Create UIColor from NSColor Data

Question

I have a CoreData Mac app for which I'm writing an iOS front end. All's working well thusfar, I'm able to successfully read files created with the Mac app in the iOS version. I'm struggling with how to read the NSColor data (being stored as an NSData object in my data model) into a UIColor in iOS version of the app.

To summarize: How do take an NSData object containing an archived NSColor object and convert it to the appropriate UIColor object on an iOS device?

Answer 1

What I've done thus far (and it works, but isn't pretty) is to read the NSData into an NSString (the data seems to be ASCII encoded). The RGB values are present in the NSString and with a little parsing can be extracted to create a new UIColor.

I'm not sure if this is a global solution or one that happens to work in my case, but it's a start.

It would obviously be better to serialize as an NSArray and I'll look into that for the future.

Answer 2

Take a look at the following from the Core Data Programming Guide

Have you tried replacing NSColor with UIColor? UIColor implements the NSCoding protocol

// - (NSColor *)color
- (UIColor *)color
{

    [self willAccessValueForKey:@"color"];

    // NSColor *color = [self primitiveColor];
    UIColor *color = [self primitiveColor];

    [self didAccessValueForKey:@"color"];

     if (color == nil)

    {

        NSData *colorData = [self colorData];

        if (colorData != nil)

        {

            color = [NSKeyedUnarchiver unarchiveObjectWithData:colorData];                

            [self setPrimitiveColor:color];

        }

    }

    return color;

}