当尝试将Center小部件包含在SingleChildScrollView中时，我遇到了意外的底部填充。但是，在将SingleChildScrollView传输到Form小部件并将其从Center小部件中删除后，该问题已成功解决，并且布局按预期运行。

这是一个例子

final class Example extends StatefulWidget {
  const Example({super.key});

  @override
  State<Example> createState() => _ExampleState();
}

class _ExampleState extends State<Example> {
  final TextEditingController _controller = TextEditingController();

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        decoration: const BoxDecoration(
          color: Colors.blueGrey,
        ),
        child: SingleChildScrollView(
          padding: EdgeInsets.zero,
          child: Form(
            child: SizedBox(
              height: context.mediaQuery.removeViewPadding().size.height,
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  Container(
                    height: context.mediaQuery.size.width * .5,
                    width: context.mediaQuery.size.width * .5,
                    decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(10),
                      border: Border.all(width: 2),
                    ),
                    child: ClipRRect(
                      borderRadius: BorderRadius.circular(10),
                      child: const FlutterLogo(),
                    ),
                  ),
                  const SizedBox(height: 20),

                  const Text(
                    'Scan Device QR Code!',
                  ),

                  const SizedBox(height: 10),
                  const Padding(
                    padding: EdgeInsets.symmetric(horizontal: 30),
                    child: Divider(),
                  ),
                  const SizedBox(height: 20),
                  Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 40),
                    child: TextFormField(
                      validator: (value) {
                        if (value == null || value.isEmpty) {
                          return 'Device Id is required';
                        }
                        return null;
                      },
                      controller: _controller,
                      decoration: const InputDecoration(hintText: 'Device Id', fillColor: Colors.white, filled: true),
                    ),
                  ),
                  const SizedBox(height: 20),

                  Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 40),
                    child: ElevatedButton(
                      onPressed: () {
                        //     Get.to(() => const PlugInCar());
                      },
                      child: const Text('Verify'),
                    ),
                  ),

                  // Padding(
                  //   padding:  EdgeInsets.symmetric(horizontal: 50.w),
                  //   child:  const Divider(
                  //       color: AppColors.grey, thickness: 1.5),
                  // ),

                  // Text('Scan Device QR Code', style: tsWhite18Bold,),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}

字符串
这是基地结构

Scaffold(
      body: Container(
        decoration: const BoxDecoration(
          color: Colors.blueGrey,
        ),
        child: SingleChildScrollView(
          padding: EdgeInsets.zero,
          child: Form(
            child: SizedBox(
              height: context.mediaQuery.removeViewPadding().size.height,
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  
                ///
                /// ...Widgets
                ///
                ],
              ),
            ),
          ),
        ),
      ),
    );

型