OpenHelper

package com.example.ggq.gaoguoqing2018072403.db;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.support.annotation.Nullable;

public class ShopOpenHelper extends SQLiteOpenHelper {
    private static final String DB_NAME = "shop.db";
    private static final int DB_VERSION = 1;

    public ShopOpenHelper(@Nullable Context context) {
        super(context, DB_NAME, null, DB_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL("create table shop(_id Integer primary key autoincrement,url Varchar(200),json TEXT)");
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

    }
}