Issue in version 4.0.10 #201
Comments
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Please do |
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I am getting the same issue on 4.0.12. Doing a |
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Please share a minimal example that I can try. |
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the quiz example didn't work in my case. i copy pasted it with no changes made, but i'll just keep it here in case i accidentally did something. import 'package:flutter/material.dart';
import 'package:flutter_tex/flutter_tex.dart';
class Quiz {
final String statement;
final List<QuizOption> options;
final String correctOptionId;
Quiz(
{required this.statement,
required this.options,
required this.correctOptionId});
}
class QuizOption {
final String id;
final String option;
QuizOption(this.id, this.option);
}
class TeXViewQuizExample extends StatefulWidget {
const TeXViewQuizExample({super.key});
@override
State<TeXViewQuizExample> createState() => _TeXViewQuizExampleState();
}
class _TeXViewQuizExampleState extends State<TeXViewQuizExample> {
int currentQuizIndex = 0;
String selectedOptionId = "";
bool isWrong = false;
List<Quiz> quizList = [
Quiz(
statement: r"""<h3>What is the correct form of quadratic formula?</h3>""",
options: [
QuizOption(
"id_1",
r""" <h2>(A) \(x = {-b \pm \sqrt{b^2+4ac} \over 2a}\)</h2>""",
),
QuizOption(
"id_2",
r""" <h2>(B) \(x = {b \pm \sqrt{b^2-4ac} \over 2a}\)</h2>""",
),
QuizOption(
"id_3",
r""" <h2>(C) \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)</h2>""",
),
QuizOption(
"id_4",
r""" <h2>(D) \(x = {-b + \sqrt{b^2+4ac} \over 2a}\)</h2>""",
),
],
correctOptionId: "id_3",
),
Quiz(
statement:
r"""<h3>Choose the correct mathematical form of Bohr's Radius.</h3>""",
options: [
QuizOption(
"id_1",
r""" <h2>(A) \( a_0 = \frac{{\hbar ^2 }}{{m_e ke^2 }} \)</h2>""",
),
QuizOption(
"id_2",
r""" <h2>(B) \( a_0 = \frac{{\hbar ^2 }}{{m_e ke^3 }} \)</h2>""",
),
QuizOption(
"id_3",
r""" <h2>(C) \( a_0 = \frac{{\hbar ^3 }}{{m_e ke^2 }} \)</h2>""",
),
QuizOption(
"id_4",
r""" <h2>(D) \( a_0 = \frac{{\hbar }}{{m_e ke^2 }} \)</h2>""",
),
],
correctOptionId: "id_1",
),
Quiz(
statement: r"""<h3>Select the correct Chemical Balanced Equation.</h3>""",
options: [
QuizOption(
"id_1",
r""" <h2>(A) \( \ce{CO + C -> 2 CO} \)</h2>""",
),
QuizOption(
"id_2",
r""" <h2>(B) \( \ce{CO2 + C -> CO} \)</h2>""",
),
QuizOption(
"id_3",
r""" <h2>(C) \( \ce{CO + C -> CO} \)</h2>""",
),
QuizOption(
"id_4",
r""" <h2>(D) \( \ce{CO2 + C -> 2 CO} \)</h2>""",
),
],
correctOptionId: "id_4",
),
];
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
appBar: AppBar(
title: const Text("TeXView Quiz"),
),
body: ListView(
physics: const ScrollPhysics(),
children: <Widget>[
Text(
'Quiz ${currentQuizIndex + 1}/${quizList.length}',
style: const TextStyle(fontSize: 20),
textAlign: TextAlign.center,
),
TeXView(
child: TeXViewColumn(children: [
TeXViewDocument(quizList[currentQuizIndex].statement,
style:
const TeXViewStyle(textAlign: TeXViewTextAlign.center)),
TeXViewGroup(
children: quizList[currentQuizIndex]
.options
.map((QuizOption option) {
return TeXViewGroupItem(
rippleEffect: false,
id: option.id,
child: TeXViewDocument(option.option,
style: const TeXViewStyle(
padding: TeXViewPadding.all(10))));
}).toList(),
selectedItemStyle: TeXViewStyle(
borderRadius: const TeXViewBorderRadius.all(10),
border: TeXViewBorder.all(TeXViewBorderDecoration(
borderWidth: 3, borderColor: Colors.green[900])),
margin: const TeXViewMargin.all(10)),
normalItemStyle:
const TeXViewStyle(margin: TeXViewMargin.all(10)),
onTap: (id) {
selectedOptionId = id;
setState(() {
isWrong = false;
});
})
]),
style: const TeXViewStyle(
margin: TeXViewMargin.all(5),
padding: TeXViewPadding.all(10),
borderRadius: TeXViewBorderRadius.all(10),
border: TeXViewBorder.all(
TeXViewBorderDecoration(
borderColor: Colors.blue,
borderStyle: TeXViewBorderStyle.solid,
borderWidth: 5),
),
backgroundColor: Colors.white,
),
// loadingWidgetBuilder: (context) {
// return const Center(
// child: CircularProgressIndicator(),
// );
// },
),
if (isWrong)
const Padding(
padding: EdgeInsets.all(20),
child: Text(
"Wrong answer!!! Please choose a correct option.",
textAlign: TextAlign.center,
