摘要：
1、创建数据库和升级数据库packageorg.jgw.service;importandroid.content.Context;importandroid.database.sqlite.SQLiteDatabase;importandroid.database.sqlite.SQLiteDatabase.CursorFactory;importandroid.database.sqlite.SQLiteOpenHelper;publicclassDBOpenHelperextendsSQLiteOpenHelper{publicDBOpenHelper(Contextcontext){s 阅读全文
