The relative width of the primary view controller’s content.
- iOS 8.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
Use this property to specify your preferred width for the primary view controller’s view. The value of this property is a floating-point number between
1 that represents the percentage of the overall width of the split view controller. For example, the value
0 represents 40% of the current width. The default value of this property is
automatic, which results in an appropriate width for the primary view controller.
The actual width of the primary view controller is constrained by the values in the
maximum properties. The split view controller makes every other attempt to honor the width you specify but may change this value to accommodate the available space. You can get the actual width assigned to the primary view controller’s view from the