style: TextStyle(fontSize: 18, color: Colors.red),
),
),
Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
ElevatedButton(
onPressed: () {
setState(() {
if (currentQuizIndex > 0) {
selectedOptionId = "";
currentQuizIndex--;
}
});
},
child: const Text("Previous"),
),
ElevatedButton(
onPressed: () {
setState(() {
if (selectedOptionId ==
quizList[currentQuizIndex].correctOptionId) {
selectedOptionId = "";
if (currentQuizIndex != quizList.length - 1) {
currentQuizIndex++;
}
} else {
isWrong = true;
}
});
},
child: const Text("Next"),
),
],
)
],
),
);
}
}error: |
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Any solutions here? |
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Please update your Flutter SDK to at least |
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I had the same issue, fixed by updating flutter, thanks |
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Upgraded to flutter 3.27.1, PS. I did flutter clean, deleted derived data and updated pods and ran the build. Also created a new project and still same issue. Running on iOS 
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Not sure if you your problem only happens on ios If so please see Readme>How to use?>ios |
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@RyanChan548 Is it working for you? if yes, which platform? |
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I work on android |
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@RyanChan548 But there is anotther crash which i was getting in older version as well because of which i updated the package. 
This is inside the package, if i change the function to runJavascript as suggested in the error log, the error goes away. If you have any idea on this, it will be really helpful. Otherwise i will have to mute this in crashlytics. Any suggestions are appreciated. |
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@deepakjoshi17 I don't see this issue on my side but I just updated it as mentioned, please update your package to PS: I assume you're facing this issue on iOS and I don't have a MAC machine so I can't verify it. |
../.pub-cache/hosted/pub.dev/flutter_tex-4.0.10/lib/src/utils/tex_rendering_server.dart:19:11: Error: Undefined name 'LocalHostServer'.
await LocalHostServer.start(port: port);
^^^^^^^^^^^^^^^
../.pub-cache/hosted/pub.dev/flutter_tex-4.0.10/lib/src/utils/tex_rendering_server.dart:20:14: Error: Undefined name 'LocalHostServer'.
server = LocalHostServer.server;
^^^^^^^^^^^^^^^
../.pub-cache/hosted/pub.dev/flutter_tex-4.0.10/lib/src/utils/tex_rendering_server.dart:65:11: Error: Undefined name 'LocalHostServer'.
await LocalHostServer.close();
^^^^^^^^^^^^^^^
../.pub-cache/hosted/pub.dev/flutter_tex-4.0.10/lib/src/utils/style_utils.dart:8:27: Error: The getter 'r' isn't defined for the class 'Color'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'r'.
return "rgba(${((color?.r ?? 0) * 255).toInt()}, ${((color?.g ?? 0) * 255).toInt()}, ${((color?.b ?? 0) * 255).toInt()}, ${((color?.a ?? 0) * 255).toInt()})";
^
../.pub-cache/hosted/pub.dev/flutter_tex-4.0.10/lib/src/utils/style_utils.dart:8:63: Error: The getter 'g' isn't defined for the class 'Color'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'g'.
return "rgba(${((color?.r ?? 0) * 255).toInt()}, ${((color?.g ?? 0) * 255).toInt()}, ${((color?.b ?? 0) * 255).toInt()}, ${((color?.a ?? 0) * 255).toInt()})";
^
../.pub-cache/hosted/pub.dev/flutter_tex-4.0.10/lib/src/utils/style_utils.dart:8:99: Error: The getter 'b' isn't defined for the class 'Color'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'b'.
return "rgba(${((color?.r ?? 0) * 255).toInt()}, ${((color?.g ?? 0) * 255).toInt()}, ${((color?.b ?? 0) * 255).toInt()}, ${((color?.a ?? 0) * 255).toInt()})";
^
../.pub-cache/hosted/pub.dev/flutter_tex-4.0.10/lib/src/utils/style_utils.dart:8:135: Error: The getter 'a' isn't defined for the class 'Color'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'a'.
return "rgba(${((color?.r ?? 0) * 255).toInt()}, ${((color?.g ?? 0) * 255).toInt()}, ${((color?.b ?? 0) * 255).toInt()}, ${((color?.a ?? 0) * 255).toInt()})";
^
Target kernel_snapshot_program failed: Exception
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