希望你一切都好!
这是我第一次尝试使用 flutter_math_fork 0.7.2 包来显示 Tex 方程,但由于以下错误,它甚至无法编译(
"hashValues" is not found or defined
):
flutter run
Launching lib/main.dart on sdk gphone x86 in debug mode...
../../.pub-cache/hosted/pub.dev/flutter_math_fork-0.7.2/lib/src/widgets/selectable.dart:603:23: Error: The method 'hashValues' isn't defined for the class 'SelectionStyle'.
- 'SelectionStyle' is from 'package:flutter_math_fork/src/widgets/selectable.dart' ('../../.pub-cache/hosted/pub.dev/flutter_math_fork-0.7.2/lib/src/widgets/selectable.dart').
Try correcting the name to the name of an existing method, or defining a method named 'hashValues'.
int get hashCode => hashValues(
^^^^^^^^^^
../../.pub-cache/hosted/pub.dev/flutter_math_fork-0.7.2/lib/src/ast/options.dart:400:7: Error: The method 'hashValues' isn't defined for the class 'FontOptions'.
- 'FontOptions' is from 'package:flutter_math_fork/src/ast/options.dart' ('../../.pub-cache/hosted/pub.dev/flutter_math_fork-0.7.2/lib/src/ast/options.dart').
Try correcting the name to the name of an existing method, or defining a method named 'hashValues'.
hashValues(fontFamily.hashCode, fontWeight.hashCode, fontShape.hashCode);
^^^^^^^^^^
../../.pub-cache/hosted/pub.dev/flutter_math_fork-0.7.2/lib/src/ast/options.dart:434:7: Error: The method 'hashValues' isn't defined for the class 'PartialFontOptions'.
- 'PartialFontOptions' is from 'package:flutter_math_fork/src/ast/options.dart' ('../../.pub-cache/hosted/pub.dev/flutter_math_fork-0.7.2/lib/src/ast/options.dart').
Try correcting the name to the name of an existing method, or defining a method named 'hashValues'.
hashValues(fontFamily.hashCode, fontWeight.hashCode, fontShape.hashCode);
^^^^^^^^^^
Target kernel_snapshot_program failed: Exception
FAILURE: Build failed with an exception.
我的代码:
import 'package:flutter_math_fork/flutter_math.dart';
...
child: choicesContainsTexEquation ? Text(text) : Math.tex(text),
上面的变量
text
是从json文件中读取的。对于下面的两个文本(解码为字符串),会发生上面相同的错误(都尝试在 android 模拟器或 chrome 上运行):
"text":"test"
和 "text": "e^{i\\pi}+1=0"
开
pubspec.yaml
:
dependencies:
flutter:
sdk: flutter
flutter_math_fork: ^0.7.2
可能是什么问题?
非常感谢!
我尝试更改文本(使用 Tex 方程或“纯”文本)和平台(android 模拟器和 chrome),但出现了相同的错误。
这里的问题在于包本身。我猜这个包最近维护得不好,所以可能会发生这样的事情。
我认为,如果你真的依赖这个包,你唯一能做的就是使用一个叉子来解决这个特定的问题。或者也许可以通过修复创建您自己的分叉。
我在 GitHub 上搜索了一下,发现 fork 解决了你的问题,在这里:https://github.com/Telosnex/flutter_math_fork_fork.git 特别是,这里是带有修复的commit。
你可以尝试在你的项目中使用它,只需修改tour
podspec.yaml
,如下所示:
flutter_math_fork:
git: https://github.com/Telosnex/flutter_math_fork_fork.git
但是,在我看来,更多地创建自己的分支并进行修复是更稳健的方式。