The title of license detail page isn't visible depending on the Theme configuration #63239
Description
I commented at https://github.com/flutter/flutter/pull/57588/files#r466115828 first, and it seems the problem of framework, so I've created an issue.
Steps to Reproduce
- Run
flutter create bug. - Update the main files as follows:
import 'package:flutter/material.dart';
void main() => runApp(const App());
class App extends StatelessWidget {
const App({Key key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
home: const HomePage(),
theme: ThemeData(
// A
primaryColor: Colors.blue,
// B
appBarTheme: const AppBarTheme(
color: Colors.white,
iconTheme: IconThemeData(
color: Colors.black,
),
textTheme: TextTheme(
headline6: TextStyle(
fontSize: 20,
color: Colors.black,
),
),
),
),
);
}
}
class HomePage extends StatelessWidget {
const HomePage({Key key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Example'),
),
floatingActionButton: FloatingActionButton(
onPressed: () {
showLicensePage(context: context);
},
),
);
}
}- Tap FAB and tap a license on the
Licensespage.
Expected results:
The title on the AppBar is visible.
Actual results:
The title on the AppBar isn't visible because the color of AppBar and the color of title is same.
| list(OK) | detail(NG) |
|---|---|
 |
 |
https://github.com/TonicArtos/flutter/blob/cfc0082db7e4cb1ec9da9cbf29fb7ecc5788ca13/packages/flutter/lib/src/material/about.dart#L918 seems to break the color system.
If // A is changed to Colors.yellow(light color), the title is changed to be visible.
| list(OK) | detail(OK) |
|---|---|
 |
 |
If // B is commented out, the title is changed to be visible.
| list(OK) | detail(OK) |
|---|---|
 |
 |
Logs
[ +407 ms] DevFS: Sync finished
[ ] Syncing files to device sdk gphone x86... (completed in 491ms)
[ ] Synced 1.4MB.
[ ] <- accept
[ +4 ms] Connected to _flutterView/0xf05c5380.
[ +1 ms] Flutter run key commands.
[ +1 ms] r Hot reload. 🔥🔥🔥
[ ] R Hot restart.
[ ] h Repeat this help message.
[ ] d Detach (terminate "flutter run" but leave application running).
[ ] c Clear the screen
[ ] q Quit (terminate the application on the device).
[ ] An Observatory debugger and profiler on sdk gphone x86 is available at: http://127.0.0.1:58483/bneNrZDZA7k=/
Analyzing flutter_playground...
No issues found! (ran in 2.8s)
[✓] Flutter (Channel dev, 1.21.0-1.0.pre, on macOS 11.0 20A5343i, locale en-JP)
• Flutter version 1.21.0-1.0.pre at /Volumes/Macintosh HD/Users/mono/Git/flutter
• Framework revision f25bd9c55c (3 weeks ago), 2020-07-14 20:26:01 -0400
• Engine revision 99c2b3a245
• Dart version 2.9.0 (build 2.9.0-21.0.dev 20bf2fcf56)
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• Platform android-30, build-tools 30.0.0
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• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
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• Xcode 12.0, Build version 12A8179i
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[✓] Android Studio (version 4.0)
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• Flutter plugin version 48.0.2
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[✓] VS Code (version 1.47.3)
• VS Code at /Applications/Visual Studio Code.app/Contents
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[✓] Connected device (4 available)
• sdk gphone x86 (mobile) • emulator-5554 • android-x86 • Android 11 (API 30) (emulator)
• iPhone 11 Pro (mobile) • 9FAEBEFB-D9ED-44D5-A1CB-E75CBFD41E69 • ios • com.apple.CoreSimulator.SimRuntime.iOS-14-0 (simulator)
• Web Server (web) • web-server • web-javascript • Flutter Tools
• Chrome (web) • chrome • web-javascript • Google Chrome 84.0.4147.105
• No issues found!