如何在 Flutter 中长按底部导航栏项目后禁用弹出窗口/吐司？

Question

如果我长按底部导航栏项目的某个项目，那么它将显示一个弹出窗口/吐司及其项目的标题（上图中的收件箱弹出窗口）。我想禁用该行为，该怎么做？

这是我当前的底部导航栏

BottomNavigationBar(
        onTap: _selectPage,
        elevation: 2,
        backgroundColor: const Color.fromRGBO(245, 245, 245, 1),
        unselectedItemColor: Colors.grey,
        selectedItemColor: Theme.of(context).primaryColor,
        currentIndex: _selectedPageIndex,
        showSelectedLabels: false,
        showUnselectedLabels: false,
        type: BottomNavigationBarType.fixed,
        items: [
          BottomNavigationBarItem(
            icon: Icon(Icons.home_outlined),
            label: "Home",
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.search),
            label: "Search",
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.add_circle_outline),
            label: "create",
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.notifications_none),
            label: "Inbox",
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.person_outline),
            label: "Profile",
          ),
        ],
      ),
    

Answer 1

只需传递一个空字符串tooltip，它就会停止显示弹出窗口。这是您更新的代码：

BottomNavigationBar(
  onTap: _selectPage,
  elevation: 2,
  backgroundColor: const Color.fromRGBO(245, 245, 245, 1),
  unselectedItemColor: Colors.grey,
  selectedItemColor: Theme.of(context).primaryColor,
  currentIndex: _selectedPageIndex,
  showSelectedLabels: false,
  showUnselectedLabels: false,
  type: BottomNavigationBarType.fixed,
  items: [
    BottomNavigationBarItem(
      icon: Icon(Icons.home_outlined),
      label: "Home",
      tooltip: '',
    ),
    BottomNavigationBarItem(
      icon: Icon(Icons.search),
      label: "Search",
      tooltip: '',
    ),
    BottomNavigationBarItem(
      icon: Icon(Icons.add_circle_outline),
      label: "create",
      tooltip: '',
    ),
    BottomNavigationBarItem(
      icon: Icon(Icons.notifications_none),
      label: "Inbox",
      tooltip: '',
    ),
    BottomNavigationBarItem(
      icon: Icon(Icons.person_outline),
      label: "Profile",
      tooltip: '',
    ),
  ],
),

几个月前，这个问题在 github 上被提出，请参考https://github.com/flutter/flutter/issues/71049#:~:text=BottomNavigationBar%20has%20no%20API%20for,to%20completely%20disable %20its%20tooltips。