Relevant code snippet for Philips Hue SDK to be put into color loop mode

BulbViewController.m

/* Just a snippet from a modified PHViewController.m in Philips Hue's iOS SDK. 
  Here I have a IBOutlet UISwitch *partyTimeSwitch
  which is hooked up to a toggle Switch in my UI via Interface Builder */
/**
 Action for the party mode button
 */
-(IBAction) switchValueChanged{
  PHLightState *lightState = [[PHLightState alloc] init];
  if(_partyTimeSwitch.on) {
    [lightState setEffectMode:EFFECT_COLORLOOP];
  }
  else {
    [lightState setEffectMode:EFFECT_NONE];
  }
  [self sendState:lightState];
}

-(IBAction) toggleButtonPressed{
  if(_partyTimeSwitch.on){
    [_partyTimeSwitch setOn:NO animated:YES];
  }
  else{
    [_partyTimeSwitch setOn:YES animated:YES];
    
  }
}

/**
 Action sending state
 */
- (void)sendState:(PHLightState*) lightState {

  /***************************************************
   The BridgeSendAPI is used to send commands to the bridge.
   Here we are updating the settings chosen by the user
   for the selected light.
   These settings are sent as a PHLightState to update
   the light with the given light identifiers.
   Subsequent checking of the Bridge Resources cache after the next heartbeat will
   show that changed settings have occurred.
   *****************************************************/
  [lightState setOnBool:YES];
  // Create a bridge send api, used for sending commands to bridge locally
  id<PHBridgeSendAPI> bridgeSendAPI = [[[PHOverallFactory alloc] init] bridgeSendAPI];
  
  // Send lightstate to light
  PHBridgeResourcesCache *cache = [PHBridgeResourcesReader readBridgeResourcesCache];
  for (id light in cache.lights) {
    NSLog(@"light identifier is %@",light);
    [bridgeSendAPI updateLightStateForId:light withLighState:lightState completionHandler:^(NSArray *errors) {
      // Check for errors
      if (errors != nil) {
        for (PHError *error in errors) {
          // Error occured
          UIAlertView *errorAlert = [[UIAlertView alloc] initWithTitle:@"Error"
                                                               message:error.description
                                                              delegate:nil
                                                     cancelButtonTitle:nil
                                                     otherButtonTitles:@"Ok", nil];
          [errorAlert show];
        }
      }
    }];

  }

}