated: Bool) {
    NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillShowNotification, object: nil)
    NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillHideNotification, object: nil)
    super.viewWillDisappear(animated)
}

// MARK: - Keyboard events

func keyboardWillShow(notification: NSNotification) {
    if let userInfo = notification.userInfo,
        keyboardFrame = userInfo[UIKeyboardFrameBeginUserInfoKey]
    {
        let keyboardSize = keyboardFrame.CGRectValue().size
        self.bottomConstraint.constant = keyboardSize.height
        UIView.animateWithDuration(0.3) {
            self.view.layoutIfNeeded()
        }
    }
}

func keyboardWillHide(notification: NSNotification) {
    self.bottomConstraint.constant = 0
    UIView.animateWithDuration(0.3) {
        self.view.layoutIfNeeded()
    }
}

Answer 9

オブザーバー通知を追加しないシンプルなソリューション

-(void)setViewMovedUp:(BOOL)movedUp
{
    [UIView beginAnimations:nil context:NULL];

    [UIView setAnimationDuration:0.3]; // if you want to slide up the view

    CGRect rect = self.view.frame;

    if (movedUp)
    {
        // 1. move the view's Origin up so that the text field that will be hidden come above the keyboard
        // 2. increase the size of the view so that the area behind the keyboard is covered up.
        rect.Origin.y -= kOFFSET_FOR_KEYBOARD;
        rect.size.height += kOFFSET_FOR_KEYBOARD;
    }
    else
    {
        // revert back to the normal state.
        rect.Origin.y += kOFFSET_FOR_KEYBOARD;
        rect.size.height -= kOFFSET_FOR_KEYBOARD;
    }
    self.view.frame = rect;

    [UIView commitAnimations];
}


-(void)textFieldDidEndEditing:(UITextField *)sender
{
     if  (self.view.frame.Origin.y >= 0)
        {
            [self setViewMovedUp:NO];
        }
}

-(void)textFieldDidBeginEditing:(UITextField *)sender
{
        //move the main view, so that the keyboard does not hide it.
        if  (self.view.frame.Origin.y >= 0)
        {
            [self setViewMovedUp:YES];
        }
}

どこ

#define kOFFSET_FOR_KEYBOARD 80.0

Answer 10

キーボードのサイズを動的に計算するカスタムコントローラーを実装し、デバイスの回転中でもtextFieldsが表示および非表示になったらスクロールします。すべてのiOSデバイスで動作します。コントローラーを継承するだけで、必要なものが手に入ります。次のリンクですべての手順を確認できます： https://github.com/mikthebig/ios-textfield-scroll

Answer 11

スイフト5

上記のDaniel Kromによる回答の更新版：

extension UIView {

    func bindToKeyboard() {
        NotificationCenter.default.addObserver(
            self,
            selector: #selector(UIView.keyboardWillChange(notification:)),
            name: UIResponder.keyboardWillChangeFrameNotification,
            object: nil
        )
    }

    func unbindToKeyboard() {
        NotificationCenter.default.removeObserver(
            self,
            name: UIResponder.keyboardWillChangeFrameNotification,
            object: nil
        )
    }

    @objc func keyboardWillChange(notification: Notification) {
        let duration = notification.userInfo![UIResponder.keyboardAnimationDurationUserInfoKey] as! Double
        let curve = notification.userInfo![UIResponder.keyboardAnimationCurveUserInfoKey] as! UInt
        let curFrame = (notification.userInfo![UIResponder.keyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
        let targetFrame = (notification.userInfo![UIResponder.keyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
        let deltaY = targetFrame.Origin.y - curFrame.Origin.y

        UIView.animateKeyframes(withDuration: duration, delay: 0.0, options: UIView.KeyframeAnimationOptions(rawValue: curve), animations: {
            self.frame.Origin.y += deltaY
        })
    }

}

Answer 12

Swift 4

NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange), name: .UIKeyboardWillChangeFrame, object: nil)

@objc func keyboardWillChange(notification: NSNotification) {

        let duration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
        let curve = notification.userInfo![UIKeyboardAnimationCurveUserInfoKey] as! UInt
        let curFrame = (notification.userInfo![UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
        let targetFrame = (notification.userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
        let deltaY = targetFrame.Origin.y - curFrame.Origin.y

        UIView.animateKeyframes(withDuration: duration, delay: 0.0, options: UIViewKeyframeAnimationOptions(rawValue: curve), animations: {
            self.YourView.frame.Origin.y+=deltaY
        },completion: nil)
    }

