Swift ERROR- [__NSCFData gotoShowChannel11] When i create button in Delegate and add view on tabbar -

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i gating problem in ios 8 code working in ios 9 . have create 1 transparent button , add subview in tabbar method. problem button event not working when tabar load second time , problem in ios 8 , working in iso 9. here code

delegate 

var button_oftabbar = uibutton();      //var button_oftabbar:uibutton!;      //uibutton();= uibutton(type: uibuttontype.system)

in tabbar 

class tabbar: uitabbarcontroller,uitabbarcontrollerdelegate {         //let button_oftabbar   = uibutton();      var delegate1: appdelegate!      let adatabase : databaseinit = databaseinit()      override func viewdidload() {         super.viewdidload()            uitabbar.appearance().tintcolor = uicolor(red: 242/255.0, green: 134/255.0, blue: 55/255.0, alpha: 1.0)         self.delegate=self;          delegate1 = uiapplication.sharedapplication().delegate as! appdelegate            uitabbar.appearance().bartintcolor = uicolor.whitecolor()           if(delegate1.tag_jive_channel_tab == 0)         {            //  delegate1.button_oftabbar.removefromsuperview();            // delegate1.button_oftabbar.settitlecolor(uicolor.blackcolor(), forstate: uicontrolstate.normal)               delegate1.button_oftabbar.hidden = false;             let widthofbtn:cgfloat = self.tabbar.frame.size.width/5;          delegate1.button_oftabbar.frame = cgrectmake(0, self.tabbar.frame.origin.y, widthofbtn, self.tabbar.frame.size.height)             delegate1.button_oftabbar.backgroundcolor = uicolor.redcolor()//clearcolor()             //delegate1.button_oftabbar = uibutton(type: uibuttontype.system)         delegate1.button_oftabbar.tintcolor = uicolor.redcolor()//clearcolor()         delegate1.button_oftabbar.addtarget(self, action: "gotoshowchannel11", forcontrolevents: uicontrolevents.touchupinside)          self.view.addsubview(delegate1.button_oftabbar);           }      }     override func viewdidappear(animated: bool) {         } func gotoshowchannel11() {          delegate1.button_oftabbar.hidden = true;         //orangecolor tabbar         //self.tabbarcontroller?.tabbar.tintcolor = uicolor.redcolor();         delegate1.tag_jive_channel_tab = 1;          nsnotificationcenter.defaultcenter().postnotificationname("update_tabbar", object: nil,             userinfo: nil);              //uicolor(red: 146/255.0, green: 146/255.0, blue: 146/255.0, alpha: 1.0)     }

when use line delegate1.button_oftabbar = uibutton(type: uibuttontype.system) button not show custom/system in both

i try func gotoshowchannel11(sender: uibutton!) please me . stuck in ios 8 problem . , error error- [__nscfdata gotoshowchannel11] please 1 me . have found solution . thankyou .


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