ios - setting frame in swift doesn't work as expected -

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i'm porting app objective-c pure swift , i'm facing strange problem.

i've got alertview class replacement standard uialertview (now uialertcontroller) displaying animatable popups. alertview created in uiviewcontroller extension - it's inited view controller's view frame , added subview.

alertview has property popupview's instance - custom uiview subclass xib (on autolayout). popup should has dynamic height depends on contents (multiline message label).

now when i'm trying animate popup in alertview class:

  • when set in popupview settranslatesautoresizingmaskintoconstraints(false) - view's height correct setting frame in animation doesn't work expected - view sticked top left corner
  • when set settranslatesautoresizingmaskintoconstraints(true) - animation works expected view has size xib (won't expand according contents)

what can wrong here?

edit showing popup method:

private func showpopup(popupview: popupview) {     var beginframe = popupview.frame     beginframe.origin.y = -beginframe.size.height     beginframe.origin.x = self.bounds.size.width/2 - beginframe.width/2     popupview.frame = beginframe      var endframe = beginframe     endframe.origin.y = self.bounds.size.height/2 - endframe.size.height/2      popupview.hidden = false     dlog(beginframe)      uiview.animatewithduration(kanimationtime, delay: 0, usingspringwithdamping: kanimationdamping, initialspringvelocity: kanimationspringvelocity, options: uiviewanimationoptions.curveeasein, animations:         { () -> void in             dlog(endframe)             popupview.frame = endframe     }, completion: nil) }

in both cases shows in console:

(72.5, -155.0, 230.0, 155.0)

(72.5, 256.0, 230.0, 155.0)

edit2

settranslatesautoresizingmaskintoconstraints(false)

set-false

settranslatesautoresizingmaskintoconstraints(true)

set-true

ok, got solution. i've stopped mixing autolayout , direct frame modifications , use pure autolayout instead.


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