输入框

textField.dart

TextField(
                        keyboardType: TextInputType.number,
                        inputFormatters: [FilteringTextInputFormatter.allow(RegExp(r'[0-9]'))],
                        decoration: InputDecoration(
                            hintText: "入れ替えの比例",
                            hintStyle: TextStyle(fontSize: 14, color: AppColors.color_cccccc),
                            fillColor: AppColors.color_f6f6f6,
                            filled: true,
                            border:
                                OutlineInputBorder(borderRadius: BorderRadius.circular(6), borderSide: BorderSide.none),
                            contentPadding: EdgeInsets.only(left: 12, bottom: 2)),
                      ),