android - Unresolved reference : embedding and Unresolved reference: FlutterActivity in MainActivity. kt

Question

我的 flutter 应用程序运行良好，直到我停止成功构建的日子
android/app/src/main/kotlin/com/apps/myapp/MainActivity.kt 文件

package com.apps.myapp

import io.flutter.embedding.android.FlutterActivity

class MainActivity: FlutterActivity() {
 
}

控制台

Built build/app/outputs/repo.
Building plugin workmanager...
✓ Built build/app/outputs/repo.
e: /home/apps/myapp/android/app/src/main/kotlin/com/apps/myapp/MainActivity.kt: (3, 19): Unresolved reference: embedding
e: /home/apps/myapp/android/app/src/main/kotlin/com/apps/myapp/MainActivity.kt: (5, 21): Unresolved reference: FlutterActivity

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.

请帮助解决此问题!谢谢你。

Answer 1

确保您至少使用 flutter 2.2.2。我有同样的问题，但我能够通过以下方式解决它:

更新我在 pubspec.yaml 中的所有 flutter 插件

更新 flutter 到 2.2.2

尽量避免在 native 端使用插件(如果不需要)

compileSdkVersion 30 和 targetSdkVersion 30

ext.kotlin_version = '1.4.32'

类路径 'com.android.tools.build:gradle:4.0.1'

android.enableR8=true 在你的 android/gradle.properties