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

@Override

public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {

boolean completed = super.dispatchPopulateAccessibilityEvent(event);

CharSequence text = getText();

if (!TextUtils.isEmpty(text)) {

event.getText().add(text);

return true;

}

return completed;

}

@Override

public boolean onKeyUp (int keyCode, KeyEvent event) {

if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {

currentValue--;

sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);

return true;

}

...

}

@Override

public boolean onKeyUp (int keyCode, KeyEvent event) {

if (keyCode == KeyEvent.KEYCODE_ENTER) {

currentValue--;

sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CONTEXT_CLICKED);

return true;

}

...

}