UIAlertAction subclass with support for ReactiveCocoa.

iOS 8 introduced UIAlertController, an abstraction above and replacement for UIAlertView. UIAlertController uses UIAlertAction instances to represent buttons (and actions for those buttons). But the interface doesn't lend itself to naturally fit in the ReactiveCocoa world

Instead, we need to subclass it to ensure that certain things are set at initialization time. That's what this library does.

Installation is easy via CocoaPods. In your Podfile:

pod 'RACAlertAction'

If you want a specific version of ReactiveCocoa, specify it on a separate line. pod install, then import the library via #import <RACAlertAction/RACAlertAction.h> or @import RACAlertAction; if you're using frameworks.

Usage is pretty straightforward.

UIAlertController *alertController = ... // Set up your controller as you would normally.

// Create, then add the action
RACAlertAction *alertAction = [RACAlertAction actionWithTitle:/* your title */ style:/* whatever style */];
[alertController addAction:alertAction];

alertAction.command = ... // Whatever RACCommand that represents your unit of work.

The action's enabled property will be automatically bound to the enabled signal of its rac_command.