小贝子编程

未运行一年的代码出现重大错误



你好，我最近开始做一个搁置了很长时间的项目，+- 1年。我打开它，一些小部件，如flatbutton是不赞成的，我不得不纠正他们为textbutton等。但毕竟,我试着运行代码,但我越来越调试colsole中的错误,有的与零安全所以我关掉它,但即使这样我仍然得到一堆错误,我不能找到解决办法,他们太多,需要天经历所有这些单独并修复它们,有谁知道我可以做些什么来解决这个问题吗?这个项目在被搁置的时候运行得很好，没有做任何改变，但现在它已经不起作用了。下面是调试控制台给出的结果。如能提供任何解决方案，我将不胜感激。

Launching libmain.dart on Android SDK built for x86 in debug mode...
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/dropdownfield-1.0.3/lib/dropdownfield.dart:119:25: Error: No named parameter with the name 'autovalidate'.
autovalidate: true,
^^^^^^^^^^^^
/C:/flutter/packages/flutter/lib/src/material/text_form_field.dart:97:3: Context: Found this candidate, but the arguments don't match.
TextFormField({
^^^^^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/dropdownfield-1.0.3/lib/dropdownfield.dart:88:11: Error: No named parameter with the name 'autovalidate'.
autovalidate: false,
^^^^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.0.4+3/lib/src/path_provider_windows_real.dart:126:25: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
knownFolderID.addressOf, KF_FLAG_DEFAULT, NULL, pathPtrPtr);
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:1067:7: Error: The getter 'addressOf' isn't defined for the class 'LOGFONT'.
- 'LOGFONT' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
addressOf.cast<Uint8>().elementAt(28).cast<Utf16>();
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:1112:29: Error: The getter 'addressOf' isn't defined for the class 'ENUMLOGFONTEX'.
- 'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
LOGFONT get elfLogFont => addressOf.cast<LOGFONT>().ref;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:1114:29: Error: The getter 'addressOf' isn't defined for the class 'ENUMLOGFONTEX'.
- 'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
String get elfFullName => addressOf
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:1120:26: Error: The getter 'addressOf' isn't defined for the class 'ENUMLOGFONTEX'.
- 'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
String get elfStyle => addressOf
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:1126:27: Error: The getter 'addressOf' isn't defined for the class 'ENUMLOGFONTEX'.
- 'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
String get elfScript => addressOf
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:2688:7: Error: The getter 'addressOf' isn't defined for the class 'OSVERSIONINFO'.
- 'OSVERSIONINFO' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
addressOf.cast<Uint8>().elementAt(20).cast<Utf16>().unpackString(128);
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:2699:11: Error: The getter 'addressOf' isn't defined for the class 'OSVERSIONINFO'.
- 'OSVERSIONINFO' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
..addressOf.cast<Uint8>().elementAt(20).value = 0;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:2744:24: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_DEVICE_INFO'.
- 'BLUETOOTH_DEVICE_INFO' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
String get szName => addressOf
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:2837:7: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_PIN_INFO'.
- 'BLUETOOTH_PIN_INFO' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
addressOf.cast<Uint8>().elementAt(BTH_MAX_PIN_SIZE).value;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:2840:5: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_PIN_INFO'.
- 'BLUETOOTH_PIN_INFO' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
addressOf.cast<Uint8>().elementAt(BTH_MAX_PIN_SIZE).value =
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:2845:28: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_PIN_INFO'.
- 'BLUETOOTH_PIN_INFO' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
String.fromCharCodes(addressOf.cast<Uint8>().asTypedList(pinLength));
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart:2853:7: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_PIN_INFO'.
- 'BLUETOOTH_PIN_INFO' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
addressOf.cast<Uint8>().elementAt(idx).value = pinData[idx];
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/com/combase.dart:38:31: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final iid = GUID.allocate().addressOf;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/com/combase.dart:56:33: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final clsid = GUID.allocate().addressOf;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/ffi-0.1.3/lib/src/utf8.dart:63:33: Error: The getter 'addressOf' isn't defined for the class 'Utf8'.
- 'Utf8' is from 'package:ffi/src/utf8.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/ffi-0.1.3/lib/src/utf8.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
String toString() => fromUtf8(addressOf);
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IWbemLocator.dart:82:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
- 'COMObject' is from 'package:win32/src/com/combase.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/com/combase.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final ptr = COMObject.allocate().addressOf;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IWbemLocator.dart:84:68: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final hr = CoCreateInstance(GUID.fromString(CLSID_WbemLocator).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IWbemLocator.dart:85:64: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
nullptr, CLSCTX_ALL, GUID.fromString(IID_IWbemLocator).addressOf, ptr);
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/INetworkListManager.dart:128:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
- 'COMObject' is from 'package:win32/src/com/combase.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/com/combase.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final ptr = COMObject.allocate().addressOf;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/INetworkListManager.dart:131:51: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(CLSID_NetworkListManager).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/INetworkListManager.dart:134:50: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(IID_INetworkListManager).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IKnownFolderManager.dart:164:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
