RecycerView中的单个选择

Question

我知道RecycerView类中没有默认的选择方法，但我尝试了以下方法，

public void onBindViewHolder(ViewHolder holder, final int position) {
    holder.mTextView.setText(fonts.get(position).getName());
    holder.checkBox.setChecked(fonts.get(position).isSelected());

    holder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if(isChecked) {
                for (int i = 0; i < fonts.size(); i++) {
                    fonts.get(i).setSelected(false);
                }
                fonts.get(position).setSelected(isChecked);
            }
        }
    });
}

在尝试这段代码时，我得到了预期的输出，但完全不是。

我将用图像来解释这一点。

我如何克服这个问题？有时，如果我快速滚动列表，就会选择其他项目。如何克服这个问题呢？

更新

当我试图在fonts.get（position）.setselected（isChecked）；之后使用notifydatasetchanged()时，

java.lang.IllegalStateException: Cannot call this method while RecyclerView is computing a layout or scrolling
        at android.support.v7.widget.RecyclerView.assertNotInLayoutOrScroll(RecyclerView.java:1462)
        at android.support.v7.widget.RecyclerView$RecyclerViewDataObserver.onChanged(RecyclerView.java:2982)
        at android.support.v7.widget.RecyclerView$AdapterDataObservable.notifyChanged(RecyclerView.java:7493)
        at android.support.v7.widget.RecyclerView$Adapter.notifyDataSetChanged(RecyclerView.java:4338)
        at com.app.myapp.screens.RecycleAdapter.onRowSelect(RecycleAdapter.java:111)

Answer 1

问题的解决方案：

public class yourRecyclerViewAdapter extends RecyclerView.Adapter<yourRecyclerViewAdapter.yourViewHolder> {

private static CheckBox lastChecked = null;
private static int lastCheckedPos = 0;


public void onBindViewHolder(ViewHolder holder, final int position) {

    holder.mTextView.setText(fonts.get(position).getName());
    holder.checkBox.setChecked(fonts.get(position).isSelected());
    holder.checkBox.setTag(new Integer(position));

    //for default check in first item
    if(position == 0 && fonts.get(0).isSelected() && holder.checkBox.isChecked())
    {
       lastChecked = holder.checkBox;
       lastCheckedPos = 0;
    }

    holder.checkBox.setOnClickListener(new View.OnClickListener() 
    {
        @Override
        public void onClick(View v) 
        {
           CheckBox cb = (CheckBox)v;
           int clickedPos = ((Integer)cb.getTag()).intValue(); 

           if(cb.isChecked())
           {
              if(lastChecked != null)
              {
                  lastChecked.setChecked(false);
                  fonts.get(lastCheckedPos).setSelected(false);
              }                       

              lastChecked = cb;
              lastCheckedPos = clickedPos;
          }
          else
             lastChecked = null;

          fonts.get(clickedPos).setSelected(cb.isChecked);
       }
   });
}
}

希望这能帮上忙！