From 4dd564dbdfb06b11fdd10262a2b0d07daaa667b4 Mon Sep 17 00:00:00 2001 From: pybple5kv <1766872402@qq.com> Date: Sun, 10 Jul 2022 22:21:58 +0800 Subject: [PATCH] ADD file via upload --- DBOpenHelper.java | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 DBOpenHelper.java diff --git a/DBOpenHelper.java b/DBOpenHelper.java new file mode 100644 index 0000000..67e657c --- /dev/null +++ b/DBOpenHelper.java @@ -0,0 +1,28 @@ +package com.example.activity.dbsql; + +import android.content.Context; +import android.database.sqlite.SQLiteDatabase; +import android.database.sqlite.SQLiteOpenHelper; + +import androidx.annotation.Nullable; + +public class DBOpenHelper extends SQLiteOpenHelper { + public DBOpenHelper(@Nullable Context context, @Nullable String name, @Nullable SQLiteDatabase.CursorFactory factory, int version) { + super(context, name, factory, version); + } + + @Override + public void onCreate(SQLiteDatabase db) { + //创建数据库sql语句并执行 + String sql="create table question(q_type varchar(10),q_id int ,answer varchar(200)," + + " questions varchar(500),OptionA varchar(500),OptionB varchar(500),OptionC varchar(500),OptionD varchar(500))"; + db.execSQL(sql); +/*q_type varchar(10),q_id int ,answer varchar(200),questions varchar(500),OptionA varchar(500),OptionB varchar(500),OptionC varchar(500),OptionD varchar(500) */ + } + + @Override + public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { + + } +} +