代码没报错，但是flutter run 报错

[diaowenyang]

../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text_field-4.0.0/lib/src/extended_editable_text.dart:1017:7: Error: The non-abstract class 'ExtendedEditableTextState' is missing implementations for these members:

• TextInputClient.performPrivateCommand
  Try to either
• provide an implementation,
• inherit an implementation from a superclass or mixin,
• mark the class as abstract, or
• provide a 'noSuchMethod' implementation.

class ExtendedEditableTextState extends State
^^^^^^^^^^^^^^^^^^^^^^^^^
../../Downloads/flutter/packages/flutter/lib/src/services/text_input.dart:813:8: Context: 'TextInputClient.performPrivateCommand' is defined here. void performPrivateCommand(String action, Map<String, dynamic> data); ^^^^^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text-4.0.0/lib/src/extended_render_paragraph.dart:21:7: Error: The non-abstract class 'ExtendedRenderParagraph' is missing implementations for these members:

• ExtendedTextSelectionRenderObject.caretPrototype
• ExtendedTextSelectionRenderObject.textSelectionDelegate
  Try to either
• provide an implementation,
• inherit an implementation from a superclass or mixin,
• mark the class as abstract, or
• provide a 'noSuchMethod' implementation.

class ExtendedRenderParagraph extends ExtendedTextSelectionRenderObject { ^^^^^^^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text_library-4.0.3/lib/src/render_object/extended_text_selection_render_object.dart:376:12: Context: 'ExtendedTextSelectionRenderObject.caretPrototype' is defined here. Rect get caretPrototype;
^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text_library-4.0.3/lib/src/render_object/extended_text_selection_render_object.dart:383:29: Context: 'ExtendedTextSelectionRenderObject.textSelectionDelegate' is defined here. TextSelectionDelegate get textSelectionDelegate;
^^^^^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text_field-4.0.0/lib/src/extended_render_editable.dart:99:7: Error: The non-abstract class 'ExtendedRenderEditable' is missing implementations for these members:

• ExtendedTextSelectionRenderObject.caretPrototype
  Try to either
• provide an implementation,
• inherit an implementation from a superclass or mixin,
• mark the class as abstract, or
• provide a 'noSuchMethod' implementation.

class ExtendedRenderEditable extends ExtendedTextSelectionRenderObject { ^^^^^^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text_library-4.0.3/lib/src/render_object/extended_text_selection_render_object.dart:376:12: Context: 'ExtendedTextSelectionRenderObject.caretPrototype' is defined here. Rect get caretPrototype;
^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text-4.0.0/lib/src/extended_render_paragraph.dart:1026:9: Error: No named parameter with the name 'handleSpecialText'. handleSpecialText: handleSpecialText,
^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text-4.0.0/lib/src/extended_render_paragraph.dart:1241:7: Error: No named parameter with the name 'handleSpecialText'. handleSpecialText: handleSpecialText,
^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text-4.0.0/lib/src/extended_render_paragraph.dart:1258:7: Error: No named parameter with the name 'handleSpecialText'. handleSpecialText: handleSpecialText,
^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text_field-4.0.0/lib/src/extended_render_editable.dart:377:7: Error: No named parameter with the name 'handleSpecialText'. handleSpecialText: handleSpecialText,
^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text_field-4.0.0/lib/src/extended_render_editable.dart:396:7: Error: No named parameter with the name 'handleSpecialText'. handleSpecialText: handleSpecialText,
^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text_field-4.0.0/lib/src/extended_render_editable.dart:1619:9: Error: No named parameter with the name 'handleSpecialText'. handleSpecialText: handleSpecialText,
^^^^^^^^^^^^^^^^^
../../Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/extended_text_field-4.0.0/lib/src/extended_render_editable.dart:1925:7: Error: No named parameter with the name 'handleSpecialText'. handleSpecialText: handleSpecialText,
^^^^^^^^^^^^^^^^^

FAILURE: Build failed with an exception.

[huiqiangyang]

这样改

[diaowenyang]

果然可以，谢谢。