ios - In swift, how do I make layers of a view programmatically? -

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in swift, have view 3 objects. want button , label on top of image. concept maybe layers in photoshop. currently, image on top of button , label, can not see button , label. how done?

my code here:

import uikit      class viewcontroller: uiviewcontroller {         override func viewdidload() {             super.viewdidload()             // additional setup after loading view, typically nib.             let myfirstlabel = uilabel()             let myfirstbutton = uibutton()             let myfirstimage = uiimage(named: "1792614.jpg")             let myfirstimageview = uiimageview(image: myfirstimage)              myfirstlabel.text = "i made label on screen #toogood4you"             myfirstlabel.font = uifont(name: "markerfelt-thin", size: 45)             myfirstlabel.textcolor = uicolor.redcolor()             myfirstlabel.textalignment = .center             myfirstlabel.numberoflines = 5             myfirstlabel.frame = cgrectmake(15, 54, 300, 500)              myfirstbutton.settitle("✸", forstate: .normal)             myfirstbutton.settitlecolor(uicolor.bluecolor(), forstate: .normal)             myfirstbutton.frame = cgrectmake(160, 284, 50, 50)             myfirstbutton.addtarget(self, action: "pressed:", forcontrolevents: .touchupinside)              self.view.addsubview(myfirstlabel)             self.view.addsubview(myfirstbutton)             self.view.addsubview(myfirstimageview)         }          func pressed(sender: uibutton!) {             var alertview = uialertview()             alertview.addbuttonwithtitle("ok")             alertview.title = "title"             alertview.message = "message"             alertview.show()         }          override func didreceivememorywarning() {             super.didreceivememorywarning()             // dispose of resources can recreated.         }       }

the answer here:

self.view.addsubview(myfirstlabel) self.view.addsubview(myfirstbutton) self.view.addsubview(myfirstimageview)

when add subview, gets put @ top, achieve want, add view want @ bottom first, , 1 want on top last:

self.view.addsubview(myfirstimageview) self.view.addsubview(myfirstbutton) self.view.addsubview(myfirstlabel)

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