在Firebase中有多个类，当我通过回收器适配器获得它时，“适配器”在不同的if else语句中声明。onStart和onStop不起作用

public class MyActivity extends AppCompatActivity {
    private RecyclerView mRecyclerView;
    private FirebaseRecyclerAdapter mAdapter;
    private DatabaseReference mDatabaseRef;

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

        mRecyclerView = findViewById(R.id.recycler_view);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));

        mDatabaseRef = FirebaseDatabase.getInstance().getReference().child("data");

        mAdapter = new FirebaseRecyclerAdapter<DataModel, DataViewHolder>(
                DataModel.class,
                R.layout.item_data,
                DataViewHolder.class,
                mDatabaseRef
        ) {
            @Override
            protected void populateViewHolder(DataViewHolder viewHolder, DataModel model, int position) {
                // 绑定数据到视图
            }
        };

        mRecyclerView.setAdapter(mAdapter);
    }

    @Override
    protected void onStart() {
        super.onStart();
        mAdapter.startListening();
    }

    @Override
    protected void onStop() {
        super.onStop();
        mAdapter.stopListening();
    }

    public static class DataViewHolder extends RecyclerView.ViewHolder {
        // ViewHolder的定义
    }
}