如何更改双击和长按的Android对讲说明

3 回答

• 7

  在API 21中，您可以通过在View的 AccessibilityNodeInfo 上设置自定义操作来自定义操作名称 . 有两种方法：1）设置 AccessibilityDelegate 并覆盖 onInitializeAccessibilityNodeInfo 委托方法或2）扩展视图的类并覆盖 onInitializeAccessibilityNodeInfo .

  无论哪种方式，您将构建一个新的AccessibilityAction并使用AccessibilityNodeInfo.addAction在节点上设置它 .

  如果您选择使用委托，则应为单击操作设置自定义说明，如下所示：

  view.setAccessibilityDelegate(new AccessibilityDelegate() {
    @Override
    public void onInitializeAccessibilityNodeInfo(
        View v, AccessibilityNodeInfo info) {
      super.onInitializeAccessibilityNodeInfo(v, info);
  
      // A custom action description. For example, you could use "pause"
      // to have TalkBack speak "double-tap to pause."
      CharSequence description = getResources().getText(R.string.my_click_desc);
      AccessibilityAction customClick = new AccessibilityAction(
              AccessibilityAction.ACTION_ACTION_CLICK, description);
      info.addAction(customClick);
    }
  });
  

  如果您的应用程序目标API <21，请替换相应的 *Compat 支持库方法 . 该功能未向后移植，因此您无法获得API <21的自定义说明，但您可以避免在应用程序代码中进行显式版本检查 .

  回复于 2024-04-26T19:37:42+08:00
• 1

  自 alanv 发布他的答案后，似乎 AccessibilityAction 略有变化 . 这是一个使用 ViewCompat 的工作解决方案：

  ViewCompat.setAccessibilityDelegate(view, new AccessibilityDelegateCompat() {
      @Override
      public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
          super.onInitializeAccessibilityNodeInfo(host, info);
          // A custom action description. For example, you could use "pause"
          // to have TalkBack speak "double-tap to pause."
          CharSequence description = host.getResources().getText(R.string.my_click_desc);
          AccessibilityActionCompat customClick = new AccessibilityActionCompat(
                      AccessibilityNodeInfoCompat.ACTION_CLICK, description);
          info.addAction(customClick);
      }
  });
  

  回复于 2024-04-26T19:37:42+08:00
• 5

  对于那些想要删除所有短语的人，请使用以下代码 . “双击” .

  ViewCompat.setAccessibilityDelegate(view, new AccessibilityDelegateCompat() {
          @Override
          public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
              super.onInitializeAccessibilityNodeInfo(host, info);
              info.addAction(AccessibilityNodeInfoCompat.ACTION_FOCUS);
          }
  });
  

  这基本上是调用以下代码而 requestFocus 没有与之关联的任何默认对讲通知 .

  case AccessibilityNodeInfo.ACTION_FOCUS: {
                  if (!hasFocus()) {
                      // Get out of touch mode since accessibility
                      // wants to move focus around.
                      getViewRootImpl().ensureTouchMode(false);
                      return requestFocus();
                  }
              }
  

  回复于 2024-04-26T19:37:42+08:00