I'm trying to use audioplayers: ^2.0.0,but i got this error, how to solve it?please!
pubspec.yaml
flutter:
uses-material-design: true
assets:
- assets/audio/
Code
Future setAudio() async {
AudioPlayer audioPlayer = AudioPlayer();
audioPlayer.setReleaseMode(ReleaseMode.loop);
AudioCache audioCache = AudioCache(prefix: 'assets/audio/');
final url = await audioCache.load('flip.mp3');
audioPlayer.setSourceAsset(url.path);
}
You shouldn't use the full path in setSourceAsset, and since you've already set a prefix for the cache you kust have to write the filename:
audioPlayer.setSourceAsset('flip.mp3');
Related
When I try to let my flutter app show a picture(it's asset image),it throws the exception :
"Exception: Gradle task assembly debug failed with exit code 1".
What should I do in such a case ?
import 'package:flutter/material.dart';
void main()
{
runApp(Center(
child: Image(
image:AssetImage('images/mont.jpg'),
)
));
}
the pubspec.yaml file is :
flutter:
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets:
- images/mont.jpg
- images/a_dot_ham.jpg
I have a problem with flutter the assets below are not displayed inside the widget, it tells me unable to load assetss how can I do to fix this?
Dart Code:
final cookingEvent = Event(
imagePath: "assets/event_images/granite_cooking_class.jpeg",
title: "Basket",
description: "",
location: "Ferrara(FE)",
duration: "1ms",
punchLine1: "Partecipa!",
punchLine2: "nuova partita di calcio",categoryIds: [0, 2],
galleryImages: ["assets/event_images/cooking_1.jpeg", "assets/event_images/cooking_2.jpeg", "assets/event_images/cooking_3.jpeg"]);
Flutter Exception:
r: "assets/event_images/5_km_downtown_run.jpeg", scale: 1.0)
flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════
flutter: Another exception was thrown: Unable to load asset: assets/event_images/granite_cooking_class.jpeg
flutter: Another exception was thrown: Unable to load asset: assets/event_images/music_concert.jpeg
flutter: Another exception was thrown: Unable to load asset: assets/event_images/golf_competition.jpeg
Pubspec.yaml:
assets:
- assets/guest_images/
- assets/event_images/
- assets/fonts/
fonts:
- family: Montserrat
fonts:
weight: 700
Make sure that the path of your image is correct.
Then check for tab spaces.
make sure to run flutter pub get command.
Then restart your app or hot reload your app.
I am using moor package in flutter for my application. im following the instructions online
https://moor.simonbinder.eu/docs/getting-started/starting_with_sql/#what-moor-generates
but when i run the build command: flutter pub run build_runner build
the appdatabase.g.dart file that gets generated has errors. here is a snapshot of errors:
here is my dependencies
cupertino_icons: ^0.1.2
month_picker_dialog: ^0.3.1
flutter_cupertino_localizations: ^1.0.1
moor: ^2.3.0
provider: ^4.0.3
moor_ffi: ^0.4.0
path_provider: ^1.6.0
dev_dependencies:
flutter_test:
sdk: flutter
intl_translation: ^0.17.1
moor_generator: ^2.3.1
build_runner:
the problem seems to be with 'Table' class. there is a conflict between dart and moor. the message indicate there are two versions. how can i solve this problem so that my error goes away
the answer is to use import 'package:flutter/widgets.dart' hide Table;
dependencies:
flutter:
sdk: flutter
#moor database
moor_flutter: ^3.1.0
# For the UI
provider: ^4.3.1
# For OS-specific directory paths
path_provider: ^1.6.11
cupertino_icons: ^0.1.3
dev_dependencies:
flutter_test:
sdk: flutter
#new Dependencies add
moor_generator: ^3.2.0
build_runner:
Step 1 : delete file appdatabase.g.dart
step 2: flutter clean
Step 3: flutter pub get
Step 4: flutter pub run build_runner build watch
This error occurs when you don't have the 'import' of your table or dao in your AppDb class, in my case I have more than 90 tables and dao's, I separated then in a class with a static list, but I need do the imports of my files in the app_database.dart too, because of the error.
