FYI, I combined Keremk’s answer with my original outline, cleaned-up the typos, generalized it to return an array of colors and got the whole thing to compile. Here is the result: + (NSArray*)getRGBAsFromImage:(UIImage*)image atX:(int)x andY:(int)y count:(int)count { NSMutableArray *result = [NSMutableArray arrayWithCapacity:count]; // First get the image into your data buffer CGImageRef imageRef = [image … Read more
Make sure you have the latest version of CocoaPods installed. $ pod update PODNAME was introduced recently. See this issue thread for more information: $ pod update When you run pod update SomePodName, CocoaPods will try to find an updated version of the pod SomePodName, without taking into account the version listed in Podfile.lock. It … Read more
Despite the “Unknown class MyClass in Interface Builder file.” error printed at runtime, this issue has nothing to do with Interface Builder, but rather with the linker, which is not linking a class because no code uses it directly. When the .nib data (compiled from the .xib) is loaded at runtime, MyClass is referenced using … Read more
Although Core Data is a descendant of Apple’s Enterprise Object Framework, an object-relational mapper (ORM) that was/is tightly tied to a relational backend, Core Data is not an ORM. It is, in fact, an object graph management framework. It manages a potentially very large graph of object instances, allowing an app to work with a … Read more
I reproduced your setup both with your data model and one of my own with different names. I got the same error in both cases. Looks like a bug in Apple’s autogenerated code.
The bounds of an UIView is the rectangle, expressed as a location (x,y) and size (width,height) relative to its own coordinate system (0,0). The frame of an UIView is the rectangle, expressed as a location (x,y) and size (width,height) relative to the superview it is contained within. So, imagine a view that has a size … Read more
A quick summary of the concepts: Hugging => content does not want to grow Compression Resistance => content does not want to shrink Example: Say you’ve got a button like this: [ Click Me ] and you’ve pinned the edges to a larger superview with priority 500. Then, if Hugging priority > 500 it’ll look … Read more