Set size of view in NIB / XIB file

ios xcode5 nib

In the Attributes inspector, in the Simulated Metrics section, change the size to None. This unlocks the view and you can drag to resize it.

EDIT: As noted in the comments below, in more recent versions of Xcode you must set the attribute to Freeform, not None.

ios xcode5 nib

There is the solution for XCode 9.0

Select your view and set simulated Metrics as this :

After this, you can edit your view's size :

DEPRECATED :

There is the solution for XCode 8.1

Select your view and set simulated Metrics as this :

After this, you can edit your view's size :

ios xcode5 nib

Such settings:
XIB settings

makes me possible to change view size:
XIB settings

Xcode version: 5.1 (5B130a)

CodeHunter