Slides in a view from underneath resizing the main view. The info view will stay up for a certain time and then slide down, restoring the main view to the original state.
At start up, tell which view to operate in and what subview index to steal space from. If root view is a NavigationView this works:
[[SlidingInfoView sharedSlidingInfoView] setHostView:self.window.rootViewController.view onSubView:0];
To display info for two seconds:
[[SlidingInfoView sharedSlidingInfoView] displayInfo:@"Hello!" for:2];
It works with screen rotation as well.