HomeKit: Check for permission

Question

I have an iOS application using HomeKit and I need to check if application can access HomeKit Store. As I noticed, homeManagerDidUpdateHomes will be called anyway. How do I check for HomeKit store permission?

Answer 1

The Swift 4.2 version of Volodymyr's hack/answer.

import UIKit
import HomeKit

class HomeKitAccessViewController: UIViewController {

    let manager = HMHomeManager()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.manager.delegate = self

    }

}

extension HomeKitAccessViewController: HMHomeManagerDelegate {

    func homeManagerDidUpdateHomes(_ manager: HMHomeManager) {
        let number = manager.value(forKey: "_didUpdateHomes")

        if let num = number, let boolValue = num as? Bool {
            if boolValue == true {
                print("We got access.")
            }else{
                print("We don't have access")
            }
        }
    }
}

Answer 2

I have a hack for this problem which is working for me:

Init HMHomeManager

self.manager = [[HMHomeManager alloc] init];
self.manager.delegate = self;

Check private property in

-(void)homeManagerDidUpdateHomes:(HMHomeManager *)manager {

  //HACK to check that the application does not have HomeKit permission
  NSNumber *private = [self.manager valueForKey:@"_didUpdateHomes"];


  if (private && ![private boolValue]) {
    //Warning to user
    return; 
  }
  // Do other logic
}

I hope Apple provides us API for this soon

Answer 3

Edit: This apparently doesn't work anymore. Unfortunately, I'm not doing HK development anymore. See @windwalker's comment below for some info.

[[HMHomeManager alloc] init]

will return nil if you don't have access to the home. Other HomeKit inits will also return nil, that's just the one that I'm checking since it's the first thing that we try once the app loads.