- 'COMObject' is from 'package:win32/src/com/combase.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/com/combase.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final ptr = COMObject.allocate().addressOf;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IKnownFolderManager.dart:167:51: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(CLSID_KnownFolderManager).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IKnownFolderManager.dart:170:50: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(IID_IKnownFolderManager).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IFileSaveDialog.dart:99:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
- 'COMObject' is from 'package:win32/src/com/combase.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/com/combase.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final ptr = COMObject.allocate().addressOf;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IFileSaveDialog.dart:102:47: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(CLSID_FileSaveDialog).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IFileSaveDialog.dart:105:46: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(IID_IFileSaveDialog).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IFileOpenDialog.dart:58:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
- 'COMObject' is from 'package:win32/src/com/combase.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/com/combase.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final ptr = COMObject.allocate().addressOf;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IFileOpenDialog.dart:61:47: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(CLSID_FileOpenDialog).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IFileOpenDialog.dart:64:46: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(IID_IFileOpenDialog).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IDesktopWallpaper.dart:197:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
- 'COMObject' is from 'package:win32/src/com/combase.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/com/combase.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final ptr = COMObject.allocate().addressOf;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IDesktopWallpaper.dart:200:49: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(CLSID_DesktopWallpaper).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/generated/IDesktopWallpaper.dart:203:48: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
GUID.fromString(IID_IDesktopWallpaper).addressOf,
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/winrt/winrt_helpers.dart:86:40: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
- 'GUID' is from 'package:win32/src/structs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4/lib/src/structs.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
final riidCalendar = GUID.allocate().addressOf;
^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/platform-2.2.1/lib/src/interface/local_platform.dart:45:41: Error: Member not found: 'packageRoot'.
String get packageRoot => io.Platform.packageRoot;
^^^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/picker_page.dart:187:63: Error: The getter 'title' isn't defined for the class 'TextTheme'.
- 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/C:/flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'title'.
color: AppBarTheme.of(context).textTheme?.title?.color ??
^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/picker_page.dart:188:61: Error: The getter 'title' isn't defined for the class 'TextTheme'.
- 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/C:/flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'title'.
Theme.of(context).primaryTextTheme?.title?.color),
^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/picker_page.dart:234:26: Error: The getter 'FlatButton' isn't defined for the class '_FilesystemPickerState'.
- '_FilesystemPickerState' is from 'package:filesystem_picker/src/picker_page.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/picker_page.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'FlatButton'.
child: FlatButton.icon(
^^^^^^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/picker_page.dart:236:60: Error: The getter 'title' isn't defined for the class 'TextTheme'.
- 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/C:/flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'title'.
AppBarTheme.of(context).textTheme?.title?.color ??
^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/picker_page.dart:237:65: Error: The getter 'title' isn't defined for the class 'TextTheme'.
- 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/C:/flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'title'.
Theme.of(context).primaryTextTheme?.title?.color,
^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/picker_page.dart:240:35: Error: The getter 'title' isn't defined for the class 'TextTheme'.
- 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/C:/flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'title'.
?.title
^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/picker_page.dart:242:65: Error: The getter 'title' isn't defined for the class 'TextTheme'.
- 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/C:/flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'title'.
Theme.of(context).primaryTextTheme?.title?.color)
^^^^^
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/breadcrumbs.dart:65:22: Error: The method 'FlatButton' isn't defined for the class 'Breadcrumbs<T>'.
- 'Breadcrumbs' is from 'package:filesystem_picker/src/breadcrumbs.dart' ('/C:/flutter/.pub-cache/hosted/pub.dartlang.org/filesystem_picker-1.0.3/lib/src/breadcrumbs.dart').
Try correcting the name to the name of an existing method, or defining a method named 'FlatButton'.
child: FlatButton(
^^^^^^^^^^
FAILURE: Build failed with an exception.
* Where:
Script 'C:flutterpackagesflutter_toolsgradleflutter.gradle' line: 1159
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:flutterbinflutter.bat'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 29s
Exception: Gradle task assembleDebug failed with exit code 1
Exited (sigterm)

您的flutter项目已经创建了一段时间，并且自那以后flutter发生了很大的变化。

你有各种各样的问题:

  • 首先，你的代码不是空安全的。您可以在Dart文档中了解null安全:https://dart.dev/null-safety
  • 你在代码中使用的一些小部件已经不存在了，FlatButton已经被新的小部件TextButton所取代，你可以在这里了解更多的变化:https://docs.flutter.dev/release/breaking-changes/buttons
  • 你似乎使用TextTheme.title应用你的主题到一些小部件，但.title属性已被删除，你现在可以使用headline1属性代替
  • 你有一些依赖关系的问题，一些依赖关系可以有新的参数或已经删除了一些参数随着时间的推移。根据他们的文档
    • 更新你的代码

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