Android - 如何清除可访问性焦点

Question

I would like to clear accessibility focus. But in my case it is not easy as object that currently has focus is not accessible in the scope, so I cannot call on it clearAccessibilityFocus(). In this moment I request focus on other object, that I have access to and then clear focus, but it is not good solution. Can you help me with that?

Answer 1

You can use

view.performAccessibilityAction(
            AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null);

to clear the accessibility focus.

Answer 2

我想你可以去：

myView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED);

Answer 3

You can call this on view.

setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);

I was having a problem where accessibility was leaked on the fragment which was added on top of other fragment. so onCreateView() of the second fragment

container.getFocusedChild().setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);

Answer 4

There are two possible situations. If you need to remove focus from real view then you can act like this:

view.performAccessibilityAction(
    AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, 
    null
)

But if you need to remove focus from virtual view then you should do something like this:

view.accessibilityNodeProvider?.performAction(
    virtualViewId,
    AccessibilityNodeInfoCompat.ACTION_CLEAR_ACCESSIBILITY_FOCUS,
    null
)