I have this class for tables:
import '../tables/table_one.dart';
import '../tables/table_two.dart';
class TableList {
static const List<Type> tables = [
TableOne,
TableTwo,
]
}
And another for Dao files:
import '../dao/table_one_dao.dart';
import '../dao/table_two_dao.dart';
class DaoList{
static const List<Type> daos= [
TableOne,
TableTwo,
]
}
And this is my AppDb class:
import '../tables/table_one.dart';
import '../tables/table_two.dart';
import '../dao/table_one_dao.dart';
import '../dao/table_two_dao.dart';
part 'app_db.g.dart';
#DriftDatabase(
tables: TableList.tables,
daos: DaoList.daos,
)
class AppDb extends _$AppDb {
AppDb() : super(_openConnection());
#override
int get schemaVersion => 1;
}
LazyDatabase _openConnection() {
return LazyDatabase(() async {
final dbFolder = await getApplicationDocumentsDirectory();
final file = File(p.join(dbFolder.path, 'app_database.db'));
return NativeDatabase(file);
});
}
As you see, i have to declare the imports again in my AppDb file to resolve. If you declare your tables directly in the AppDb escope, i think you don't have problem.
I know I placed my text file at the location assets\chat1.txt, and my code also works with other txts but somehow I always get the following error:
Exception has occurred.
FlutterError (Unable to load asset: assets/chat1.txt)
my Code:
Future<String> getFileData(String path) async {
return await rootBundle.loadString(path);
}
pubspec.yaml
flutter:
assets:
- assets/
Add the full path in pubspec.yaml file and you should consider the indentation for assets:
flutter:
assets:
- assets/chat1.txt
I'm having some trouble loading text assets in flutter (1.0).
This is the current code attempting to read the asset.
Future<String> get _localPath async {
final directory = await getApplicationDocumentsDirectory();
return directory.path;
}
Future<String> getFileData(String path) async {
return await rootBundle.loadString(path);
}
Future<File> get _localFile async {
final path = await _localPath;
final file = File('$path/toon_test_3.json');
bool exists = file.existsSync();
if(exists){
return file;
} else {
// Load the default file
final newfile = await getFileData('toonRepo/data.json');
return file.writeAsString(newfile);
}
}
loadString will failing popping up the following:
Could not load source 'dart:core/runtime/libobject_patch.dart': <source not available>.
If execution continues the following exception is raised:
Exception has occurred.
FlutterError (Unable to load asset: toonRepo/data.json)
I've tried a lot of solutions here that revolve around the asset section in pubspec.yaml
name: hello_world
description: A new Flutter project.
version: 1.0.0+1
environment:
sdk: ">=2.0.0-dev.68.0 <3.0.0"
dependencies:
path_provider: ^0.4.1
flutter:
sdk: flutter
cupertino_icons: ^0.1.2
english_words: ^3.1.0
dev_dependencies:
flutter_test:
sdk: flutter
flutter:
assets:
- toonRepo/
uses-material-design: true
Am I going wrong somewhere very silly?
Cheers for any pointers you have.
Project Structure
Here is a temporary copy of the code if you want to take a peek.
Github
And here's a stack trace
[VERBOSE-2:shell.cc(184)] Dart Error: Unhandled exception:
Unable to load asset: toonRepo/data.json
#0 PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:221:7)
<asynchronous suspension>
#1 AssetBundle.loadString (package:flutter/src/services/asset_bundle.dart:67:33)
<asynchronous suspension>
#2 CachingAssetBundle.loadString.<anonymous closure> (package:flutter/src/services/asset_bundle.dart:162:56)
#3 __InternalLinkedHashMap&_HashVMBase&MapMixin&_LinkedHashMapMixin.putIfAbsent (dart:collection/runtime/libcompact_hash.dart:284:23)
The asset access works fine with the pubspec.yaml in your question.
new Text("Name: " + toon.info.name)),
fails because toon is null because it never got a value assigned.
You could use new Text("Name: " + (toon?.info?.name ?? 'foo')), to work around the exception.
If you add
widget.storage.getFileData('toonRepo/data.json').then((f) => print(f));
to _FlutterDemoState.initState(), you'll see that reading the asset works just fine.