Android 项目混编flutter报错

报错信息

java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/lifecycle/DefaultLifecycleObserver;
        at io.flutter.embedding.engine.FlutterEngine.<init>(FlutterEngine.java:152)
        at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.setupFlutterEngine(FlutterActivityAndFragmentDelegate.java:221)
        at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onAttach(FlutterActivityAndFragmentDelegate.java:145)
        at io.flutter.embedding.android.FlutterActivity.onCreate(FlutterActivity.java:399)
        at android.app.Activity.performCreate(Activity.java:8066)

解决方法一：在app的gradle里面，添加如下依赖：

implementation "androidx.lifecycle:lifecycle-common-java8:2.2.0"

解决方法二：下载最新的flutter的SDK。