ios8 - iOS 8 Custom emoji keyboard Memory issue - Swift - -

i added emoji view keyboard . can use on simulator when run on iphone 6 crashes because of memory can't handle emojis ( think ) . instruments didn't me . here code

    // init emojis     let peopleemojipath : string = nsbundle.mainbundle().pathforresource("people", oftype: "plist")!     let peopleemoji :nsarray = nsarray(contentsoffile: peopleemojipath)!      let natureemojipath : string = nsbundle.mainbundle().pathforresource("nature", oftype: "plist")!     let natureemoji :nsarray = nsarray(contentsoffile: natureemojipath)!      let foodemojipath : string = nsbundle.mainbundle().pathforresource("food&drink", oftype: "plist")!     let foodemoji :nsarray = nsarray(contentsoffile: foodemojipath)!      let celebrationemojipath : string = nsbundle.mainbundle().pathforresource("celebration", oftype: "plist")!     let celebrationemoji :nsarray = nsarray(contentsoffile: celebrationemojipath)!      let activityemojipath : string = nsbundle.mainbundle().pathforresource("activity", oftype: "plist")!     let activityemoji :nsarray = nsarray(contentsoffile: activityemojipath)!      let travelemojipath : string = nsbundle.mainbundle().pathforresource("travel&places", oftype: "plist")!     let travelemoji :nsarray = nsarray(contentsoffile: travelemojipath)!      let objectsemojipath : string = nsbundle.mainbundle().pathforresource("objects&symbols", oftype: "plist")!     let objectsemoji :nsarray = nsarray(contentsoffile: objectsemojipath)!     // init emojis      let bigemojiarray : array<nsarray> = [peopleemoji,natureemoji,foodemoji,celebrationemoji,activityemoji,travelemoji,objectsemoji]     var emojibutton : uibutton!      var ypos : cgfloat = 1     var xpos : cgfloat = 0      var emojiscrollview : uiscrollview = uiscrollview(frame: cgrectmake(0, 0, self.frame.size.width, self.frame.size.height))     emojiscrollview.showshorizontalscrollindicator = false       emojiarray in bigemojiarray{         emojistring in emojiarray{             emojibutton = uibutton.buttonwithtype(.custom) as! uibutton             emojibutton.frame = cgrectmake(xpos, ypos, self.frame.size.height / 5, 40)             emojibutton.settitle(emojistring as? string, forstate: .normal)             emojibutton.addtarget(self, action: "iamemojibuttonpressed:", forcontrolevents: .touchupinside)             emojibutton.titlelabel?.font = uifont(name: "apple color emoji", size: 31)              if ypos  >= self.frame.size.height - self.frame.size.height / 5 - 1{                 xpos += 44                 ypos = 1             }              else{                 ypos += 43             }              emojiscrollview.addsubview(emojibutton)           }       }      emojiscrollview.contentsize = cgsizemake(xpos + 50, self.frame.size.height - self.frame.size.height / 5 - 1)     self.addsubview(emojiscrollview)  } 

and here image of allocation in instruments . can see big jump here . happens when press button brings emoji view super view

i need know problem , solve