Accessibility (TalkBack) : How to make a particular view focussed automatically, just after the complete fragment loads?

Question

• When I click on a certain option, while the talkback feature is on, the selection of the view remains the same in the next fragment also.
• Either the selection or focus the view in the first fragment should be removed or the another view in the next fragment should be focussed.

• Currently I am using the following code :

   await Task.Delay(TimeSpan.FromSeconds(1)); view.SendAccessibilityEvent(Android.Views.Accessibility.EventTypes.ViewFocused); 

• But is this a good practice because I am adding delay in the system.

Answer 1

您可以像下面的onActivityCreated方法中的视图一样执行可访问性操作

view.performAccessibilityAction(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS, null);

Answer 2

You can use this if your fragment/activity have indivual view:

<view_id>.requestFocus()
<view_id>.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED)

if you have RecyclerView and you want to focus at the topmost item :

 <recyclerView_id>.post {
            val child = this.getChildAt(0)
            child?.let {
                it.requestFocus()
                it.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED)
            }
        }