我有一个 RecyclerView，它在 CardViews 上加载 CheckBoxes。这是适配器。加载时很好。但是当我故意检查 RecyclerView 上的项目时，CheckBox 会在某个地方随机检查。我怎样才能摆脱这个问题？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:
            }
        }
    }
}

最佳答案

您的 onBindViewHolder() 方法有问题... RecyclerView 将在滚动期间重用 ViewHolder。因此，您应该为 ViewHolder 中的所有 View 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单选按钮的随机状态。

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);
}

关于Android RecyclerView Checkbox 随机勾选，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34235049/