相关疑难解决方法(0)

我知道这已经被问过几次了，但是在所有这些问题中，OP和回答者都没有提供清晰的例子。

所以我想问的是是否有这样的课程

public class MyDatabaseDB {

    // database constants
    public static final String DB_NAME = "mydatabase.db";
    public static final int    DB_VERSION = 1;

    // list table constants
    public static final String LIST_TABLE = "list";

    public static final String LIST_ID = "_id";
    public static final int    LIST_ID_COL = 0;

    public static final String LIST_NAME = "list_name";
    public static final int    LIST_NAME_COL = 1;

    // task table constants
    public static final String TASK_TABLE = "task";

    public static final String TASK_ID = "_id"; …