页面调用了多个setState,其中状态名有setState1,setStateBottomSheet1,现在出现混乱，关闭窗口出现以下报错[ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: setState() called after dispose(): _StatefulBuilderState#9a806(lifecycle state: defunct, not mounted) E/flutter ( 4255): This error happens if you call setState() on a State object for a widget that no longer appears in the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error can occur when code calls setState() from a timer or an animation callback. E/flutter ( 4255): The preferred solution is to cancel the timer or stop listening to the animation in the dispose() callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree. E/flutter ( 4255): This error might indicate a memory leak if setState() is being called because another object is retaining a reference to this State object after it has been removed from the tree. To avoid memory leaks, consider breaking the reference to this object during dispose().

这个报错通常是由于在组件被销毁后仍然调用了 `setState()` 方法导致的。报错信息建议在 `dispose()` 回调中取消定时器或停止监听动画，或者在调用 `setState()` 之前检查组件的 `mounted` 属性以确保组件仍然在树中。

为了解决这个问题，你可以按照以下步骤进行操作：

1. 在组件的 `dispose()` 方法中，确保取消所有定时器、动画或其他回调函数的监听。这可以通过调用相应的取消方法来完成，例如 `timer.cancel()`、`animationController.dispose()` 等。

2. 在调用 `setState()` 方法之前，检查组件的 `mounted` 属性。你可以使用 `mounted` 属性来判断组件是否仍然在树中。如果组件已经被销毁，可以避免调用 `setState()`。

下面是一个示例代码：

import 'package:flutter/material.dart';

class MyWidget extends StatefulWidget {
  @override
  _MyWidgetState createState() => _MyWidgetState();
}

class _MyWidgetState extends State<MyWidget> {
  Timer _timer;
  AnimationController _animationController;
  bool _isDisposed = false;

  @override
  void dispose() {
    _isDisposed = true;
    _timer.cancel();
    _animationController.dispose();
    super.dispose();
  }

  void _myMethod() {
    if (_isDisposed) {
      return;
    }
    if (mounted) {
      setState(() {
        // 在这里更新组件状态
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Container(
      // 组件的 UI 构建
    );
  }
}

通过在 `dispose()` 方法中取消定时器、动画等，并在调用 `setState()` 之前检查组件的 `mounted` 属性，你可以避免这个报错。确保及时清理资源是避免内存泄漏的重要步骤。