(ii) iOS app development combat

Second week MVC pattern

C belongs to the bridge function between M and V. V and M are generally not directly connected and do not communicate directly.

Logic to create buttons for the navigation bar, the bottom bar, and the bottom bar

1. Instantiate a Viewcontroller
2. Instantiate a navigationcontroller and initialize it with the viewcontroller above.
3. Set the title, Icon for Navigationcontroller
4. After repeating the above steps to get enough quantity
5. Instantiate a Tabbarcontroller
6. Tabbarcontroller is actually an array, fill the array with the above Navigationcontroller
7. Set the window's Rootviewcontroller to the Tabbarcontroller

Use the parent class to unify the same set of objects in different Viewcontroller

For example, 5 Viewcontroller need a background map, you can create a baseviewcontroller, which will write a unified background map settings. Then let these different viewcontroller inherit from this Baseviewcontroller, and then write the different parameters in these Viewcontroller respectively--subclasses can call the properties of the parent class directly, it should be noted that the properties of the parent class must be written in the .hin the file.

- (void)viewDidLoad {    [super viewDidLoad];        self.title = @"Two";    self.bgImageView.image = [UIImage imageNamed:@"bg2"];    }

(ii) iOS app development combat