创建数据库（user）

package com.example.zhangyifan1507a0728;import android.content.Context;import android.database.sqlite.SQLiteDatabase;import android.database.sqlite.SQLiteDatabase.CursorFactory;import android.database.sqlite.SQLiteOpenHelper;public class Shujuku extends SQLiteOpenHelper {    public Shujuku(Context context) {        //创建数据库        super(context, "user", null, 1);        // TODO Auto-generated constructor stub    }    @Override    public void onCreate(SQLiteDatabase db) {        // TODO Auto-generated method stub        //创建表        db.execSQL("create table user(_id integer primary key autoincrement,brand text ,name text,price text)");    }    @Override    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {        // TODO Auto-generated method stub    }}