Android RecyclerView Checkbox随机检查

Question

我有一个recyclerview，它在cardviews上加载复选框。这是适配器。加载时很好。但是，当我故意在recyclerview上检查某个项目时，会在某个随机位置选中一个复选框。我如何摆脱这个问题？这是我的适配器。提前致谢。

public class QuestionsAdapter extends RecyclerView.Adapter<QuestionsAdapter.QuestionsViewHolder> {
List<QuestionModel> Questions;
public Context context;

public QuestionsAdapter(Context context, List<QuestionModel> questions) {
    this.Questions = questions;
    this.context = context;
}

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

@Override
public void onBindViewHolder(QuestionsViewHolder holder, final int position) {
    holder.txtQuestionText.setText(Questions.get(position).QuestionText);

}

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

}

@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
    super.onAttachedToRecyclerView(recyclerView);

}

public class QuestionsViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    public RadioButton rbLike;
    public RadioButton rbdisLike;
    public RadioButton rbnoComment;
    public TextView txtQuestionText;

    public QuestionsViewHolder(View itemView) {
        super(itemView);
        rbLike = (RadioButton) itemView.findViewById(R.id.like);
        rbdisLike = (RadioButton) itemView.findViewById(R.id.Dislike);
        txtQuestionText = (TextView) itemView.findViewById(R.id.txtCardQuestion);
        rbnoComment = (RadioButton) itemView.findViewById(R.id.NoComment);
        rbnoComment.setOnClickListener(this);
        rbdisLike.setOnClickListener(this);
        rbLike.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.like:
                rbLike.setChecked(true);
                rbnoComment.setChecked(false);
                rbdisLike.setChecked(false);

                break;
            case R.id.Dislike:
                rbdisLike.setChecked(true);
                rbnoComment.setChecked(false);
                rbLike.setChecked(false);
                break;
            case R.id.NoComment:
                rbnoComment.setChecked(true);
                rbLike.setChecked(false);
                rbdisLike.setChecked(false);
                //do something
                break;

            default:
        }
    }

}

}

Answer 1

您的 onBindViewHolder() 方法存在问题... RecyclerView 将在滚动期间重用 ViewHolders。因此，您应该为 ViewHolder 中的所有视图设置状态以查看一致的数据。现在您只为“txtQuestionText”设置文本。在这种情况下，您将看到列表项的一致文本和 RadioButton 的随机状态。

简而言之，你应该有这样的东西：

@Override
public void onBindViewHolder(QuestionsViewHolder holder, final int position) {
    holder.setModel(Questions.get(position));
}

...

public class QuestionsViewHolder ...
...
public void setModel(QuestionModel model){
    rbLike.setChecked(model.like);
    rbdisLike.setChecked(model.dislike);
    rbnoComment.setChecked(model.comment);
    txtQuestionText.setText(model.text);
}