解决checkbox在ListView中的选中错乱问题

public class Myadapter extends BaseAdapter{
private Context context;
    private List<String> list;
    private Map<Integer,Boolean> map= new HashMap<>();


    public Myadapter(Context context, List<String> list) {
this.context = context;
        this.list = list;
    }

@Override
    public int getCount() {
return list.size();
    }

@Override
    public Object getItem(int i) {
return list.get(i);
    }

@Override
    public long getItemId(int i) {
return i;
    }

@Override
    public View getView(final int i, View view, ViewGroup viewGroup) {
        view= LayoutInflater.from(context).inflate(R.layout.item,null);
        CheckBox cb = view.findViewById(R.id.cb);
        cb.setText(list.get(i));
        //获取点击事件
        cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
//如果等于true就是选中
                if(b==true){
//把状态保存到Map集合中
                    map.put(i,true);
                }else{
//反之移除
                    map.remove(i);
                }
            }
        });
        //判断如果map集合不为空并且key值有状态就让对应的key值显示状态
        if(map!=null&&map.containsKey(i)){
            cb.setChecked(true);
        }else{
//反之不显示
            cb.setChecked(false);
        }
return view;
    }
}