iphone - How to passing different data on UICollection every time user push the button? -

can show me how passing different data on uicollection every time user push button, each button 1 data , have 3 button. need know how passing data using button trigger change data. code far:

@ibaction func opennewfilter(sender: anyobject) {     self.collectionview.datasource = self } func numberofsections() -> int {     return 2 }  //for collectionview, number of filters in section func collectionview(collectionview: uicollectionview, numberofitemsinsection section: int) -> int {      if section == 0 {         return self.filters.count     } else if section == 1 {         println("great")         return 1     } else {         return 0     } }  func collectionview(collectionview: uicollectionview, cellforitematindexpath indexpath: nsindexpath) -> uicollectionviewcell {     let cell = collectionview.dequeuereusablecellwithreuseidentifier("filter_cell", forindexpath: indexpath) filterthumbnailcell     var filterthumbnail = self.filterthumbnails[indexpath.row]     cell.filtertitle.text = filterthumbnail.filtername     //lazy loading      if indexpath.section == 0 {         // set standard cell, using data army         if filterthumbnail.filteredthumbnail != nil {             cell.imageview.image = filterthumbnail.filteredthumbnail         } else {             cell.imageview.image = filterthumbnail.originalthumbnail             //filterthumbnail class instance             filterthumbnail.generatethumbnail({ (image) -> void in                 if let cell = collectionview.cellforitematindexpath(indexpath) as? filterthumbnailcell {                     cell.imageview.image = image                 }             })         }     } else if indexpath.section == 1 {         //set "+" cell         println("booya")     }      return cell } 

you can initialize filterarray different content in each action , use in collectionview.