Java Development

[matmaas]

I have made a application that stores information in flash-memory. Is it possible to backup the BB flash-memory. Because if I install an update of the device software the flash-memory is wiped-out and I lose my information.

[sdgardne · Accepted solution]

Hi there!

While I'm not a developer (they all hang out in another section of these forums -- http://supportforums.blackberry.com/rim/?category.id=BlackBerryDevelopment), I would think that your application would need to perform the backup of it's volitile data to either Device Memory or to the Media Card. I am pretty sure it is possible -- BBMessenger allows the backup of the BBM contacts to the Media Card -- I've simply no idea how to accomplish it, but I am pretty sure that it's a function of the application to perform the backup of it's own data from this memory area.

Cheers!

[Xandrex]

when you create a complete backup of your device using Desktop Manager, you can backup the content of the device memory (including your application data).

but the best way is to allow the user to choose the storage location, for example on the media card as sdgardne was advising you.

[matmaas]

I have tried this (full backup) but the data of my application were gone. Even so I had to enter again the initial unlock-code of the application.

Is there a way to see (like in a windows explorer) what data/files ar in flash-memory?

[MSohm]

Your application needs to implement the synchronization APIs in order for its data to be backed up and restored through Desktop Manager or a BlackBerry Enterprise Server.  Have a look at the link below and the otabackuprestoredemo sample included with the BlackBerry JDE.  The developer knowledge base article is suitable for a small amount of data (such as configuration information).  The sample within the BlackBerry JDE can be used for larger data sets.

How To - Backup and restore small amounts of data using SyncItem
Article Number: DB-00092

http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/800625/How_To_...