Changes

In situations where constraints are missing from a layout resulting in warnings, Interface Builder also provides the option to automatically add the constraints that it believes are missing.

The options to perform these tasks are accessed via the Resolve Auto Layout Issues menu in the toolbar as illustrated in Figure 19-14.

The top section of the menu represents tasks that relate to the currently selected views in the canvas, whilst the options in the lower section apply to all views in the currently selected view controller scene.