Android Studio: Failed resolution of: Landroidx/core/view/MenuHost

 我这儿的build.gradle配置是这样的：

 报错为：

stackoverflow的解答：java - Android studio: cannot access MenuHost class file for androidx.core.view.MenuHost not found - Stack Overflowhttps://stackoverflow.com/questions/70125444/android-studio-cannot-access-menuhost-class-file-for-androidx-core-view-menuhos

 将MainActivity中的extends AppCompatActivity改为extends Activity就行了