public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
    if (DrawerLayout.CAN_HIDE_DESCENDANTS) {
        super.onInitializeAccessibilityNodeInfo(host, info);
    } else {
        AccessibilityNodeInfoCompat superNode = AccessibilityNodeInfoCompat.obtain(info);
        super.onInitializeAccessibilityNodeInfo(host, superNode);
        info.setSource(host);
        ViewParent parent = ViewCompat.getParentForAccessibility(host);
        if (parent instanceof View) {
            info.setParent((View) parent);
        }
        copyNodeInfoNoChildren(info, superNode);
        superNode.recycle();
        addChildrenForAccessibility(info, (ViewGroup) host);
    }
    info.setClassName(DrawerLayout.class.getName());
    info.setFocusable(false);
    info.setFocused(false);
    info.removeAction(AccessibilityActionCompat.ACTION_FOCUS);
    info.removeAction(AccessibilityActionCompat.ACTION_CLEAR_FOCUS);
}
 

@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
    if (CAN_HIDE_DESCENDANTS) {
        super.onInitializeAccessibilityNodeInfo(host, info);
    } else {
        // Obtain a node for the host, then manually generate the list
        // of children to only include non-obscured views.
        final AccessibilityNodeInfoCompat superNode =
                AccessibilityNodeInfoCompat.obtain(info);
        super.onInitializeAccessibilityNodeInfo(host, superNode);

        info.setSource(host);
        final ViewParent parent = ViewCompat.getParentForAccessibility(host);
        if (parent instanceof View) {
            info.setParent((View) parent);
        }
        copyNodeInfoNoChildren(info, superNode);
        superNode.recycle();

        addChildrenForAccessibility(info, (ViewGroup) host);
    }

    info.setClassName(DrawerLayout.class.getName());

    // This view reports itself as focusable so that it can intercept
    // the back button, but we should prevent this view from reporting
    // itself as focusable to accessibility services.
    info.setFocusable(false);
    info.setFocused(false);
    info.removeAction(AccessibilityActionCompat.ACTION_FOCUS);
    info.removeAction(AccessibilityActionCompat.ACTION_CLEAR_FOCUS);
}
 

@Override
protected void onPopulateNodeForVirtualView(int virtualViewId, AccessibilityNodeInfoCompat node) {
    final boolean hasBounds = getBoundsForDay(virtualViewId, mTempRect);

    if (!hasBounds) {
        // The day is invalid, kill the node.
        mTempRect.setEmpty();
        node.setContentDescription("");
        node.setBoundsInParent(mTempRect);
        node.setVisibleToUser(false);
        return;
    }

    node.setText(getDayText(virtualViewId));
    node.setContentDescription(getDayDescription(virtualViewId));
    node.setBoundsInParent(mTempRect);

    final boolean isDayEnabled = isDayEnabled(virtualViewId);
    if (isDayEnabled) {
        node.addAction(AccessibilityActionCompat.ACTION_CLICK);
    }

    node.setEnabled(isDayEnabled);

    if (virtualViewId == mActivatedDay) {
        // TODO: This should use activated once that's supported.
        node.setChecked(true);
    }

}
 

@Nullable
public static String getActions(View view) {
  AccessibilityNodeInfoCompat node = createNodeInfoFromView(view);
  try {
    final StringBuilder actionLabels = new StringBuilder();
    final String separator = ", ";

    for (AccessibilityActionCompat action : node.getActionList()) {
      if (actionLabels.length() > 0) {
        actionLabels.append(separator);
      }
      switch (action.getId()) {
        case AccessibilityNodeInfoCompat.ACTION_FOCUS:
          actionLabels.append("focus");
          break;
        case AccessibilityNodeInfoCompat.ACTION_CLEAR_FOCUS:
          actionLabels.append("clear-focus");
          break;
        case AccessibilityNodeInfoCompat.ACTION_SELECT:
          actionLabels.append("select");
          break;
        case AccessibilityNodeInfoCompat.ACTION_CLEAR_SELECTION:
          actionLabels.append("clear-selection");
          break;
        case AccessibilityNodeInfoCompat.ACTION_CLICK:
          actionLabels.append("click");
          break;
        case AccessibilityNodeInfoCompat.ACTION_LONG_CLICK:
          actionLabels.append("long-click");
          break;
        case AccessibilityNodeInfoCompat.ACTION_ACCESSIBILITY_FOCUS:
          actionLabels.append("accessibility-focus");
          break;
        case AccessibilityNodeInfoCompat.ACTION_CLEAR_ACCESSIBILITY_FOCUS:
          actionLabels.append("clear-accessibility-focus");
          break;
        case AccessibilityNodeInfoCompat.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
          actionLabels.append("next-at-movement-granularity");
          break;
        case AccessibilityNodeInfoCompat.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY:
          actionLabels.append("previous-at-movement-granularity");
          break;
        case AccessibilityNodeInfoCompat.ACTION_NEXT_HTML_ELEMENT:
          actionLabels.append("next-html-element");
          break;
        case AccessibilityNodeInfoCompat.ACTION_PREVIOUS_HTML_ELEMENT:
          actionLabels.append("previous-html-element");
          break;
        case AccessibilityNodeInfoCompat.ACTION_SCROLL_FORWARD:
          actionLabels.append("scroll-forward");
          break;
        case AccessibilityNodeInfoCompat.ACTION_SCROLL_BACKWARD:
          actionLabels.append("scroll-backward");
          break;
        case AccessibilityNodeInfoCompat.ACTION_CUT:
          actionLabels.append("cut");
          break;
        case AccessibilityNodeInfoCompat.ACTION_COPY:
          actionLabels.append("copy");
          break;
        case AccessibilityNodeInfoCompat.ACTION_PASTE:
          actionLabels.append("paste");
          break;
        case AccessibilityNodeInfoCompat.ACTION_SET_SELECTION:
          actionLabels.append("set-selection");
          break;
        default:
          CharSequence label = action.getLabel();
          if (label != null) {
            actionLabels.append(label);
          } else {
            actionLabels.append("unknown");
          }
          break;
      }
    }

    return actionLabels.length() > 0 ? actionLabels.toString() : null;
  } finally {
    node.recycle();
  }
}
 

public ClickActionDelegate(Context context, int resId) {
    mClickAction = new AccessibilityActionCompat(
            AccessibilityNodeInfoCompat.ACTION_CLICK, context.getString(resId));
}