Android Recyclerview +RadioButton 单选列表的实现

设计图如下

由于Recyclerview的复用机制,RadioButton 选择会出现错误,实现的代码如下:主要是Adapter的实现(Adapter使用的BaseRecyclerViewAdapterHelper开源封装库),

public class ChineseMedicineAdapter extends BaseQuickAdapter<String,BaseViewHolder> {
    //用来记录每个选项单选结果,记录的结果是这样的{0=1,1=3,2=4.....}
    private SparseIntArray sia = new SparseIntArray();
    /*
    * 用于获取结果
    * */
    public SparseIntArray getSia() {
        return sia;
    }

    public ChineseMedicineAdapter(int layoutResId) {
        super(layoutResId);
    }

    @Override
    protected void convert(@NotNull BaseViewHolder baseViewHolder, String s) {
          RadioButton  rb1 = baseViewHolder.getView(R.id.rb_1);
        RadioButton  rb2 = baseViewHolder.getView(R.id.rb_2);
        RadioButton  rb3 = baseViewHolder.getView(R.id.rb_3);
        RadioButton  rb4 = baseViewHolder.getView(R.id.rb_4);
        RadioGroup rg = baseViewHolder.getView(R.id.item_rg);



        rb1.setOnCheckedChangeListener((buttonView, isChecked) -> {
            if (isChecked){
                sia.append(baseViewHolder.getAdapterPosition(),1);
            }
        });
        rb2.setOnCheckedChangeListener((buttonView, isChecked) -> {
            if (isChecked){

                sia.append(baseViewHolder.getAdapterPosition(),2);
            }
        });
        rb3.setOnCheckedChangeListener((buttonView, isChecked) -> {
            if (isChecked){
                sia.append(baseViewHolder.getAdapterPosition(),3);
            }

        });
        rb4.setOnCheckedChangeListener((buttonView, isChecked) -> {
            if (isChecked){
                sia.append(baseViewHolder.getAdapterPosition(),4);
            }
        });

        int i = sia.get(baseViewHolder.getAdapterPosition(),-1);
        switch (i){
            case 1:
                rb1.setChecked(true);
                break;
            case 2:
                rb2.setChecked(true);
                break;
            case 3:
                rb3.setChecked(true);
                break;
            case 4:
                rb4.setChecked(true);
                break;
            case -1:
                rg.clearCheck();
                break;
            default:
                break;
        }
    }








}

           

最后遍历SparseIntArray 即可

SparseIntArray sia = medicineAdapter.getSia();
            if (sia.size() < 30){
                //
                ToastUtils.showLong("请完成所有题目");
                return;
            }
            for (int i = 0; i < sia.size(); i++) {
                int key = sia.keyAt(i);
                int value = sia.get(key);
            }