Question

I have a very simple application test in which I want to drag and drop files in a NSImageView object.

I can already get the list of files from this action, but now I want to store this data in an array to be accessed in the View using data bindings. The only code I have that works fine with data bindings, tough, has an array in AppDelegate that I access using an Array Controller. But then, my data is inside a class I created to the NSImageView called “DropView”, which extends “NSImageView” class and handles the drop action.

How can I pass the array information to make the bindings possible?

Any suggestion is welcome. Thanks!

Answer 1

I decided to use a singleton in a bigger project. In this smaller one I did like this:

1 – Add AppDelegate reference to the subclass (m file):

#import "AppDelegate.h"

2 – Call a method declared in the AppDelegate passing all the information needed like this:

[[NSApp delegate] doSomething:someInformation];

3 – Set all the information in the method used.

4 – Make the bindings in the interface.