将数据从 Activity 传递到 Tab Layout Fragment

如何解决将数据从 Activity 传递到 Tab Layout Fragment

嘿，我想将数据从活动传递到带有 View Pager 2 的 Tab Layout 下的片段。当我尝试将此数据从活动传递到直接片段时，我认为它失败了，因为它是一个 Tab 布局片段。

活动

这是我想传递数据的活动 String "gameid " 这是我要传递的数据

public class BettingPage extends AppCompatActivity {


    public CardView matchCard;
    TextView gameio;
    ImageView gamebanner;
    TabLayout tabLayout;
    ViewPager2 pager2;
    bettingpage_tabviewer adapter;
//    private RecyclerView recyclerView;
//    private FirebaseDatabase firebaseDatabase;
//    private DatabaseReference databaseReference;
    private MatchAdapter matchAdapter;
    private ArrayList<MatchModel> gList;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_betting_page);


        gameio = findViewById(R.id.demo2);

        String gameid = getIntent().getStringExtra(GAME_ID);
        String banner = getIntent().getStringExtra(BANNER);

        gamebanner = findViewById(R.id.gamebanner);
        tabLayout = findViewById(R.id.bettingtabs);
        pager2 = findViewById(R.id.bettingpagetab);


        Glide.with(this).load(banner).into(gamebanner);



        FragmentManager fm = getSupportFragmentManager();
        final FragmentTransaction fragmentTransaction = fm.beginTransaction();
        final matchtab myFragment = new matchtab();



//        Bundle bundle = new Bundle();
//        bundle.putString("gameid",gameid);
//        myFragment.setArguments(bundle);
//        fragmentTransaction.add(R.id.matchfragment,myFragment);
//        fragmentTransaction.commit();

        adapter = new bettingpage_tabviewer(fm,getLifecycle());
        pager2.setAdapter(adapter);

        tabLayout.addTab(tabLayout.newTab().setText("Match Tab"));
        tabLayout.addTab(tabLayout.newTab().setText("Result Tab"));

        tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
                pager2.setCurrentItem(tab.getPosition());
            }

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

            }

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

            }
        });

        pager2.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
            @Override
            public void onPageSelected(int position) {
                tabLayout.selectTab(tabLayout.getTabAt(position));
            }
        });

 showFrag();


    }
    private void showFrag() {


        String gameid = getIntent().getStringExtra(GAME_ID);

        matchtab matchtab = new matchtab();
        matchtab.SetData(gameid);

        getSupportFragmentManager()
                .beginTransaction()
                .add(R.id.matchfragment,matchtab)
                .commit();
    }

}

片段

这是我想从活动中获取数据的片段

    String demo;

    RecyclerView matachrecyclerview;
    private MyAdapter adapter;
    private ArrayList<Model> gList;


    public matchtab() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {

        View v = inflater.inflate(R.layout.fragment_matchtab,container,false);

        TextView demo1;

        demo1 = v.findViewById(R.id.fragt);
        demo1.setText(demo);

        // Recycler View
        matachrecyclerview = v.findViewById(R.id.matchrecyclerview);
        gList = new ArrayList<>();
         FirebaseDatabase db = FirebaseDatabase.getInstance();
//        DatabaseReference root = db.getReference("Match").child(gameid);
        DatabaseReference root = db.getReference("Match").child("game1");
        root.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot snapshot) {

                for (DataSnapshot dataSnapshot : snapshot.getChildren()){
                    Model model = dataSnapshot.getValue(Model.class);
                    gList.add( new Model(model.title,model.amt));

                    Log.i("THE_CURRENT_USER:::",model.toString());
                }
                LinearLayoutManager im = new LinearLayoutManager((getContext()));
                matachrecyclerview.setLayoutManager(im);
                adapter = new MyAdapter(getContext(),gList);
                matachrecyclerview.setAdapter(adapter);
            }
            @Override
            public void onCancelled(@NonNull DatabaseError error) {
            }
        });
        return v;
    }   

}

标签布局查看器

我想将数据传递给 matchtab() 片段

package com.example.bet;


public class bettingpage_tabviewer extends FragmentStateAdapter {



    public bettingpage_tabviewer(@NonNull FragmentManager fragmentManager,@NonNull Lifecycle lifecycle) {
        super(fragmentManager,lifecycle);

    }

    @NonNull
    @Override
    public Fragment createFragment(int position) {

        switch (position)
        {
            case 0 :
                return new resulttab();
        }


        return new matchtab();
    }

    @Override
    public int getItemCount() {
        return 2;
    }}