RecyclerView 中未调用 RecyclerAdapter 覆盖方法（OnBindViewHolder 和 onCreateViewHolder）[关闭]

Question

我正在尝试调试我的代码，但我的回收站视图没有显示任何内容。我正在尝试将 2 个回收器视图与 2 个不同的适配器一起使用，因此下面的适配器代码不起作用。我试过在上面应用日志，发现没有调用 onBindViewHolder 和 onCreateViewHolder。这对我来说已经有一段时间了。下面是我的适配器代码。

onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        return new RecordsAdapter.MyNewAdapterHolder(LayoutInflater.from(context).inflate(R.layout.records_layout,parent,false));
    }
    @Override
    public void onBindViewHolder(@NonNull RecordsAdapter.MyNewAdapterHolder holder, int position) {
        String str = PreferenceManager.getDefaultSharedPreferences(context).getString("Name", "get");
        Toast.makeText(context, "str", Toast.LENGTH_SHORT).show();
        FirebaseDatabase firebaseDatabase = FirebaseDatabase.getInstance("https://milkdiary-farmer.firebaseio.com/");
        DatabaseReference databaseReference = firebaseDatabase.getReference("Users").child("Users").child("Your Records");
        databaseReference.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                for (DataSnapshot childSnap : dataSnapshot.getChildren()){
                    String value = childSnap.getValue().toString();
                    Toast.makeText(context, "value", Toast.LENGTH_SHORT).show();
                    holder.farmername.setText(value);
                    holder.farmerRecord.setText(value);
                }
            }
            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });
        //holder.setDetails(this.recordsArrayList1.get(position));
    }
    @Override
    public int getItemCount() {
        return recordsArrayList1.size();
    }

以下是我的主要活动代码

protected void onCreate(Bundle paramBundle) {
    super.onCreate(paramBundle);
    setContentView(R.layout.activity_main2);
    Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar3);
    setSupportActionBar(toolbar);
    toolbar.setTitle("Records");
    toolbar.setTitleTextColor(-1);
    getIntent().getStringExtra("username");
    RecyclerView recyclerView1 = (RecyclerView)findViewById(R.id.recycler);

    RecyclerView recyclerView2 = findViewById(R.id.records_recyclerview);
    recordsArrayList = new ArrayList<>();
    RecordsAdapter recordsAdapter = new RecordsAdapter(this,recordsArrayList);
    recyclerView2.addItemDecoration(new DividerItemDecoration(this,1));
    recyclerView2.setAdapter(recordsAdapter);
    recyclerView2.setLayoutManager(new LinearLayoutManager(this));
    recordsAdapter.notifyDataSetChanged();
    this.recyclerView = recyclerView1;
    recyclerView1.setLayoutManager(new LinearLayoutManager(this));
    this.arrayList = new ArrayList();
    this.adapter = new MyAdapter(this, this.arrayList);
    this.recyclerView.addItemDecoration(new DividerItemDecoration(this, 1));
    this.recyclerView.setAdapter(this.adapter);

    fetch();
}

Answer 1

当您获取数据并填充您的数组列表时，您是否在适配器上调用了notifyDatasetChanged？