Cannot run the app to Pi 4B #22
Comments
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@EnziinSystem Thanks for opening this issue I can see this line in the error text Is the pubspec.yaml file missing from the root of your project? |
I use Windows for development and deploy to a Pi-4 or Pi-5. So my project on Windows works on Windows itself and Android, iOS and of course, it has a pubspec.yaml file in the root directory. This error only appears on Pi-4B and not on other platforms. It seems to be related to the process of copying files from Windows to Pi-4
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Yes you are right that's the problem Can you tell me which version of the snapp_cli do you use? |
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Also, Can you check that you can use passwordless ssh connection? I mean, you should be able to connect to your raspberry with this simple command without entering the password
example |
I still connect SSH via authorized_keys without a password. On the Pi-4B I installed snap_installer and tested without any errors. More importantly, I was able to run an application developed on Windows, connected to Pi4B with full hot-reload. However, later times it cannot be done anymore. Or in short, I did it once. |
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This is very strange. If it's possible for you, I would suggest to set time and try to debug it together. |
I agree with your suggestion, you can even use Teamviewer to access my computer directly. |
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Hi any news related to this issue? after execute Unfortunately I have the following errors. Building Linux application... kind regards |
I think you issue is related to your flutter SDK version Make sure that you have the same version of the flutter both on your Host and your remote. |
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Thanks for quick reply. I will check it 👍🏻 |
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I checked flutter version on both Pi-5 and PC On Pi-5 (and Pi-4B) On PC For detail, run snapp_cli in Verbose mode Run an app demo from PC deploy to Pi-5 List root path project The problem is unsolved. |
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I check the flutter versions on host and pi. On pi it was 3.19.6 and on host 3.19.4. After update to same version no more issues. 👍🏻 |
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Steps that create this problem: Step 1: Create a new project by VS Code Step 2: Add window_manager plugin to pubspec.yaml VS Code automation run flutter pub get plugins Step 3: Run deploy to Pi-5 However, the application can still compile and run on Windows. The reason is the window_manager plugin, but I don't have the ability to find out specifically. Update: I found that any project that uses standard packages other than the counter basic app when creating a new project causes the above error. This example uses the Bloc package, a common design pattern, which also causes an error: |
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I could try to test this scenario with macOS for now. Snapp cli is working perfectly even if you have added some plugins Example: import 'package:flutter/material.dart';
import 'package:window_manager/window_manager.dart';
Future<void> main() async {
WidgetsFlutterBinding.ensureInitialized();
// Must add this line.
await windowManager.ensureInitialized();
WindowOptions windowOptions = const WindowOptions(
size: Size(800, 600),
center: true,
backgroundColor: Colors.transparent,
skipTaskbar: false,
titleBarStyle: TitleBarStyle.hidden,
);
windowManager.waitUntilReadyToShow(windowOptions, () async {
await windowManager.show();
await windowManager.focus();
});
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
const Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headlineMedium,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: const Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}
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I will also try to reproduce this in windows and linux. But probably your problem is related to file/folder access permission. Can you try to reproduce this with root user? |
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I will close this issue for now Feel free to reopen it if you had the same problem |
I can list devices
However, it cannot run an application to Pi 4 on debug mode
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