Java 无法从firebase数据库android、回收器视图检索数据

模型类代码

public class DeleteEditEventsModel
{
    private String title, description, date, time, venue;

    DeleteEditEventsModel() { }

    public DeleteEditEventsModel(String title, String description, String date, String time, String venue) {
        this.title = title;
        this.description = description;
        this.date = date;
        this.time = time;
        this.venue = venue;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getDate() {
        return date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public String getTime() {
        return time;
    }

    public void setTime(String time) {
        this.time = time;
    }

    public String getVenue() {
        return venue;
    }

    public void setVenue(String venue) {
        this.venue = venue;
    }
}

这门课有什么问题吗

适配器类代码：

public class DeleteEditEventsAdapter extends FirebaseRecyclerAdapter<DeleteEditEventsModel, DeleteEditEventsAdapter.myViewHolder> {

    public DeleteEditEventsAdapter(@NonNull FirebaseRecyclerOptions<DeleteEditEventsModel> options) {
        super(options);
    }

    @Override
    protected void onBindViewHolder(@NonNull final myViewHolder holder, final int position, @NonNull final DeleteEditEventsModel model) {

        holder.title.setText(model.getTitle());
        holder.description.setText(model.getDescription());
        holder.date.setText(model.getDate());
        holder.time.setText(model.getTime());
        holder.venue.setText(model.getVenue());


        holder.delete_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                FirebaseDatabase.getInstance().getReference().child("Events")
                        .child(getRef(position).getKey()).removeValue();
            }
        });
    }

    @NonNull
    @Override
    public myViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_delete_events, parent, false);
        return new myViewHolder(view);
    }

    class myViewHolder extends RecyclerView.ViewHolder {

        TextView title, description, date, time, venue, edit_btn, delete_btn;


        public myViewHolder(@NonNull View itemView) {
            super(itemView);

            title = (TextView) itemView.findViewById(R.id.delete_event_Title);
            description = (TextView) itemView.findViewById(R.id.delete_event_Description);
            date = (TextView) itemView.findViewById(R.id.delete_event_Date);
            time = (TextView) itemView.findViewById(R.id.delete_event_Time);
            venue = (TextView) itemView.findViewById(R.id.delete_event_Venue);
            edit_btn = (TextView) itemView.findViewById(R.id.delete_event_edit_btn_tv);
            delete_btn = (TextView) itemView.findViewById(R.id.delete_event_btn_TV);
        }
    }

}

我想我的模型班有个问题

---

我第二次使用recycler视图，但我已将我的代码与以前的代码进行了对比检查，结果完全相同（我已验证），但无法理解此处的问题。

当您尝试将实时数据库中的节点映射到“DeleteEditEventsModel”类型的对象时，类中存在的字段名称必须与数据库中存在的属性名称匹配。不幸的是，在您的情况下，字段不匹配。请参见，数据库中的字段以“Event”开头，而在类中则不是，这是不正确的

要解决这个问题，您有两个选择，要么更改数据库中属性的名称以匹配类中的名称，要么在getter前面使用注释。例如，如果您有一个名为“date”的字段，并且数据库中的属性名为“EventDate”，那么getter应该如下所示：

@PropertyName("EventDate")
public String getDate() {
    return date;
}

---

通过这种方式，您告诉编译器查找名为“EventDate”而不是“date”的属性。

请编辑您的问题以显示数据库中

/Events

处的数据（作为文本，请不要截图）。您可以通过单击溢出菜单中的“导出JSON”链接来实现这一点(⠇) 请编辑您的问题，并添加弗兰克·范·帕夫伦要求的内容，同时请用@回答。@AlexMamo编辑了问题

{
  "CSE Notification" : {
    "cse notification" : "Computer Science and Engineering"
  },
  "Central Notification" : {
    "central notification" : "Inn-sha-ALLAH we'll be doing"
  },
  "Civil Notification" : {
    "civil notification" : "civil"
  },
  "ECE Notification" : {
    "ece notification" : "ece"
  },
  "EEE Notification" : {
    "eee notification" : "eee"
  },
  "Events" : {
    "21:00" : {
      "EventDate" : "08/05/21",
      "EventDescription" : "laptops",
      "EventTime" : "21:00",
      "EventTitle" : "Lenovo",
      "EventVenue" : "Hyderabad"
    },
    "5:16" : {
      "EventDate" : "17/05/21",
      "EventDescription" : "To retrieve",
      "EventTime" : "5:16",
      "EventTitle" : "Trying",
      "EventVenue" : "Hyderabad"
    }
  },
  "Examination_Branch_Notification" : {
    "em_noti" : "AstagfiruILLAH"
  },
  "IT Notification" : {
    "it notification" : "Information Technology"
  },
  "MBA Notification" : {
    "mba notification" : "mba"
  },
  "MECH Notification" : {
    "mech notification" : "MECH"
  },
  "M_TECH_Notification" : {
    "mTech" : "Master of Technology"
  }
}

@PropertyName("EventDate")
public String getDate() {
    return date;
}