ios - IBOutlet constraints won't align button upon load in iPad application -


i have uibutton that's presented on top of view (both created via xib). constraints uibutton placed programmatically.

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the button alpha. meaning, appears if user clicks upon view. when first appears it's misaligned, so:

enter image description here

but upon click button fine:

enter image description here

i've traced autolayout stack in console , there no signals of ambiguity. not sure problem since isn't code. i'm thinking deleting button , reimplementing since constraints created via iboutlet other programmer (shoot me in head).

here's code:

the below establishes buttons state when it's clicked on. reason why i've included because properties _primarytrailing , _primaryaligncenterx both nslayoutconstraints.

- (void)setstate:(kstepstate)state {     _state = state;      switch (state) {         case kstepstatewatchmodel:             [self setinstruction:@"watch model scenario part"                     primarytitle:@"model scenario"                   secondarytitle:nil];             _primarytrailing.active =             no;             _primaryaligncenterx.active = yes;             break;         case kstepstatepractice:             [self setinstruction:@"start first practice activity part"                     primarytitle:@"practice"                   secondarytitle:@"model scenario"];             break;         case kstepstateviewpractices:             [self setinstruction:@"pick left off"                     primarytitle:@"my practices"                   secondarytitle:@"model scenario"];             break; //        case : //            [self setinstruction:@"need refresher? (placeholder copy)" //                    primarytitle:@"model scenario" //                  secondarytitle:nil]; //            break;         case kstepstatewatchsubmission:             [self setinstruction:@"view submission part"                     primarytitle:@"my submission"                   secondarytitle:@"model scenario"];             break; //        case : //            [self setinstruction:@"resubmit part" //                    primarytitle:@"my submission" //                  secondarytitle:nil]; //            break;          default:             break;     } }


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