SKObserver

Every iOS dev makes a KVO wrapper at some point, here's mine.
SKObserver is an NSObject category that provides a cleaner block based syntax for observing key value changes.

Setup

Simply drag and drop the NSObject+SKObserver files into your project and `#import "NSObject+SKObserver.h"` and you're 💯.

Implementation

To start observing changes to an object, call the method `sk_addObserverForKeyPath:withBlock:` on your object as follows. The block will return a dictionary containing the changes on the object. ``` [object sk_addObserverForKeyPath:@"keyPath" withBlock:^(NSDictionary *change) { NSLog(@"Change %@", change); }]; ```

To stop all observers from listening to changes on the object

[object sk_removeAllObservers];

In addition, to remove a specfic observer on the object

id observer = [object sk_addObserverForKeyPath:@"keyPath" withBlock:^(NSDictionary <NSKeyValueChangeKey, id>  *change)
{
   NSLog(@"Change %@", change);
}];
//when done observing
[object sk_removeObserver:observer];

And that's it! No more long and messy 'observeValueForKeyPath' methods.

Community

If you found an issue or would like to improve SKObserver feel free to raise an issue/submit a PR. You can also reach out to me on Twitter @_sachink

For reference on how KVO works, I encourage you to check out this post before diving into this library.

License

SKObserver is available under the MIT License. Check out the LICENSE for more information.