T 导航抽屉，其片段具有 Tablayout 和 ViewPager 作为子片段，但我无法查看附加

如何解决T 导航抽屉，其片段具有 Tablayout 和 ViewPager 作为子片段，但我无法查看附加

我有一个带有多个片段的导航抽屉，而一个片段上有多个片段 UsersFragment 它有一个 Tablayout 和 ViewPager，带有片段和一个子项，但我无法查看附有标签的片段，并且无法滑动。

这在我的片段中 导航抽屉中的UsersFragment

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="@drawable/white_rectangle_background"
    tools:context=".UsersFragment">

    <!-- TODO: Update blank fragment layout -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        tools:ignore="MissingConstraints"
        android:id="@+id/layoutToper"
        android:layout_marginTop="50dp"
        android:background="@drawable/header_background"
        >

        <com.google.android.material.appbar.AppBarLayout
            android:id="@+id/appBarLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            >
            <com.google.android.material.tabs.TabLayout
                android:id="@+id/usersTabLayout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:tabBackground="@color/colorPrimary"
                app:tabIndicatorColor="@color/colorWhite"
                app:tabTextColor="@color/colorWhite"/>
        </com.google.android.material.appbar.AppBarLayout>

        <androidx.viewpager.widget.ViewPager
            android:id="@+id/usersViewPager"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            tools:ignore="MissingConstraints"
            tools:layout_editor_absoluteX="0dp"
            tools:layout_editor_absoluteY="0dp" />
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

UsersViewPager 适配器

package com.okellomwaka.yowasteadminapp.adapters;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentStatePagerAdapter;

import java.util.ArrayList;
import java.util.List;

public class UsersViewPagerAdapter extends FragmentStatePagerAdapter {

    private List <Fragment> fragmentList= new ArrayList<>();
    private List<String> titleList = new ArrayList<>();

    public UsersViewPagerAdapter(@NonNull FragmentManager fm) {
        super(fm);
    }

    @NonNull
    @Override
    public Fragment getItem(int position) {
        return fragmentList.get(position);
    }

    @Override
    public int getCount() {
        return fragmentList.size() ;
    }

    @Nullable
    @Override
    public CharSequence getPageTitle(int position) {
        return titleList.get(position);
    }

    public  void addFragment  (Fragment fragment,String title){
        fragmentList.add(fragment);
        titleList.add(title);
    }


}

UsersFragment JAVA

package com.okellomwaka.yowasteadminapp;
import android.content.Context;
import android.os.Bundle;

import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.viewpager.widget.ViewPager;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;


import com.google.android.material.tabs.TabLayout;
import com.okellomwaka.yowasteadminapp.Fragments.UsersAdminFragment;
import com.okellomwaka.yowasteadminapp.Fragments.UsersCustomersFragment;
import com.okellomwaka.yowasteadminapp.Fragments.UsersHualerFragment;
import com.okellomwaka.yowasteadminapp.adapters.UsersViewPagerAdapter;


public class UsersFragment extends Fragment {
     View myFragment;
    TabLayout tabLayout;
    ViewPager viewPager;
    public UsersFragment(){

    }

    public UsersFragment getInstance (){
        return new UsersFragment();
    }


    @Override
    public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        myFragment= inflater.inflate(R.layout.fragment_users,container,false);

        viewPager=myFragment.findViewById(R.id.usersViewPager);
        tabLayout=myFragment.findViewById(R.id.usersTabLayout);

        return  myFragment;
    }
    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
     // final Context context= getActivity();
        setUpViewPager( viewPager);
        tabLayout.setupWithViewPager(viewPager);

        tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
           //     Toast.makeText(context,"Context Text",Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });
    }

    private void setUpViewPager(ViewPager viewPager) {
       UsersViewPagerAdapter adapter = new UsersViewPagerAdapter(getChildFragmentManager());

       adapter.addFragment(new UsersAdminFragment(),"Admins");
       adapter.addFragment(new UsersCustomersFragment(),"Customers");
       adapter.addFragment(new UsersHualerFragment(),"Hualers");

       viewPager.setAdapter(adapter);
    }
}

我的每个 TAB 布局都有一个类似的布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary"
    tools:context=".Fragments.UsersAdminFragment">

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Users-Admins"
        android:textSize="50sp"
        android:padding="50dp"
        android:gravity="center"
        tools:layout_editor_absoluteY="237dp" />
</RelativeLayout>

我的每个 TAB 布局都有一个类似的代码

import android.view.ViewGroup;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;

import com.okellomwaka.yowasteadminapp.R;

public class UsersAdminFragment extends Fragment {


    @Override
    public void onAttach(@NonNull Context context) {
        super.onAttach(context);
    }

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater,@Nullable ViewGroup container,@Nullable Bundle savedInstanceState) {
        Toast.makeText(this.getContext(),"gggg",Toast.LENGTH_SHORT).show();
        return inflater.inflate(R.layout.users_admins_tab,false);
       // return super.onCreateView(inflater,savedInstanceState);
    }
}