ios - addSubView - adding a button inside a UIView adds the same button for it's SuperView as well -

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i following tutorial create rating button - https://developer.apple.com/library/prerelease/ios/referencelibrary/gettingstarted/developiosappsswift/lesson5.html

i created uiview inside uiviewcontroller inside storyboard drag , drop , uiview controlled below class.

class ratingcontrol: uiview {      required init(coder adecoder: nscoder) {         super.init(coder: adecoder)         let button = uibutton(frame: cgrect(x: 0, y: 0, width: 44, height: 44))         button.backgroundcolor = uicolor.redcolor()         button.addtarget(self, action: "ratingbuttontapped:", forcontrolevents: .touchdown)         addsubview(button)     }      override func intrinsiccontentsize() -> cgsize {         return cgsize(width: 320, height: 44)     }      func ratingbuttontapped(button: uibutton) {         print("button pressed 👍")     } }

the problem when add uibutton, it's showing 2 buttons, 1 in it's parent uiviewcontroller @ location (x:0, y:0) in addition 1 inside uiview. want button showing inside uiview inside uiviewcontroller.

i researched ways prevent it, 1 way add these buttons manually in storyboard instead of creating them in init, curious how works fine in tutorial. using ios 8.3.

screenshot:

enter image description here

you must have subclassed uiviewcontrollers view class ratingcontrol , view have added because of showing twice. kindly check because works proper if u add view need

enter image description here

if have added subclass viewcontrollers view , per scenario

enter image description here


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