页面跳转代码写在setState方法里面无效
bottomNavigationBar: BottomNavigationBar( type: BottomNavigationBarType.fixed, currentIndex: _currentIndex, onTap: (index) { setState(() { _contentPagerController.jumpToPage(index); _currentIndex = index; }); },
为什么 _contentPagerController.jumpToPage(index); 必须要写在setState方法外面, 写在里就变得无效了呢