CODEWITHSUNDEEP
iosobjective-cuiviewautolayoutios-autolayout
S.J
S.J

Reputation: 3071

Autolayout not animating in iOS 10 but working fine in iOS 9

- (IBAction)btnA:(id)sender {
    if(self.height.constant == 300) {
         self.height.constant = 50;
    } else {
         self.height.constant = 300;
    }

    [self.subView1 setNeedsUpdateConstraints];

    [UIView animateWithDuration:1.0 animations:^{
        [self.subView1 layoutIfNeeded];
    }];
}

I am using this code but on iOS10 its not animating its just jump increasing and decreasing mySubview1 height. Why?

Same code is working fine in iOS9

Upvotes: 3

Views: 1644

Answers (1)

Teffi
Teffi

Reputation: 2508

For iOS10 its the view's superview which you have to force layout. 

//Force apply all constraints prior to the change in constant.
[self.view.superview layoutIfNeeded];

//Update constant
self.height.constant = 0;

[UIView animateWithDuration:1.0 animations:^{
    [self.view.superview layoutIfNeeded];
}

I believe this behaviour is caused by the change in Xcode8 - iOS10 layout

References:

https://stackoverflow.com/a/39501882

https://stackoverflow.com/a/39548367/1045672

Upvotes: 9

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