现在要实现如下图功能（单选，选中任何一个没其他的全部要重置，看似checkbox，实则radiobutton，UI设计出来的，别问我radiobutton与checkbox有什么区别，我已经跟他们讲了~~~~）：

image.png

遇到的问题：
1、java.lang.IllegalStateException: Cannot call this method while RecyclerView is computing a layout or scrolling不能在RecyclerView计算layout或者滑动的时候使用 notifyDataSetChanged() 方法
尝试的方法：将notifyDataSetChanged()放到点击事件回调的单独UI线程里，但是也没用，会导致错乱，而且有时候点击会闪一下
解决方法：通过标志位来告诉layout是否当前还在计算计算layout
2、出现滑动的时候radiobutton选中错乱，明明选中了一个，但是在滑动的时候却显示在其他上面

适配器代码如下：

    public class GiftAdapter extends SimpleRecAdapter<GiftModel, GiftAdapter.viewHolder> {

private static int TAG_VIEW = 0;
private String TAG = "GiftAdapter";
private HashMap<Integer, Boolean> states = new HashMap<>();
private boolean isBind;
public GiftAdapter(Context context) {
    super(context);
}

@Override
public viewHolder newViewHolder(View itemView) {
    return new viewHolder(itemView);
}

@Override
public int getLayoutId() {
    return R.layout.item_gift;
}

@Override
public void setData(List<GiftModel> data) {
    super.setData(data);
    clearState();
}

@Override
public void onBindViewHolder(final viewHolder holder, final int position) {
    final GiftModel giftModel = data.get(position);
    isBind = true;
    holder.tvGiftTitle.setText((position + 1) + "." + giftModel.getTitle());
    holder.radioGift.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if (isChecked) {
                clearState();
                setCheckedState(position);
                if (getRecItemClick() != null) {
                    getRecItemClick().onItemClick(position, giftModel, TAG_VIEW, holder);
                }
                if(!isBind){ //标识位
                    notifyDataSetChanged();
                }
            }
        }
    });
            //注意setChecked与setOnCheckedChangeListener的顺序，同样会导致错乱
    holder.radioGift.setChecked(states.get(position));
    isBind = false;
}

private void clearState() {
    for (int i = 0; i < getItemCount(); i++) {
        states.put(i, false);
    }
}

private void setCheckedState(int position) {
    states.put(position, true);
}

public class viewHolder extends RecyclerView.ViewHolder {
    @BindView(R.id.tv_gift_title)
    TextView tvGiftTitle;
    @BindView(R.id.radio_gift)
    RadioButton radioGift;

    public viewHolder(View itemView) {
        super(itemView);
        KnifeKit.bind(this, itemView);
    }
}
}

布局文件：R.layout.item_gift

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/ll_main_nav"
android:layout_width="match_parent"
android:layout_height="@dimen/list_line_normal_40"
android:gravity="center_vertical"
android:orientation="horizontal">
<TextView
    android:id="@+id/tv_gift_title"
    android:layout_width="0dp"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:gravity="center_vertical"
    android:maxLines="1"
    android:textColor="@color/white"
    android:ellipsize="end"
    android:text="这是礼品"/>
<RadioButton
    android:id="@+id/radio_gift"
    android:layout_width="@dimen/image_line_smaller"
    android:layout_height="@dimen/image_line_smaller"
    android:button="@drawable/custom_radio"
    android:layout_marginLeft="@dimen/margin_largger"/>
</LinearLayout>