package com.example.helloworld;

import android.content.Context;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteOpenHelper;

import android.widget.Toast;

import androidx.annotation.Nullable;

public class MyDBHelper extends SQLiteOpenHelper {

    private Context context;

    public MyDBHelper(Context context,String name,int version) {

        super(context, name, null, version);

        this.context=context;

    }

    @Override

    public void onCreate(SQLiteDatabase db) {

        String sql="create table personwendu(id integer primary key autoincrement, address varchar, name varchar, wendu varchar, dateandtime varchar)";

        db.execSQL(sql);

        Toast.makeText(context,"数据加入成",Toast.LENGTH_LONG).show();

    }

    @Override

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

    }

}