Easy use of the iOS edge learning--uitabbarcontroller

First, the use of uitabbarcontroller steps

• Initialize Uitabbarcontroller
• Set the Rootviewcontroller for UIWindow to Uitabbarcontroller
• Depending on the case, add the corresponding number of sub-controllers by the Addchildviewcontroller method
• Code implementation:

• Uitabbarcontroller There are two ways to add a controller
  • Adding a single child controller

  • -(void) Addchildviewcontroller: (Uiviewcontroller *) Childcontroller;

  • Set up a sub-controller array

  • @property (nonatomic,copy) Nsarray *viewcontrollers;

Second, Uitabbarbutton

• If the Uitabbarcontroller has n sub-controllers, there will be N Uitabbarbutton as child controls inside the Uitablebar
• If the Uitabbarcontroller has 4 sub-controllers, then the Uitabbar structure is roughly as shown

• What content is displayed inside the Uitabbarbutton, the Tabbaritem attribute of the corresponding sub-controller is determined

Third, the app mainstream UI framework structure

Easy use of the iOS edge learning--uitabbarcontroller