backgroundImage(for:barMetrics:)
Returns the background image to use for a given bar position and set of metrics.
Declaration
func backgroundImage(for barPosition: UIBarPosition, barMetrics: UIBarMetrics) -> UIImage?Parameters
- barPosition:
The location of the navigation bar.
- barMetrics:
The metrics of the navigation bar.
Return Value
The image to use for the specified location and metrics.
Discussion
Resizable images will be stretched vertically, if necessary, for a position of UIBarPosition.topAttached.