SQLiteDatabase.openDatabase vs SQLiteOpenHelper.getReadableDatabase
Is there any difference between these two methods? Both return an opened SQLiteDatabase. Both can create a database if one doesn't exist. SQLiteOpenHelper also has getWriteableDatabase when read/write is needed...
Which method should I use and where? Based on sample code I've seen, I'm using SQLiteOpenHelper to create my database in the first place, but then calling SQLiteDatabase.openDatabase when I need to use the database.
openDatabase()更灵活，可以指定语言环境等，但对于大多数情况下，您不需要明确提供Android文档所说的使用getReadableDatabase()和getWriteableDatabase() 。
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