我们何时应在Android应用程序中使用db.close（）？

Question

If an activity uses a private SQLiteOpenHelper, calls .open() on it and uses the database; when should we call .close()?

Furthermore, what are the repercussions of not using .close() properly

Answer 1

open() sets a lock on the database, so that no other instance can use it. so close() is a necessity that you are done with using the database , This is to ensure there are no discrepancies in the data. think about another instance changing the data, that you are trying to access. so only 1 instance can be made for your db, which requires,proper locking and unlocking.