Follow-up Doctor 1---START process analysis

The start of the follow-up physician starts with the Szdoctor/appdelegate.application method, as shown in the following code:

    _roottbviewcontroller1 = [[Mainviewcontroller alloc]init];    _roottbviewcontroller1.delegate = self;        Self.window.rootViewController = _roottbviewcontroller1;    [Self.window makekeyandvisible];

Where Mainviewcontroller is the subclass of Uitabbarcontroller, which is responsible for displaying the application's main interface. In Mainviewcontroller, the four options in the app are initialized, and each option is a selfbaseviewcontroller subclass. The application of the Standard tab bar layout is managed by Uinavigationcontroller adding it to the mainviewcontroller.

All constants in the system are stored in the appcommonlibrary/szcommonfiles/szdefine.h.

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Follow-up Doctor 1---START process analysis