Я был на шаге 3, тест-драйв в учебнике флаттера , и я застрял с этой трассировкой стека:
Launching lib\main.dart on SM A107F in debug mode...
Running Gradle task 'assembleDebug'...
e: Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath:
class io.flutter.embedding.android.FlutterActivity, unresolved supertypes: android.app.Activity
class io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.Host, unresolved supertypes: java.lang.Object
class io.flutter.embedding.android.SplashScreenProvider, unresolved supertypes: java.lang.Object
class io.flutter.embedding.android.FlutterEngineProvider, unresolved supertypes: java.lang.Object
class io.flutter.embedding.android.FlutterEngineConfigurator, unresolved supertypes: java.lang.Object
class io.flutter.embedding.android.FlutterActivityAndFragmentDelegate, unresolved supertypes: java.lang.Object
class androidx.lifecycle.LifecycleOwner, unresolved supertypes: java.lang.Object
class io.flutter.plugins.GeneratedPluginRegistrant, unresolved supertypes: Object
class io.flutter.embedding.engine.FlutterEngine, unresolved supertypes: java.lang.Object
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:compileDebugKotlin'.
> Compilation error. See log for more details
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 15s
Finished with error: Gradle task assembleDebug failed with exit code 1
Я переместил android studio sdk вручную из C: \ Users {пользователь} \ AppData \ Local в C: \ dev , связанный по пути среды.
Затем удалил SDK (я был разочарован IDK почему), а затем отправился в android studio для повторной загрузки пакетов SDK.
Я использую VS Code. Установлено Флаттер 1.12.13 + исправление.8 .
SDK установочные списки image