Eric Eric - 3 months ago 17
Objective-C Question

Install/Uninstall constraint programmatically

Is there a way to install and uninstall an Xcode interface builder

constraint
programmatically?

enter image description here

Answer

Connect the IBOutlet for the NSLayoutConstraint by CTRL+click the constraint and drag it to the viewController (for ex. @property (weak, nonatomic) IBOutlet NSLayoutConstraint *constraint;).

For removing the constraint:

[self.view removeConstraint:constraint]

for installing the constraint:

[self.view addConstraint:constraint]