我想让这个动画在所有元素的下面重叠显示但是报错了可以给我改后的代码吗 +7 ms Another exception was thrown RenderPointerListener does not meet its constraints +5 ms Another exception was thrown RenderRepaintBoundary does not meet its

Wrap组件可以实现重叠显示的效果，您可以将所有元素放在Wrap组件中，并将alignment属性设置为WrapAlignment.center，这样所有元素就会在中心重叠显示。修改后的代码如下：

SideMenu(
  background: Global.home_currentcolor,
  key: _sideMenuKey,
  menu: Wrap(
    alignment: WrapAlignment.center,
    children: [
      SingleChildScrollView(
        padding: const EdgeInsets.symmetric(vertical: 50.0),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Padding(
              padding: const EdgeInsets.only(left: 16.0),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  TextButton(
                    onPressed: () => Global().getrecently(context),
                    child: Text(
                      shijian(),
                      style: TextStyle(color: Colors.white),
                    ),
                  ),
                  SizedBox(height: 20.0),
                ],
              ),
            ),
            ListTile(
              leading: const Icon(Icons.cached,
                  size: 20.0, color: Colors.white),
              title: Text(
                '查看成绩',
                style: TextStyle(
                    color: Colors.white,
                    fontSize: 20,
                    fontWeight: FontWeight.bold),
              ),
              onTap: () => Navigator.of(context).push(
                MaterialPageRoute(
                  builder: (context) => scorepage(),
                ),
              ),
            ),
            ListTile(
                leading: const Icon(Icons.score_outlined,
                    size: 20.0, color: Colors.white),
                title: Text(
                  'chatgpt',
                  style: TextStyle(
                      color: Colors.white,
                      fontSize: 20,
                      fontWeight: FontWeight.bold),
                ),
                onTap: () {
                  Navigator.of(context).pop(); //关闭侧边栏

                  Navigator.push(
                      context,
                      MaterialPageRoute(
                          builder: (context) =>
                              chat_gpt()));
                }),
            ListTile(
              leading: const Icon(Icons.book_online,
                  size: 20.0, color: Colors.white),
              title: Text(
                '一键评教',
                style: TextStyle(
                    color: Colors.white,
                    fontSize: 20,
                    fontWeight: FontWeight.bold),
              ),
              onTap: () {
                Navigator.of(context).pop(); //关闭侧边栏
                Global()
                    .No_perception_login()
                    .then((value) => null);
                Navigator.push(
                    context,
                    MaterialPageRoute(
                        builder: (context) => pingjiao()));
              },
            ),
            ListTile(
              leading: const Icon(Icons.book_online,
                  size: 20.0, color: Colors.white),
              title: Text(
                '请假历史',
                style: TextStyle(
                    color: Colors.white,
                    fontSize: 20,
                    fontWeight: FontWeight.bold),
              ),
              onTap: () {
                Navigator.of(context).pop(); //关闭侧边栏
                Global()
                    .No_perception_login()
                    .then((value) => null);
                Navigator.push(
                    context,
                    MaterialPageRoute(
                        builder: (context) => qingjia()));
              },
            ),
            ListTile(
              leading: const Icon(Icons.colorize,
                  size: 20.0, color: Colors.white),
              title: Text(
                '调个色',
                style: TextStyle(
                    color: Colors.white,
                    fontSize: 20,
                    fontWeight: FontWeight.bold),
              ),
              onTap: () {
                showDialog(
                    context: context,
                    builder: (context) {
                      return MaterialApp(
                          theme: ThemeData.light(),
                          darkTheme: ThemeData.dark(),
                          home: AlertDialog(
                            title: Text('选择当前页颜色'),
                            content: SingleChildScrollView(
                              child: ColorPicker(
                                pickerColor: Global
                                    .home_currentcolor,
                                onColorChanged: changeColor,
                                colorPickerWidth: 300.0,
                                pickerAreaHeightPercent:
                                    0.7,
                                enableAlpha: false,
                                displayThumbColor: true,
                                showLabel: true,
                                paletteType:
                                    PaletteType.hsv,
                                pickerAreaBorderRadius:
                                    const BorderRadius.only(
                                  topLeft:
                                      const Radius.circular(
                                          2.0),
                                  topRight:
                                      const Radius.circular(
                                          2.0),
                                ),
                              ),
                            ),
                            actions: <Widget>[
                              TextButton(
                                child: const Text('确定'),
                                onPressed: () async {
                                  setState(() => Global
                                          .home_currentcolor =
                                      Global
                                          .home_pickcolor);
                                  getApplicationDocumentsDirectory()
                                      .then((value) {
                                    File file = File(
                                        value.path +
                                            '/color.txt');
                                    //判断文件是否存在
                                    if (file.existsSync()) {
                                      //存在则写入
                                      file.writeAsString(Global
                                          .home_currentcolor
                                          .value
                                          .toString());
                                    } else {
                                      //不存在则创建文件并写入
                                      file.createSync();
                                      file.writeAsString(Global
                                          .home_currentcolor
                                          .value
                                          .toString());
                                    }
                                  });
                                  Navigator.of(context)
                                      .pop();
                                },
                              ),
                            ],
                          ));
                    });
              },
            ),
            ListTile(
                leading: const Icon(Icons.score_outlined,
                    size: 20.0, color: Colors.white),
                title: Text(
                  '查看学习通已批完的考试但未发布的成绩',
                  style: TextStyle(
                      color: Colors.white,
                      fontSize: 20,
                      fontWeight: FontWeight.bold),
                ),
                onTap: () {
                  Navigator.of(context).pop(); //关闭侧边栏

                  Navigator.push(
                      context,
                      MaterialPageRoute(
                          builder: (context) =>
                              chaoxinglogin()));
                }),
            ListTile(
              leading: const Icon(Icons.cached,
                  size: 20.0, color: Colors.white),
              title: Text(
                '重新登入',
                style: TextStyle(
                    color: Colors.white,
                    fontSize: 20,
                    fontWeight: FontWeight.bold),
              ),
              onTap: () {
                deleteFile();
                AchievementView(context,
                    title: "成功!",
                    subTitle: "已清除课程和成绩缓存，请退出app重新登录",
                    //onTab: _onTabAchievement,
                    icon: Icon(
                      Icons.insert_emoticon,
                      color: Colors.white,
                    ),
                    //typeAnimationContent: AnimationTypeAchievement.fadeSlideToUp,
                    //borderRadius: 5.0,
                    color: Colors.green,
                    //textStyleTitle: TextStyle(),
                    //textStyleSubTitle: TextStyle(),
                    //alignment: Alignment.topCenter,
                    duration: Duration(seconds: 3),
                    isCircle: true, listener: (status) {
                  print(status);
                })
                  ..show();
              },
            ),
            ListTile(
              leading: const Icon(Icons.settings,
                  size: 20.0, color: Colors.white),
              title: Text(
                '关于&设置',
                style: TextStyle(
                    color: Colors.white,
                    fontSize: 20,
                    fontWeight: FontWeight.bold),
              ),
              onTap: () {
                Navigator.push(
                  context,
                  MaterialPageRoute(
                      builder: (context) => about()),
                );
              },
            ),
          ],
        ),
      ),
      Positioned(
        top: 0,
        child: Container(
          //缩小0.5倍
          child: RiveAnimation.asset(
            'assets/cat.riv',
            animations: ['Sulamine'],
            controllers: [_controller3],
          ),
        ),
      ),
    ],
  ),
),
``