uiautomatorviewer - NAF代表什么？

Question

我的理解是UIAutomator无法在uiautomatorviewer中自动化任何NAF = true的元素.我搜索了高低,但我不能为我的生活找到NAF代表的东西.有人知道吗？

Answer 1

" 无法访问友好 "

这些UI元素显然是交互式的,但没有像内容描述那样的可访问性.

从AccessibilityNodeInfoDumper.java的源代码(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);
}

Answer 2

NAF代表"Not Accessibility Friendly".