android-uiautomator - uiautomatorviewer - NAF 代表什么？

Question

我的理解是 UIAutomator 无法自动化 uiautomatorviewer 中 NAF = true 的任何元素。我已经搜索了高低，但我一生都无法找到 NAF 代表什么。有人知道吗？

Answer 1

" 无障碍友好 "

这些 UI 元素显然是交互式的，但没有像内容描述这样的可访问性可供性。

来自 AccessibilityNodeInfoDumper.java 的来源(uiautomator 的一部分):

/**
 * We're looking for UI controls that are enabled, clickable but have no
 * text nor content-description. Such controls configuration indicate an
 * interactive control is present in the UI and is most likely not
 * accessibility friendly. We refer to such controls here as NAF controls
 * (Not Accessibility Friendly)
 *
 * @param node
 * @return false if a node fails the check, true if all is OK
 */
private static boolean nafCheck(AccessibilityNodeInfo node) {
    boolean isNaf = node.isClickable() && node.isEnabled()
            && safeCharSeqToString(node.getContentDescription()).isEmpty()
            && safeCharSeqToString(node.getText()).isEmpty();
    if (!isNaf)
        return true;
    // check children since sometimes the containing element is clickable
    // and NAF but a child's text or description is available. Will assume
    // such layout as fine.
    return childNafCheck(node);
}