我可以更改 customArray 中的项目吗

Question

您好，我想修改自定义 ArrayList 中的一些数据

我的自定义数组

public class Item_GetMembers {

    String userid,username,gender,admin,ban,type;

    public Item_GetMembers(String userid, String username, String gender, String admin, String ban, String type) {
        this.userid = userid;
        this.username = username;
        this.gender = gender;
        this.admin = admin;
        this.ban = ban;
        this.type = type;
    }
}

我想将禁令从 0 修改为 1 职位 3 我可以从同一页面进行吗？

我的适配器

 public class Adapter_GetMembers extends RecyclerView.Adapter<Adapter_GetMembers.AdapterHolder>{

        ArrayList<Item_GetMembers> CategoriesList;
        Context context;

        public Adapter_GetMembers(Context context , ArrayList<Item_GetMembers> categories) {
            this.context = context;
            CategoriesList = categories;
        }

        @Override
        public AdapterHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_getmembers,parent,false);
            AdapterHolder adapterHolder = new AdapterHolder(v);

            return adapterHolder;
        }

        @Override
        public void onBindViewHolder(final AdapterHolder holder, final int position) {
            final Item_GetMembers item_getMembers = CategoriesList.get(position);
item_getMembers.ban.get(3,1); //but wrong why??

        }

        @Override
        public int getItemCount() {
            return CategoriesList.size();
        }

        class AdapterHolder extends RecyclerView.ViewHolder
        {

            public AdapterHolder(View itemView) {
                super(itemView);

            }
        }

}

我可以在其中编辑数据吗？我尝试了很多修改它，但它没有工作 , 先谢谢了

Answer 1

试试这个

@Override
public void onBindViewHolder(final AdapterHolder holder, final int position) {
    final Item_GetMembers item_getMembers = CategoriesList.get(position);
    //It means if your position is zero then zero position item will move at third position
    if(position == 0)
       moveItem(3, item_getMembers);

}

private void moveItem(int toItemPos, Item_GetMembers item)
{
   for(int i = 0; i < CategoriesList.size(); i++){
        if(toItemPos == i){
            CategoriesList.add(i, item)
            break;              
        }
   }
   notifyDataSetChanged();
}