Animation cannot work when using IBOutlet

[KnightJoker]

Hello guys~
I dragged an IBOutlet from storyboard, and I use Masonry to change it in a UIView animation block, but the animation seems not work so well.
Code:

[UIView animateWithDuration:1.0
delay:0.0
options:UIViewAnimationOptionCurveEaseIn
animations:^{
[self.registerView mas_updateConstraints:^(MASConstraintMaker *make){
make.top.mas_equalTo(0);
}];
}
completion:nil];

[robertjpayne]

@KnightJoker Masonry cannot update any constraints created by IB, you have to create constraints in code with Masonry to also be able to update them in code with Masonry.