SingleChildScrollView（
  child: Column(
                    children: [
                      ExpansionTile(
                        title: Text("Task Overview",
                            style:
                                TextStyle(fontWeight: FontWeight.bold)),
                        // key: PageStorageKey<Task>(Task),
                        maintainState: true,

                        children: <Widget>[
                          Task(),
                        ],
                      ),
                    ],
                  ),
                  ）
                  

下面的代码是Task部分

  TextField(
          controller: textcontroller,
     
          style: const TextStyle(color: Colors.black),
          cursorColor: Colors.black,
          onChanged: (value) {
            searchResult(value);
          },
          decoration: InputDecoration(
            hintText: "Search",
            hintStyle:
                const TextStyle(fontSize: 14, color: Colors.black),
           
            suffixIcon: const Icon(Icons.search, color: Colors.black),
            focusedBorder: OutlineInputBorder(
              borderRadius: BorderRadius.circular(10),
              borderSide: const BorderSide(
                color: Colors.black,
                width: 2.0,
              ),
            ),
            enabledBorder: OutlineInputBorder(
              borderRadius: BorderRadius.circular(10),
              borderSide: const BorderSide(
                style: BorderStyle.none,
              ),
            ),
            // filled: true,
          ),
        ),
        

即使我使用 "maintainState: true" , 它的children 还是会一直刷新， 各位大大们有什么方法可以解决吗？