Set view controller to iPhone or iPad mode,

Set view controller to iPhone or iPad mode,

When writing iOS programs, adjusting the display size and control size of the view controller is a laborious task. Especially for kids shoes with mac, it is more difficult to control, in this case, you can set the view controller Size for the iphone or ipad as needed. You can modify the setting item "Use Size Classes ":

 

• When selected: view controller can be used for both iPhone and ipad sizes
• When not selected: There is a prompt box to indicate whether to use the iPhone size or ipad size. The runtime will change according to the selected simulator.