全盲の嫁の為に、お手本を見ながらカスタムキーボードを作成中です。  
実機テストで分かったことですが、 Voice Overによるボタンの読み上げをしてくれません。  
コードの追加が必要なのでしょうか？

```

    #import "KeyboardViewController.h"
    #import "Keyboard.h"
    @interface KeyboardViewController ()
    @property (strong,nonatomic) Keyboard *keyboard;
    @end
    
    @implementation KeyboardViewController
    
    - (void)updateViewConstraints {
        [super updateViewConstraints];
    
        // Add custom view sizing constraints here
    }
    
    - (void)viewDidLoad {
        [super viewDidLoad];
    
        // Perform custom UI setup here
        self.keyboard = [[[NSBundle mainBundle] loadNibNamed:@"Keyboard" owner:nil options:nil]objectAtIndex:0];
        [self addGesturesToKeyboard];
        self.inputView = self.keyboard;
    
    }
    
    
    - (void)viewWillLayoutSubviews
    {
        [super viewWillLayoutSubviews];
    }
    
    - (void)textWillChange:(id<UITextInput>)textInput {
        // The app is about to change the document's contents. Perform any preparation here.
    }
    
    - (void)textDidChange:(id<UITextInput>)textInput {
        // The app has just changed the document's contents, the document context has been updated.
    
        UIColor *textColor = nil;
        if (self.textDocumentProxy.keyboardAppearance == UIKeyboardAppearanceDark) {
            textColor = [UIColor whiteColor];
        } else {
            textColor = [UIColor blackColor];
        }
    }
    
    #pragma mark Keyboards
    - (void)addGesturesToKeyboard{
        [self.keyboard.deleteKey addTarget:self action:@selector(pressDeleteKey) forControlEvents:UIControlEventTouchUpInside];
            [self.keyboard.spaceKey addTarget:self action:@selector(pressSpaceKey) forControlEvents:UIControlEventTouchUpInside];
                [self.keyboard.returnKey addTarget:self action:@selector(pressReturnKey) forControlEvents:UIControlEventTouchUpInside];
       //Change to next keyboard
        [self.keyboard.globeKey addTarget:self action:@selector(advanceToNextInputMode) forControlEvents:UIControlEventTouchUpInside];
    
    for (UIButton *Key in self.keyboard.keysArray) {
        [Key addTarget:self action:@selector(pressKey:) forControlEvents:UIControlEventTouchUpInside];}
         }
    - (void)pressDeleteKey{
            [self.textDocumentProxy deleteBackward];
        }
    -(void)pressSpaceKey{
        [self.textDocumentProxy insertText:@" "];
    }
    -(void)pressReturnKey{
            [self.textDocumentProxy insertText:@"\n"];}
         -(void)pressKey:(UIButton *)key{
        [self.textDocumentProxy insertText:[key currentTitle]];
    
         }
    
    @end
    
```
CC BY-SA 4.0
2020-05-19T05:53:08.167
66765
2020-05-20T14:19:28.717
2020-05-20T14:19:28.717
40220
40220
question
ios xcode objective-c swift5
カスタムキーボードの Voice Over