使用ValueListenableBuilder监听TextEditingController

Posted 2020-12-13 ashamp

                  ValueListenableBuilder<TextEditingValue>(
                                  valueListenable:volumeController,
                                  builder: (context, value, child) {
                                    final result = value.text.length == 0 ? ‘0‘ : value.text;
                                    return Text(result);
                                  },
                                )