키보드 열리고 아무데나 누르면 키보드 닫히게 하는법

appBar: AppBar(
        leading: const CloseButton(),
      ),
      body: GestureDetector(
        onTap: () {
          FocusScope.of(context).unfocus();
        },
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              '어떤 약이예요?',
              style: Theme.of(context).textTheme.headline4,
            ),
            Center(
              child: CircleAvatar(
                radius: 40,
                child: CupertinoButton(
                  onPressed: () {},
                  child: const Icon(
                    CupertinoIcons.photo_camera_solid,
                    size: 30,
                    color: Colors.white,
                  ),
                ),
              ),
            ),
            Text(
              '약 이름',
              style: Theme.of(context).textTheme.subtitle1,
            ),
            TextFormField(),
          ],
        ),
      ),
      bottomNavigationBar: SafeArea(
        child: ElevatedButton(
          onPressed: () {},
          style: ElevatedButton.styleFrom(
            textStyle: Theme.of(context).textTheme.subtitle1,
          ),
          child: Text('다음'),
        ),
      ),

FocusScope.of(context).unfocus();
이걸 제스쳐디텍터에 작성
FocusManager.instance.primaryFocus?.unfocus();