On Mar 21, 2009, at 3:41PM, Walker Argendeli wrote:
I'm using Core Data, and I have an entity; we'll call it "Item". It has an attribute called "priority". In the xib, I have an NSLevelIndicator and NSStepper. I have a NSTableView full of "Items". Depending on which item is selected in the table view, I want the level indicator and stepper to display the right values, and for me to be able to set them to a certain value for each item. There are 2 problems: If I bind the value of either one to Item.arrangedObjects.priority, the app throws an exception, whereas if I bind to Item.selection.priority, the controls don't set each item's priority individually. What should I bind to? Secondly, an NSLevelIndicator wants a float for its value, whereas an NSStepper wants a double for its value. Which should I set it to in the core data model?
Cocoa Programming for Mac OS X Third Edition by Arron Hillegass Chapter 11, Basic Core Data, pages 171-182 has a NSLevelIndicator. This chapter might shed some light on your problem.
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