如何监听到 ThingSmartHome 的对象 home 发生了切换？

- (void)viewDidLoad {
    [super viewDidLoad];
    // 监听 家庭 是否发生切换
    [[NSNotificationCenter defaultCenter] addObserver:self
    selector:@selector(homeIdDidChangedTest) name:@"kThingTPNotificationHomeIdDidChanged" object:nil];
}
- (void)homeIdDidChangedTest {
    NSLog(@"\n== 家庭发生了切换");
    id<ThingFamilyProtocol> familyImpl = [[ThingSmartBizCore sharedInstance] serviceOfProtocol:@protocol(ThingFamilyProtocol)];
    ThingSmartHome *home = [ThingSmartHome homeWithHomeId:[familyImpl currentFamilyId]];
    NSLog(@"\n== 当前家庭为: %@" , home.homeModel.name );
}