更改 recyclerview 項中 textview 的值

Question

伙計們，我正在使用具有相同響應的多個 api 請求並將其顯示到回收視圖中，但在這些響應中，我得到一個 user_id 而不是用戶名，但我需要將用戶名顯示到 recyclerview 中，此圖像分解了我需要的內容做： https : //i.stack.imgur.com/IdQ6e.png

所以這是我的適配器類，我嘗試使用另一個 api 請求制作哈希圖，並使用 <user_id,user_name> 制作哈希圖，並嘗試在持有者類中使用它來顯示用戶名，但它不起作用：

public class FollowupAdapter extends RecyclerView.Adapter  {

Map<String, String> userMap1 = new HashMap<>();

private Context Context1 ;
private List<TraitementTicketModel> followuplist;




public FollowupAdapter(Context mContext, List<TraitementTicketModel> followuplist) {
    this.Context1 = mContext;
    this.followuplist = followuplist;


}

@Override
public int getItemViewType(int position) {
    if(followuplist.get(position).getTaskcategories_id()!=null) {
        return 3;
    }else if (followuplist.get(position).getSolutiontypes_id()!=null){
        return 2;

    }
    return 1;
}

@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    View view;
    LayoutInflater layoutInflater=LayoutInflater.from(Context1);
    if (viewType==1){
        view = layoutInflater.inflate(R.layout.followupitem, parent,false);
        return new ViewHolderFollowup(view);
    }else if (viewType==2){
        view = layoutInflater.inflate(R.layout.solutionitem, parent,false);
        return new ViewHolderSolution(view);
    }
    else
    view = layoutInflater.inflate(R.layout.taskitem, parent,false);
    return new ViewHolderTask(view);
}



@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
    displayusers();

    if(followuplist.get(position).getTaskcategories_id()!=null) {
        ViewHolderTask viewHolderTask = (ViewHolderTask) holder;
        viewHolderTask.users_id.setText(userMap1.get(followuplist.get(position).getUsers_id()));
        viewHolderTask.date.setText(followuplist.get(position).getDate());
        viewHolderTask.content.setText(html2text(followuplist.get(position).getContent()));

    }else if(followuplist.get(position).getSolutiontypes_id()!=null){
        ViewHolderSolution viewHolderSolution = (ViewHolderSolution) holder;
        viewHolderSolution.users_id.setText(userMap1.get(followuplist.get(position).getUsers_id()));
        viewHolderSolution.date.setText(followuplist.get(position).getDate());
        viewHolderSolution.content.setText(html2text(followuplist.get(position).getContent()));



    }
    else {
        ViewHolderFollowup viewHolderFollowup = (ViewHolderFollowup) holder;
        viewHolderFollowup.users_id.setText(userMap1.get(followuplist.get(position).getUsers_id()));
        viewHolderFollowup.content.setText(html2text(followuplist.get(position).getContent()));
        viewHolderFollowup.titre.setText(followuplist.get(position).getTitre());
        viewHolderFollowup.date.setText(followuplist.get(position).getDate());
    }


}

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


 public static class ViewHolderFollowup extends RecyclerView.ViewHolder{

    TextView users_id;
    TextView date;
    TextView content;
    TextView titre;


    public ViewHolderFollowup(@NonNull View itemView) {
        super(itemView);
        users_id=itemView.findViewById(R.id.user_id_followup);
        date =itemView.findViewById(R.id.date_followup);
        content=itemView.findViewById(R.id.contenu_followup);
        titre=itemView.findViewById(R.id.titre_followup);
    }

}
  public static class ViewHolderTask extends RecyclerView.ViewHolder {
    TextView users_id;
    TextView date;
    TextView content;



    public ViewHolderTask(@NonNull View itemView) {
        super(itemView);
        users_id=itemView.findViewById(R.id.user_id_task);
        date =itemView.findViewById(R.id.date_task);
        content=itemView.findViewById(R.id.contenu_task);

    }
}

public static class ViewHolderSolution extends RecyclerView.ViewHolder{
    TextView users_id;
    TextView date;
    TextView content;



    public ViewHolderSolution(@NonNull View itemView) {
        super(itemView);
        users_id=itemView.findViewById(R.id.user_id_solution);
        date =itemView.findViewById(R.id.date_solution);
        content=itemView.findViewById(R.id.contenu_solution);

    }

}

    public static String html2text(String html) {
    return Jsoup.parse(Jsoup.parse(html).text()).text();
}
public List addToList(List<TraitementTicketModel> list) {


    if(this.followuplist.addAll(list)){
        Sort(followuplist);
    }
    notifyDataSetChanged();


    return this.followuplist;
}
private List Sort (List<TraitementTicketModel> datalist){

    Collections.sort(datalist, new Comparator<TraitementTicketModel>() {
        @Override
        public int compare(TraitementTicketModel o1, TraitementTicketModel o2) {
            return o2.getDate().compareTo(o1.getDate());
        }
    });

    return datalist;
}
private void displayusers() {
    SharedPreferences sp =Context1.getApplicationContext().getSharedPreferences("tokenPref", Context.MODE_PRIVATE);
    String sestoken = sp.getString("token","");

    Retrofit retrofit= RetrofitInstance.getRetrofitInstance();
    final Api api= retrofit.create(Api.class);
    Call<List<User>> call = api.getUser(sestoken);
    call.enqueue(new Callback<List<User>>() {
        @Override
        public void onResponse(Call<List<User>> call, Response<List<User>> response) {

            if (response.code() != 200){
                Log.e("TAG", "onResponse: something is wrong"+response.code() );



            }
            List<User> users = response.body();





            for (User user : users) {
                if (userMap.get(user.getId()) == null)
                    userMap.put(user.getId(), user.getName());
            }






        }

        @Override
        public void onFailure(Call<List<User>> call, Throwable t) {


        }
    });

}

private Map<String, String> PutMap(HashMap<String, String> userMap) {


    userMap1=userMap;

    return userMap1;
}

}

我試過的這個哈希圖沒有工作，感謝任何解決方案或想法，我真的被困在這個問題上

Answer 1

您的適配器的工作是將數據模型調整為一系列視圖持有者，而不是轉換、組合、獲取、變異等來自不同來源的不同系列數據。

問問自己這個問題：如果你能“神奇地”調用一個像這個repository.getList()這樣的對象，它會返回一個List of Something並且Something有三個字段：

class Something {
   String id;
   String userName;
   String content;
   String type; //maybe useful for the Adapter to pick what type...
   ... anything else you need
}

所以你有一個List<Something>()可以傳遞給你的適配器，你的適配器會不會突然變得超級簡單？

這就是你需要做的； 刪除所有不屬於適配器的邏輯（我希望只有一個onCreateViewHolder onBindViewHolder getItemViewType ，就是這樣）。

您正在為您的適配器制造一個大問題，它已經承擔了許多其他責任。 此數據問題（將用戶 + id + 內容放在單個對象中）是您的數據源/存儲庫的問題，而不是回收器視圖的適配器。

在將數據傳遞給適配器之前轉換數據。 你的生活、你的開發伙伴以及你的未來，都會心存感激。