RecyclerView 項目不可見

Question

RecyclerView 項目不可見我正在使用字符串數組名稱項目測試並將其傳遞給字符串數組列表，我之前使用過相同的想法並且工作正常

    listItemsTest = new ArrayList<>(Arrays.asList(itemsTest));
    recyclerView = findViewById(R.id.RecycleViewTest);
    recycleViewAdapterTest = new RecycleViewAdapterTest(this,listItemsTest);
    recyclerView.setAdapter(recycleViewAdapterTest);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));

---

我的適配器

public class RecycleViewAdapterTest extends 
RecyclerView.Adapter<RecycleViewAdapterTest.MyViewHolder> {

private ArrayList<String> ListTest;
Context context;

public RecycleViewAdapterTest(Context context, ArrayList<String> listTest) {

    this.ListTest = listTest;
    this.context = context;
}

@NonNull
@Override
public RecycleViewAdapterTest.MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.test_list,parent,false);
    MyViewHolder holder = new MyViewHolder(view);

    return holder;
}

@Override
public void onBindViewHolder(@NonNull RecycleViewAdapterTest.MyViewHolder holder, int position) {

}

@Override
public int getItemCount() {
    return ListTest.size();
}

public static class MyViewHolder extends RecyclerView.ViewHolder {

    LinearLayout linearLayout;
    TextView textView;

    public MyViewHolder(@NonNull View itemView) {
        super(itemView);
        linearLayout = itemView.findViewById(R.id.LLTest);
        textView = itemView.findViewById(R.id.textViewTest);

    }
}

Answer 1

@Override
public void onBindViewHolder(@NonNull RecycleViewAdapterTest.MyViewHolder holder, int position) {
    String value = this.ListTest.get(position);
    holder.textView.setText(value);// Try to make the textView public
}

Answer 2

因為您需要在OnBindViewHolder 中為 viewholder 的 textview 設置列表值。 :(