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我正在使用 TextFormField 来接受密码。我已将后缀图标设置为让 IconButton 子项检测单击事件并切换 TextFormField 的模糊文本属性。iconButton 的回调函数被调用，但 TextFormField 不会被重新绘制。关于如何解决这个问题的任何想法？

static Widget buildTextFormField(String id, 
                               FormFieldValidator<String> validateField,
                               FormFieldSetter<String> saveField,
                               InputDecoration decoration,
                               EdgeInsetsGeometry paddingInfo,
                               EdgeInsetsGeometry marginInfo,
                               TextInputType keyboardType,
                               {bool obscureField:false, double width:328.0,
                                TextEditingController controller}
  ){
return Container(
  padding: paddingInfo,
  margin: marginInfo,
  width: width,
  child: TextFormField(
    key: Key(id),
    obscureText: obscureField,
    validator: validateField,
    onSaved: saveField,
    keyboardType: keyboardType,
    decoration: decoration,
    controller: controller,
  ),
);

}

InputDecoration passwordDecoration = InputDecoration(
   hintText: 'Password',
   labelText: 'Enter your password',
   suffixIcon:
      IconButton(
         icon: Icon(
            _passwordVisible ? Icons.visibility : Icons.visibility_off,
            semanticLabel: …