Java NavigationDrawer无法强制转换为接口

我试图实现一个在片段之间传递数据的接口，我在这里被卡住了，我正在单击recycler视图上的listener，当有选择时，我希望值显示在另一个片段中

2020-10-16 00:17:21.541 21250-21250/com.example.iszo_dev E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.iszo_dev, PID: 21250
    java.lang.ClassCastException: com.example.iszo_dev.Activity.NavigationDrawer cannot be cast to com.example.iszo_dev.Interface.Communicator
        at com.example.iszo_dev.Activity.ui.home.MenuCardFragment$2.onBindViewHolder(MenuCardFragment.java:197)
        at com.example.iszo_dev.Activity.ui.home.MenuCardFragment$2.onBindViewHolder(MenuCardFragment.java:161)
        at com.firebase.ui.database.FirebaseRecyclerAdapter.onBindViewHolder(FirebaseRecyclerAdapter.java:122)
        at androidx.recyclerview.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:7065)
        at androidx.recyclerview.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:7107)
        at androidx.recyclerview.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:6012)
        at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6279)
        at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6118)
        at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6114)
        at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2303)
        at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1627)
        at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1587)
        at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:665)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4134)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3851)
        at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4404)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at androidx.constraintlayout.widget.ConstraintLayout.onLayout(ConstraintLayout.java:1762)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:383)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:321)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at androidx.recyclerview.widget.RecyclerView$LayoutManager.layoutDecoratedWithMargins(RecyclerView.java:9587)
        at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1685)
        at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1587)
        at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:665)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4134)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3851)
        at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4404)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at androidx.viewpager2.widget.ViewPager2.onLayout(ViewPager2.java:527)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1982)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1826)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1735)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:383)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:321)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at androidx.constraintlayout.widget.ConstraintLayout.onLayout(ConstraintLayout.java:1762)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
2020-10-16 00:17:21.542 21250-21250/com.example.iszo_dev E/AndroidRuntime:     at com.google.android.material.appbar.HeaderScrollingViewBehavior.layoutChild(HeaderScrollingViewBehavior.java:148)
        at com.google.android.material.appbar.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:43)
        at com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:1996)
        at androidx.coordinatorlayout.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:918)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at androidx.drawerlayout.widget.DrawerLayout.onLayout(DrawerLayout.java:1231)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:383)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:321)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1982)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1826)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1735)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:383)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:321)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1982)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1826)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1735)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:383)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:321)
        at com.android.internal.policy.DecorView.onLayout(DecorView.java:751)
        at android.view.View.layout(View.java:17838)
        at android.view.ViewGroup.layout(ViewGroup.java:5754)
        at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2711)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2384)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1462)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6965)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:907)
        at android.view.Choreographer.doCallbacks(Choreographer.java:709)
        at android.view.Choreographer.doFrame(Choreographer.java:644)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:893)
        at android.os.Handler.handleCallback(Handler.java:836)
        at android.os.Handler.dispatchMessage(Handler.java:103)
        at android.os.Looper.loop(Looper.java:203)
        at android.app.ActivityThread.main(ActivityThread.java:6251)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1063)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:924)

以及：

问题是：

java.lang.ClassCastException: com.example.iszo_dev.Activity.NavigationDrawer cannot be cast to com.example.iszo_dev.Interface.Communicator at

它取决于

final Communicator=（Communicator）getActivity（）

您
活动
必须扩展或实现
通信器
使用stack Trace发布stacktracei更新检查此行：
com.example.iszo_dev.Activity.ui.home.MenuCardFragment$2.onBindViewHolder（MenuCardFragment.java:197）
您的活动是否扩展或实现了Communicator？我做到了，现在它就像一个符咒一样工作
java.lang.ClassCastException: com.example.iszo_dev.Activity.NavigationDrawer cannot be cast to com.example.iszo_dev.Interface.Communicator at