Syncfusion Flutter DataGrid移动端键盘事件监听及单元格跳转异常

我想在SfDataGrid编辑状态下跳转到同行的下一个单元格，参考官方单元格跳转示例后，自定义了EditorGridSelectionManager类，代码如下：

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:logging/logging.dart';
import 'package:syncfusion_flutter_datagrid/datagrid.dart';
import 'package:flutter/foundation.dart';

class EditorGridSelectionManager extends RowSelectionManager {
  final DataGridController dataGridController;
  Logger _logger=Logger('EditorGridSelectionManager');
  
  EditorGridSelectionManager({this.dataGridController});
  
  @override
  void handleKeyEvent(RawKeyEvent keyEvent) async {
    if (keyEvent.logicalKey == LogicalKeyboardKey.tab) {
      WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
        dataGridController.beginEdit(dataGridController.currentCell);
      });
    }
    if(keyEvent.logicalKey == LogicalKeyboardKey.f2){
      WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
        dataGridController.beginEdit(dataGridController.currentCell);
      });
    }
    if(defaultTargetPlatform==TargetPlatform.android || defaultTargetPlatform==TargetPlatform.iOS){
      _logger.info('Estoy en Mobile');
      if(keyEvent.logicalKey == LogicalKeyboardKey.arrowDown){
        _logger.info('Presione Next');
        WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
          dataGridController.beginEdit(dataGridController.currentCell);
        });
      }
    }
    super.handleKeyEvent(keyEvent);
  }
}

同时在TextField中设置textInputAction为TextInputAction.next以启用移动端虚拟键盘的Next按钮，代码片段如下：

return TextField(
    controller: controller,
    onChanged: this.onValueChanged,
    onSubmitted: this.onSubmitted,
    maxLength: length,
    keyboardType: this.textInputType,
    textCapitalization: TextCapitalization.sentences,
    textInputAction: TextInputAction.next,
    inputFormatters: _buildInputFormatter(),
    focusNode: this._focusNode,
    decoration: InputDecoration(
      border: InputBorder.none,
      contentPadding: EdgeInsets.only(top: 14.0),
      errorText: snapshot.error,
      errorStyle: TextStyle(color: Colors.red, fontWeight: FontWeight.bold),
      //hintText: textHint!=null ? textHint : 'Inform '+label
    ),
);

我已按照示例要求在SfDataGrid中设置RowSelectionManager，且从DataSource返回编辑组件。目前Web端按下Tab键可正常跳转至下一个单元格编辑，但移动端按下虚拟键盘的Next键毫无反应，且似乎从未进入EditorGridSelectionManager的handleKeyEvent方法。请问哪里操作有误？

核心问题原因 #

移动端虚拟键盘的Next按钮触发的是TextField的onSubmitted回调，而非RawKeyEvent，因此handleKeyEvent方法无法捕获该事件。Web端Tab键属于系统原生按键事件，能被handleKeyEvent处理，但移动端软键盘的操作逻辑完全不同。

具体修复步骤 #

1. 在TextField的onSubmitted中实现跳转逻辑
   直接在TextField的提交回调里处理单元格跳转，替换原有的无效逻辑：

   return TextField(
       // 保留原有配置
       textInputAction: TextInputAction.next,
       onSubmitted: (_) {
           final currentCell = dataGridController.currentCell;
           if (currentCell != null) {
               // 计算同行下一个单元格的列索引
               final nextColumnIndex = currentCell.columnIndex + 1;
               // 检查列索引是否在有效范围内
               if (nextColumnIndex < dataGridController.columns.length) {
                   final nextCell = DataGridCellPosition(
                       rowIndex: currentCell.rowIndex,
                       columnIndex: nextColumnIndex,
                   );
                   // 切换到下一个单元格并进入编辑状态
                   dataGridController.currentCell = nextCell;
                   dataGridController.beginEdit(nextCell);
               } else {
                   // 可选：若当前是最后一列，跳转至下一行第一个单元格
                   final nextRowIndex = currentCell.rowIndex + 1;
                   if (nextRowIndex < dataGridController.dataSource.rows.length) {
                       final nextCell = DataGridCellPosition(
                           rowIndex: nextRowIndex,
                           columnIndex: 0,
                       );
                       dataGridController.currentCell = nextCell;
                       dataGridController.beginEdit(nextCell);
                   }
               }
           }
       },
       // 保留原有配置
   );
   

2. 移除handleKeyEvent中无效的移动端代码
   原代码中监听移动端arrowDown的逻辑对Next按钮无作用，可直接删除：

   @override
   void handleKeyEvent(RawKeyEvent keyEvent) {
     if (keyEvent.logicalKey == LogicalKeyboardKey.tab) {
       WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
         dataGridController.beginEdit(dataGridController.currentCell);
       });
     }
     if(keyEvent.logicalKey == LogicalKeyboardKey.f2){
       WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
         dataGridController.beginEdit(dataGridController.currentCell);
       });
     }
     // 删除移动端arrowDown相关判断
     super.handleKeyEvent(keyEvent);
   }
   

3. 优化焦点管理（可选）
   若自定义编辑组件使用了focusNode，跳转时主动释放当前焦点，避免异常：

   onSubmitted: (_) {
       _focusNode.unfocus();
       // 后续跳转逻辑同上
   }
   

内容的提问来源于stack exchange，提问作者Daniel Ardison