Image Wells, Core Data, and Sqlite files.

Posted by Sway on Stack Overflow See other posts from Stack Overflow or by Sway
Published on 2009-10-07T03:41:26Z Indexed on 2010/03/26 21:13 UTC
Read the original article Hit count: 388

Filed under:

core-data

|

image

|

sqlite

|

filesize

I've got a mac application that I've developed.

I use it to create sqlite files that are bundled with my iphone app. The mac app uses Core Data and bindings and is working fine except for one "weird" issue.

I use an NSImageView (or Image Well) to allow me to drag and drop jpg files.

This is bound through to an optional binary attribute in my model class.

For some reason when I drag and drop a 4k jpg file it onto the image well and save the sqlite file. The data saved to the binary column is over 15 times larger than it should be.

Whereas if I use an application like SQLiteManager and add the image into the row in the database. The binary data is the correct (expected size).

File 4k jpg Actual size: 2371. Persisted via Core Data size: 35810.

Can anyone give me a suggestion as to why this might be happening?

Do I need to set some setting in Interface Builder or write some custom code?

© Stack Overflow or respective owner

Related posts about core-data

Records not being saved to core data sqlite file

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm a complete newbie when it comes to iOS programming and much less Core Data. It's rather non-intuitive for me, as I really came into my own with programming with MATLAB, which I guess is more of a 'scripting' language. At any rate, my problem is that I had no idea what I had to do to create a… >>> More
iPhone - Core Data crash on migration

as seen on Stack Overflow - Search for 'Stack Overflow'
I have problems, when i install app from Xcode all works but if I build app and install it from iTunes I have an error with the database at launch. This happens only than i have changes in the core data model and need to migrate to a new version. At first launch at crashes with message: Thread 0: 0… >>> More
CoreData update problems

as seen on Stack Overflow - Search for 'Stack Overflow'
My app makes updates in background thread then saves context changes. And in main context there is a table view that works with NSFetchedResultsController. For some time updates work correctly, but then exception is thrown. To check this I've added NSLog(@"%@", [self.controller fetchedObjects]); to… >>> More
Core Data managed object context thread synchronisation

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm have an issue where i'm updating a many-to-many relationship in a background thread, which works fine in that threa, but when I send the object back to the main thread the changes do not show. If I close the app and reopen the data is saved fine and the changes show on the main thread. Also using… >>> More
UITableView Core Data reordering

as seen on Stack Overflow - Search for 'Stack Overflow'
I know this question has been asked before, and I took a look at the answer to this question. However, I'm still confused as to how to implement reordering with a UITableView in a Core Data project. What I know is that I need to have a "displayOrder" attribute in my Entity to track the order of items… >>> More

Related posts about image

Image anotation (Highlighting parts of an image, Scrubbing an image) using Javascript

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, We are working on an application and would like users to annotate an image. By annotation I mean, the ability to highlight parts of an image. Once the image is highlighted, and submit is clicked, the highlighted attributes (color, area highlighted) are submitted to the server to be stored in… >>> More
How I can add JScroll bar to NavigableImagePanel which is an Image panel with an small navigation vi

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have the following NavigableImagePanel, it is under BSD license and I found it in the web. What I want to do with this panel is as follow: I want to add a JScrollPane to it in order to show images in their full size and let the users to re-center the image using the small navigation panel… >>> More
Twitter Bootstrap styling conflicts with plug-ins like jqGrid and other third part libraries

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
Issues:The concern is that the Twitter Bootstrap framework is that some of their css selectors are simply too generic and have incompatibility issues and conflicts with most third party plug-ins and css libraries, like jQuery-UI and jqGrid.My most pressing concern is only with the generic selector… >>> More
PHP invalid image's and error handling

as seen on Stack Overflow - Search for 'Stack Overflow'
Using PHP's Image and GD functions you can use the following method to finally output the php image imagepng($image); Sometimes, for whatever reason the image may not be displayed typically the error is not with the image but with the actual php functions not executing successfully. However this… >>> More
apt-get install was interrupted

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am new to Ubuntu. I got the following lines after an interrupted apt-get install. Running depmod. update-initramfs: deferring update (hook will be called later) Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.13.0-29-generic /boot/vmlinuz-3.13.0-29-generic run-parts:… >>> More