button - Change Selected Image Bug In Swift -

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i have button , want change selected image. after change image of button. there show blue point on button.

after selected

before selected

@ibaction func videoshowbtn(sender: anyobject) {      if videoshowoutlet.selected {         playervideo.hidden = false         videoshowoutlet.selected = !videoshowoutlet.selected     } else {         playervideo.hidden = true         videoshowoutlet.selected = !videoshowoutlet.selected     }      playervideo.play() }

but same code. button won't shows blue point.

@ibaction func sharecontentshowbtn(sender: anyobject) {      if sharecontentshowoutlet.selected {         sharevideourltf.hidden = false         sharevideocontenttv.hidden = false         sharecontentshowoutlet.selected = !sharecontentshowoutlet.selected     } else {         sharevideourltf.hidden = true         sharevideocontenttv.hidden = true         sharecontentshowoutlet.selected = !sharecontentshowoutlet.selected     }  }

can tell me why , how fix it? thanks!

fastest way solve it: set tintcolor clearcolor, on storyboard: enter image description here

or programmatically:

videoshowoutlet.tintcolor = uicolor.clearcolor()

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