我正在使用 youtube_player_flutter 插件版本 9.0.1 在我的应用程序中播放 youtube 视频，但出现以下错误 -
The following assertion was thrown building RawYoutubePlayer(dirty, dependencies: [InheritedYoutubePlayer], state: _RawYoutubePlayerState#d7415):
A platform implementation for `flutter_inappwebview` has not been set. Please ensure that an implementation of `InAppWebViewPlatform` has been set to `InAppWebViewPlatform.instance` before use. For unit testing, `InAppWebViewPlatform.instance` can be set with your own test implementation.
'package:flutter_inappwebview_platform_interface/src/in_app_webview/platform_inappwebview_widget.dart':
Failed assertion: line 202 pos 7: 'InAppWebViewPlatform.instance != null'
这是我使用这个插件的代码-
import 'package:flutter/material.dart';
import 'package:fitness_project/models/workout.dart';
import 'package:youtube_player_flutter/youtube_player_flutter.dart';
class WorkoutDetail extends StatefulWidget{
Workout? workout;
WorkoutDetail({super.key,this.workout});
@override
WorkoutDetailState createState() => WorkoutDetailState(workout: workout);
}
class WorkoutDetailState extends State<WorkoutDetail>{
Workout? workout;
WorkoutDetailState({this.workout});
YoutubePlayerController controller = YoutubePlayerController(
initialVideoId: 'CbggneVFrx8',
flags: YoutubePlayerFlags(autoPlay:false,
),
);
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(automaticallyImplyLeading: false,
backgroundColor: Colors.indigoAccent,
title: Text(("Workout Details"),
style:const TextStyle(color: Colors.white)),
),
backgroundColor: Colors.black,
body: Container(
child: Center(
child:Container(
child:Column(mainAxisAlignment: MainAxisAlignment.center ,
children: [
YoutubePlayer(
controller: controller,
),
Container(decoration: BoxDecoration(border: Border.all(color: Colors.white),
color: Colors.white24,
borderRadius: BorderRadius.all(Radius.circular(15)) ),
height: 150,
padding: EdgeInsets.only(top:10,bottom: 20),
margin: EdgeInsets.only(left: 20,right:20,top:15,bottom:15),
child: Column(children: [
Text("Steps to do this workout ",style: TextStyle(color: Colors.white, fontSize: 24)),
Divider(color: Colors.white, indent: 10,endIndent:10 ),
Expanded(child: Container(
child: Text("Put your hands on ground and jump ",
style: TextStyle(color: Colors.white, fontSize: 19)), ))
],)
)],
))))
);
}
}
我已将 minSdkVersion 设置为 21 android.useAndroidX=true 和 android.enableJetifier=true 并且 android gradle 插件版本为 7.3.0。我是颤振新手，非常感谢任何帮助。
这是我的 pubspec.yaml-
name: fitness_project
description: "A new Flutter project."
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
# In Windows, build-name is used as the major, minor, and patch parts
# of the product and file versions while build-number is used as the build suffix.
version: 1.0.0+1
environment:
sdk: '>=3.2.5 <4.0.0'
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.2
firebase_core: ^2.27.0
firebase_auth: ^4.17.8
cloud_firestore: ^4.15.8
youtube_player_flutter: ^9.0.1
syncfusion_flutter_gauges: ^25.1.39
dev_dependencies:
flutter_test:
sdk: flutter
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^2.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter packages.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets:
- assets/images/
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
在
<head><script
type="application/javascript"
src="assets/packages/flutter_inappwebview_web/assets/web/web_support.js"
defer
></script>
重要提示：即使您不是专门针对/运行网络应用程序，也必须添加此脚本。