如何通过单击每个项目中的复选框滚动到下一个项目（recyclerview）

Question

请原谅我的英语。

我的清单包含 100 项。每个项目由两个复选框组成，每次单击复选框时我都想滚动到下一个项目。

请给我最佳答案链接 如果这个问题已经被回答

这是我的自定义适配器

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

private ArrayList answerFirst;
private ArrayList answerSecond;
private Context context;

public CustomAdapter(Context  context, ArrayList questionList, ArrayList 
answerFirst, ArrayList answerSecond) {
    this.context = context;
    this.answerFirst = answerFirst;
    this.answerSecond = answerSecond;
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = 
    LayoutInflater.from(parent.getContext()).inflate(R.layout.test_items, 
    parent, false);
    return new MyViewHolder(v);
}

@Override
public void onBindViewHolder(final MyViewHolder holder, final int position) 
    {

        holder.firstanswer.setText(answerFirst.get(position).toString());
        holder.secondanswer.setText(answerSecond.get(position).toString());
    }

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

public class MyViewHolder extends RecyclerView.ViewHolder {
    TextView question;
    CheckBox firstanswer;
    CheckBox secondanswer;
    public MyViewHolder(View itemView) {
        super(itemView);
        question = (TextView) itemView.findViewById(R.id.question_text);
        firstanswer = (CheckBox) itemView.findViewById(R.id.first_answer);
        secondanswer = (CheckBox) itemView.findViewById(R.id.second_answer);
             }
        }
   }

这是主要活动

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

    final RecyclerView recyclerView = (RecyclerView) 
    findViewById(R.id.recyclerView_test);
    final LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getApplicationContext());
    recyclerView.setLayoutManager(linearLayoutManager); 

    final CustomAdapter customAdapter = new CustomAdapter(mainActivity.this, answerFirst,answerSecond);
    recyclerView.setAdapter(customAdapter);
}

Answer 1

您可以通过在主类中创建适配器类并在复选框的侦听器方法中滚动到所需位置来实现，因为 RecyclerView 是一个全局变量，您可以访问它并滚动到所需位置。

rv.scrollToPosition(youPositionInTheAdapter)

否则在构造函数中传递 RecyclerView 的实例并执行相同的操作

并通过以下方式获取适配器内的当前项目位置 getAdapterPosition()

或者你可以用这样的布局管理器来做

rv.getLayoutManager().scrollToPosition(youPositionInTheAdapter)