室數據庫架構的實體在使用時遇到的下列實體機器人室延伸錯誤

Question

。但現在我希望我的POJO（Call.class）到一個抽象類擴展如下：

@Entity 
public class Call extends BaseViewTypeData implements Parcelable { 
.... 
.... 
} 

而且我發現了以下錯誤：

Error:Cannot figure out how to save this field into database. You can 
consider adding a type converter for it. 
Error:Cannot find getter for field. 
Error:Cannot find setter for field. 
Error:Cannot figure out how to read this field from a cursor. 
Error:Cannot find getter for field. 
Error:Cannot find setter for field. 

父（BaseViewTypeData.class）是一個簡單的類來處理回收視圖中的多個視圖類型。

public abstract class BaseViewTypeData extends BaseObservable { 

public static final int VIEW_TYPE_CALL = 0; 
public static final int VIEW_TYPE_SETTINGS_HEADER = 1; 
public static final int VIEW_TYPE_SETTINGS_TITLE_SUBTITLE = 2; 
public static final int VIEW_TYPE_SETTINGS_TITLE_SUBTITLE_SWITCH = 3; 
public static final int VIEW_TYPE_SETTINGS_DIVIDER = 4; 
public static final int VIEW_TYPE_SETTINGS_TITLE_SWITCH = 5; 
public static final int VIEW_TYPE_CALL_LOG_DATA = 6; 
public static final int VIEW_TYPE_CHECKBOX_TITLE_SUBTITLE = 7; 

@Ignore 
public abstract int getViewType(); 

} 

Answer 1

The parent (BaseViewTypeData.class) is a simple class to handle multiple view types in a recycler views.

我懷疑你的問題不在於BaseViewTypeData，但BaseObservable，因爲房間不知道如何處理the BaseObservable fields。

通常，讓您的實體從您不控制的類繼承是不太可能的。