AccessibilityNodeProviderCompat

public static final int HOST_VIEW_ID = -1

The virtual id for the hosting View.

public AccessibilityNodeProviderCompat()

Creates a new instance.

public AccessibilityNodeProviderCompat(@Nullable Object provider)

Creates a new instance wrapping an android.view.accessibility.AccessibilityNodeProvider.

public void addExtraDataToAccessibilityNodeInfo(
    int virtualViewId,
    @NonNull AccessibilityNodeInfoCompat info,
    @NonNull String extraDataKey,
    @Nullable Bundle arguments
)

Adds extra data to an AccessibilityNodeInfoCompat based on an explicit request for the additional data.

This method only needs to be implemented if a virtual view offers to provide additional data.

public @Nullable AccessibilityNodeInfoCompat createAccessibilityNodeInfo(int virtualViewId)

Returns an AccessibilityNodeInfoCompat representing a virtual view, i.e. a descendant of the host View, with the given virtualViewId or the host View itself if virtualViewId equals to HOST_VIEW_ID.

A virtual descendant is an imaginary View that is reported as a part of the view hierarchy for accessibility purposes. This enables custom views that draw complex content to report them selves as a tree of virtual views, thus conveying their logical structure.

The implementer is responsible for obtaining an accessibility node info from the pool of reusable instances and setting the desired properties of the node info before returning it.

public @Nullable List<AccessibilityNodeInfoCompat> findAccessibilityNodeInfosByText(@NonNull String text, int virtualViewId)

Finds AccessibilityNodeInfoCompats by text. The match is case insensitive containment. The search is relative to the virtual view, i.e. a descendant of the host View, with the given virtualViewId or the host View itself virtualViewId equals to HOST_VIEW_ID.

public @Nullable AccessibilityNodeInfoCompat findFocus(int focus)

Find the virtual view, i.e. a descendant of the host View, that has the specified focus type.

public boolean performAction(int virtualViewId, int action, @Nullable Bundle arguments)

Performs an accessibility action on a virtual view, i.e. a descendant of the host View, with the given virtualViewId or the host View itself if virtualViewId equals to HOST_VIEW_ID.