In general, you should send an AccessibilityEvent whenever the content of your custom view changes.

override fun dispatchPopulateAccessibilityEvent(event: AccessibilityEvent): Boolean {

return super.dispatchPopulateAccessibilityEvent(event).let { completed -> if (text?.isNotEmpty() == true) {

event.text.add(text) true

} else {

completed

}

}

}

override fun onKeyUp(keyCode: Int, event: KeyEvent): Boolean { return when(keyCode) {

KeyEvent.KEYCODE_DPAD_LEFT -> {

currentValue--

sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED)

true

}

...

}

}

override fun onKeyUp(keyCode: Int, event: KeyEvent): Boolean { return when(keyCode) {

KeyEvent.KEYCODE_ENTER -> {

currentValue--

sendAccessibilityEvent

(AccessibilityEvent.TYPE_VIEW_CONTEXT_CLICKED)

true

}

...

}

}