How to check if a Sqlite database exists in android?

Question

我在将ORMLite与android结合使用时还很陌生，并且在这个问题中我读到，当数据库已经存在时，不会调用类OrmLiteSqliteOpenHelper onCreate()方法。但是我想OrmLiteSqliteOpenHelper确认一下，有人吗？知道如何检查数据库是否存在？

Answer 1

It looks like OrmLiteSqliteOpenHelper inherits the getWritableDatabase() method from SQLiteOpenHelper . If that method returns null, then the database does not exist.

Answer 2

You can also create a database by using SQLiteDatabase for example

SQLiteDatabase = StackOverFlowDB;
//Creating database
    StackOverFlowDB = MainActivity.this.openOrCreateDatabase("StackOverFlow", MODE_PRIVATE, null);