Several methods for creating controller views and controller views

Several methods for creating controller views and controller views

1. Create Based on the storyboard description

 

2. Use the xib description to create

 

3. Create a view for the controller using the code

Self. window = [[UIWindow alloc] initWithFrame: [UIScreen mainScreen] bounds];
Self. window. backgroundColor = [UIColor whiteColor];

XZViewController * viewVc = [[XZViewController alloc] init];
ViewVc. view. backgroundColor = [UIColor redColor];
Self. window. rootViewController = viewVc; // The Red view is added to the window.

[Self. window makeKeyAndVisible];

 

= =

1. === controller view loading process ========================================

 

2. === lifecycle of the controller view ====================================

 

3. === processing of the controller view in case of memory warning ==============================