iCarousel stop at user picked index

Question

EDIT :

I'm making an app like a Slot Machine, i added iCarousel for the slot object. So I have a button that rotates the iCarousel. In my iCarousel view there are two slots (Slot1 and Slot2). Below is my iCarouselView: (The box is where the TWO carousel is)

This is how I spin my iCarousel:

-(IBAction) spin {

[carousel1 scrollByNumberOfItems:-35 duration:10.7550f];
[carousel2 scrollByNumberOfItems:-35 duration:10.7550f];

}

Here is what I wanna do: I want to forcefully make it stop to the index the user picks.

I have done it this way, the image below is a newViewcontroller that contains the UIImageView with a button in it, so when the user taps it, my CustomPicker pops up. My CustomPicker contains the image on what the user have picked on the camera roll. So each button has a specific value sent to my iCarouselView. carousel1 for slot1 and carousel2 for slot2.

So my problem is to spin the carousel and then for a specific time make it stop to the desired image/index the user picks.

Sorry for my bad english.

Answer 1

It's easy. I've done something similar before.

In the following method below:

- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSUInteger)index             reusingView:(UIView *)view{

   //Configure your view here
   ..... 

  //Add a button on each view of the carousel
  UIButton * someButton = [[UIButton alloc] initWithFrame:view.bounds];
     [someButton setAlpha:0.0];
     [someButton addTarget:self action:@selector(fingerLanded:) forControlEvents:UIControlEventTouchDown];
     [view addSubview:someButton];
     [view bringSubviewToFront:someButton];

    //Add a tag - correspond it to the index
     someButton.tag = index;

   //Make sure the view is user interaction enabled
   [view setUserInteractionEnabled:YES];

    //Also make sure the button can actually receive touches and there is no view 
    //blocking touch events from being sent to the button.

  return view;
}

Also add

- (void) fingerLanded:(id) sender{

UIButton * theButtonFingerLandedOn = (UIButton *) sender;

//This is the index the user tapped his finger on
NSUInteger index = theButtonFingerLandedOn.tag;

//Scroll to that particular index
[self.carousel scrollToItemAtIndex:index animated:YES];

}

Also add

- (void) viewDidLoad{

  //You may need this to enable user interaction on a view flying by    
  // Look in the - (void)transformItemViews method of the iCarousel library
  self.carousel.centerItemWhenSelected = NO;

 }

You have to do something similar. Hope it was helpful :) !!