ios - Swift: Simple Animation? -

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i have button , textview on vc. textview automatically hidden.

textview.hidden = true

if press button, textview shows up.

 @ibaction func buttonispressed(sender: anyobject) {      textview.hidden = false  }

is there way add simple "fade" animation textview?

i mean if press button, textview should fade in.

i heard facebooks pop framework, isn't there easier way?

//instead of textview.hidden = true

  textview.alpha = 0

//now on press action

 @ibaction func buttonispressed(sender: anyobject) {   uiview.animatewithduration(1.0, animations: { () -> void in       self.textview.alpha = 1.0     }) }

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