Answer 13

どうぞ。ただし、このコードはUIViewで使用しました。 scrollviewのこれらの調整を行うことができるはずです。

    func addKeyboardNotifications() {
        NotificationCenter.default.addObserver(self,
                                               selector: #selector(keyboardWillShow(notification:)),
                                               name: NSNotification.Name.UIKeyboardWillShow, object: nil)
        NotificationCenter.default.addObserver(self,
                                               selector: #selector(keyboardWillHide(notification:)),
                                               name: NSNotification.Name.UIKeyboardWillHide, object: nil)
    }

    func keyboardWillShow(notification: NSNotification) {

        if let keyboardSize = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
            let duration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
// if using constraints            
// bottomViewBottomSpaceConstraint.constant = keyboardSize.height
self.view.frame.Origin.y -= keyboardSize.height
            UIView.animate(withDuration: duration) {
                self.view.layoutIfNeeded()
            }
        }
    }
    func keyboardWillHide(notification: NSNotification) {

        let duration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
//if using constraint
//        bottomViewBottomSpaceConstraint.constant = 0
self.view.frame.Origin.y = 0
        UIView.animate(withDuration: duration) {
            self.view.layoutIfNeeded()
        }
    }

適切な場所で通知を削除することを忘れないでください。

func removeKeyboardNotifications() {
    NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIKeyboardWillShow, object: nil)
    NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}

Answer 14

誰かがSwiftで解決策を探している場合に備えて、コードにこれをスローします。

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

    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(notification:)), name: .UIKeyboardWillShow, object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(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 keyboardWillShow(notification: Notification) {
    if let userInfo = notification.userInfo {
        if let keyboardSize = (userInfo[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
            UIView.animate(withDuration: 0.3) {
                var alteredFrame = self.view.frame
                alteredFrame.Origin.y = -keyboardSize.height
                self.view.frame = alteredFrame
            }
        }
    }
}

@objc func keyboardWillHide(notification: Notification) {
    UIView.animate(withDuration: 0.3) {
        var alteredFrame = self.view.frame
        alteredFrame.Origin.y = 0.0
        self.view.frame = alteredFrame
    }
}

Answer 15

textfieldがテーブルのセルにある場合（table.scrollable = NOであっても）、簡単かつ自動的に実行できます。

NOTEそれ：テーブルの位置とサイズは合理的でなければなりません。例えば：

• テーブルのy位置がビューの下部から数えて100である場合、300の高さのキーボードはテーブル全体に重なります。
• テーブルのheight = 10、およびキーボードが表示されるためにその中のtextfieldを100までスクロールする必要がある場合、そのテキストフィールドはテーブルの範囲外になります。

Answer 16

キーボードフレームに追従する軽量キーボードハンドラーを作成しました。

使用法：

 self.keyboardHandler = [EDKeyboardHandler new];

  [self.keyboardHandler listenWithBlock:^(KeyboardInfo *model)
  {
    //adjust view positions according to keyboard position here
  }];

また、KeyboardInfoモデルには次のプロパティがあります。

typedef enum : NSUInteger {
    KeyboardStatusDidShow,
    KeyboardStatusWillShow,
    KeyboardStatusDidHide,
    KeyboardStatusWillHide,
} KeyboardStatus;

@interface KeyboardInfo:NSObject

@property (nonatomic,readonly) NSTimeInterval animationDuration;
@property (nonatomic,readonly) CGRect keyboardFrame;
@property (nonatomic,readonly) NSInteger animationCurve;
@property (nonatomic,readonly) KeyboardStatus status;

@end

GitHub プロジェクトで詳細とcocoaPodsの統合を確認してください。

Answer 17

デリゲートを宣言し、テキストフィールドをデリゲートに割り当ててから、これらのメソッドを含めます。

電子メールとパスワードのテキストフィールドを含むログインフォームがあると仮定すると、このコードは完全に適合します。

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    [self.emailTextField resignFirstResponder];
    [self.passwordTextField resignFirstResponder];

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField {

    if (self.emailTextField == textField) {
        [self.passwordTextField becomeFirstResponder];
    } else {
        [self.emailTextField resignFirstResponder];
        [self.passwordTextField resignFirstResponder];
    }
    return NO;
}
- (void)viewWillAppear:(BOOL)animated {
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}

- (void)viewWillDisappear:(BOOL)animated {
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}

#pragma mark - keyboard movements
- (void)keyboardWillShow:(NSNotification *)notification
{
    CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

    [UIView animateWithDuration:0.3 animations:^{
        CGRect f = self.view.frame;
        f.Origin.y = -0.5f * keyboardSize.height;
        self.view.frame = f;
    }];
}

-(void)keyboardWillHide:(NSNotification *)notification
{
    [UIView animateWithDuration:0.3 animations:^{
        CGRect f = self.view.frame;
        f.Origin.y = 0.0f;
        self.view.frame = f;
    }];
}