What's probably happening is that you are not closing the old database
file, so the application continues to read from it, and not from the new
one.
This is entirely possible on Linux (and other Unixes): deleting an open
file is allowed, the applications don't notice, and the actual file data
is deallocated when it's finally closed (gracefully or not).
You can see the code here, all it does it deletes the file, there is no
magic code to handle you switching the database underneath:
http://www.google.com/codesearch#oOy_5JrVRNM/trunk/frameworks/base/core/java/android/app/ApplicationContext.java&q=deleteDatabase%20package:android%20lang:%5Ejava$&type=cs&l=479
An ugly hack of a solution would be to terminate your application's
process (and immediately restart it), so the new process can open the
new database file.
A possibly complicated solution would be to close the old database file
using SQLiteOpenHelper.close, and then open the new one.
As for me, I would do this: keep the existing database open, and run an
intelligent merge with the new data.
-- Kostya
07.08.2011 16:04, CocoRambo ?????:
Hi,
For a new application I try to make weekly data update by downloading
directly an SQLite file generated in PHP.
So when update is needed I:
* Download the new SQLite file in ZIP (mydb.zip)
* Extract to a temporary file (mydb.db)
* Delete the old one (application.db via
deleteDatabase("application.db"))
* Put the new one instead (mydb.db becomes application.db)
But when I go back to any of my listviews, data still come from the
old SQLite file.
I tried to only delete old SQLite file (All it's ok and I can check
thah the file is really deleted via DDMS)
but my listviews data are still present...
Each of my ListFragment uses CursorLoader + Custom adapter that
extends CursorAdapter
It seems that loader is (re)created each time the fragment is created
so I don't think the problem is from this side...
Does anyone have same experience with SQLite database use?
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