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kvocontroller


The KVOController framework is a powerful utility for managing Key-Value Observing (KVO) in your iOS or macOS applications. It aims to simplify the process of observing changes in values of properties without the need for boilerplate code.

Features

  • Simplifies KVO setup and teardown.
  • Helps avoid KVO-related crashes and memory leaks.
  • Provides automatic observer removal upon observer or object deallocation.
  • Supports observing collections and nested objects.
  • Enables efficient and flexible KVO management.

Installation

To install KVOController using CocoaPods, add the following line to your `Podfile`:

pod 'KVOController', '~> 1.2.0'

Usage

Objective-C

In your Objective-C code, you can start using KVOController by following these steps:

Step 1: Import the Framework

#import <KVOController/KVOController.h>

Step 2: Create an Instance

Create an instance of `FBKVOController` as a property of the observing object.

@property (nonatomic, strong) FBKVOController *kvoController;

Step 3: Start Observing

Start observing the target object’s property using the `observe: keyPath: options: block:` method.

[self.kvoController observe:targetObject keyPath:@"propertyName" options:NSKeyValueObservingOptionNew block:^(id observer, id object, NSDictionary *change) {
    // Handle property change
}];

Swift

In your Swift code, you can start using KVOController by following these steps:

Step 1: Import the Framework

import KVOController

Step 2: Create an Instance

Create an instance of `KVOController` as a property of the observing object.

var kvoController: FBKVOController? = nil

Step 3: Start Observing

Start observing the target object’s property using the `observe(_: keyPath: options: block:)` method.

kvoController?.observe(targetObject, keyPath: "propertyName", options: .new) { (observer, object, change) in
  // Handle property change
}

Advanced Usage

KVOController provides additional features for advanced usage:

1. Collection Observation

You can observe collections using the `observe(_: keyPath: options: block: action:)` method. This allows you to handle granular changes within collections, such as insertions, deletions, and replacements.

2. Remove Observers

To remove a specific observer, you can use the `unobserve(_: keyPath:)` method. This ensures you stop observing changes for a particular key path.

3. Pause Observations

You can pause and resume observations using the `pause()` and `resume()` methods. This can be helpful when you want to temporarily suspend notifications.

Documentation

For detailed information and full API documentation, refer to the KVOController GitHub repository.

Conclusion

The KVOController framework simplifies the setup and management of Key-Value Observing in your iOS or macOS applications. By providing a cleaner and more efficient way to observe property changes, it helps improve the overall robustness and maintainability of your codebase.