安卓开发里调用数据库，创建数据表，增删改查数据库的一个例子。实现的功能是注册一个用户，然后登陆，创建多个角色名，对角色进行增删改查。-Android developers to call database, create data tables, database CRUD an example. The function is to register a user, and then landing, create multiple role name, for roles CRUD.

Android手机SQLite数据库的登陆程序，包含了成员的增加、删除、查找等功能。-Android phones SQL database login procedures, including an increase in membership, delete, search and other functions.