2014/10/15 下午 10:15:04

iphone Programming Glossary: transformable

How can I encrypt CoreData contents on an iPhone

http://stackoverflow.com/questions/1645007/how-can-i-encrypt-coredata-contents-on-an-iphone

share improve this question You can encrypt individual properties in your Core Data model entities by making them transformable properties then creating an NSValueTransformer subclass which will encrypt and decrypt the data for that property. While..

Core Data - Storing Images (iPhone)

http://stackoverflow.com/questions/2090028/core-data-storing-images-iphone

to avoid performance issues. 1 mb store on disk and reference the path in your Core Data store. You can use the transformable data type to store the NSImage directly into Core Data. In fact you can use the transformable data type to store anything.. store. You can use the transformable data type to store the NSImage directly into Core Data. In fact you can use the transformable data type to store anything that implements the NSCoder protocol. Personally I would not convert it to a CGImageRef as you..

Core data images from desktop to iphone

http://stackoverflow.com/questions/2271195/core-data-images-from-desktop-to-iphone

with an iPhone application. I've recently added thumbnail which I added via an Image Well using simple bindings. Its a transformable data type which seems to work fine. The iPhone application however won't show the images. The attribute isn't null but I.. entity valueForKey @ thumbnail no error but no file return cell I'm thinking either the problem is with the transformable I'm using the default NSKeyedUnarchiveFromData or how I'm calling the thumbnail. I'm a newbie so any help would be greatly.. portable a PNG or JPG etc. Then you will be able to load it back into your iPhone application as a UIImage. Update re transformable Sounds like you are still passing in a NSImage to the attribute and it is thinking you are handling it data. You need to..

Core Data data model: attribute type for UIColor

http://stackoverflow.com/questions/2304882/core-data-data-model-attribute-type-for-uicolor

or what Thanks iphone objective c cocoa touch core data share improve this question What you probably want is a transformable attribute. Give the section on Non standard Persistent Attributes in the Core Data Programming Guide an other read. A transformable.. attribute. Give the section on Non standard Persistent Attributes in the Core Data Programming Guide an other read. A transformable attribute is underneath the covers a binary data attribute but Core Data will automatically use the NSValueTransformer of..

What can I do with an Transformable attribute type in Core Data on the iPhone?

http://stackoverflow.com/questions/3014498/what-can-i-do-with-an-transformable-attribute-type-in-core-data-on-the-iphone

How should I store UIImages within my Core Data database?

http://stackoverflow.com/questions/3908910/how-should-i-store-uiimages-within-my-core-data-database

Storing images within a Core Data database is pretty easy to do. You just need to mark your image attribute as a transformable one and create a subclass of NSValueTransformer. Within that subclass add code like the following Class transformedValueClass.. UIImage value id reverseTransformedValue id value return UIImage imageWithData NSData value For your transformable attribute specify this subclass's name as the Value Transformer Name. You can then create an NSManagedObject subclass for..

Storing NSAttributedString Core Data

http://stackoverflow.com/questions/4266226/storing-nsattributedstring-core-data

Core Data I am trying to store an NSAttributedString to a Core Data SQL store. I have the property set as a transformable it is optional and it is NOT transient or indexed and the value transformer name is set to default NSKeyedUnarchiveFromData.. person had done this but unfortunately did not share the code. All they said was the following In Core Data i have an transformable in the database and i us my own NSVauleTransformer. This is a subclass of NSValueTransformer and creates an attributed string..