I'm a designer with a bit of Obj-C experience trying to help our engineers update a fairly large iOS app to use Auto Layout programatically, one view at a time.
I know that my constraints are working correctly, however when I preview them in the simulator, the updated views continue to scale up to fit the larger screen devices (iPhone 6 and up). Ideally I'd like to see the views that have Auto Layout displayed at the device's native resolution, and non-updated, frame-based views continue to scale.
Does Auto Layout need to be enabled globally somewhere or at a root view, and is there a recommended approach to converting to Auto Layout that will make the updates easy to preview at native res on the larger device simulators?