The next task is to go back to the XCode IDE and add some member variables, properties, and methods to the view controller class definition as in Listing 5.

下一个任务是回到XCodeIDE，向视图控制器类定义添加一些成员变量、属性和方法，如清单5所示。

youdao

You can add a member variable from the Dialog editor in Resource View, or from Class View.

您可以从资源检视内的对话方块编辑器，或者从类别检视加入成员变数。

youdao

For an entity class, at least one member must have this attribute and should be mapped to the primary key or a unique key in the corresponding table or view.

对于实体类，必须至少有一个成员具有此特性，并应映射到相应表或视图中的主键或唯一键。

youdao

For an entity class, at least one member must have this attribute and should be mapped to the primary key or a unique key in the corresponding table or view.

对于实体类，必须至少有一个成员具有此特性，并应映射到相应表或视图中的主键或唯一键。

youdao