How to listen to the object home of ThingSmartHome when it switches?

- (void)viewDidLoad {
    [super viewDidLoad];
    // Monitor whether the home has been switched
    [[NSNotificationCenter defaultCenter] addObserver:self
    selector:@selector(homeIdDidChangedTest) name:@"kThingTPNotificationHomeIdDidChanged" object:nil];
}
- (void)homeIdDidChangedTest {
    NSLog(@"\n== The home has been switched");
    id<ThingFamilyProtocol> familyImpl = [[ThingSmartBizCore sharedInstance] serviceOfProtocol:@protocol(ThingFamilyProtocol)];
    ThingSmartHome *home = [ThingSmartHome homeWithHomeId:[familyImpl currentFamilyId]];
    NSLog(@"\n== The current home is: %@" , home.homeModel.name );
}