ADD file via upload

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) {
+
+    }
+}
+