ios--write view in pure code mode

Appdelegate:

1 #import "AppDelegate.h"2 #import "TestController.h"3 4 @interfaceappdelegate ()5@property (nonatomic,strong) TestController *Controller;6 @end7 8 @implementationappdelegate9 Ten  One-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchoptions { A     //Override point for customization after application launch. -Self.window =[[UIWindow alloc]init]; -  theSelf.controller =[[TestController alloc]init]; -  -Self.window.rootViewController =Self.controller; -      + [Self.window makekeyandvisible]; -     returnYES; +}

TestController:

1 #import "TestController.h"2 #import "RootView.h"3 4 @interfaceTestController ()5 6@property (nonatomic,strong) Rootview *Rootview;7 8 @end9 Ten @implementationTestController One  A- (void) Viewdidload - { - [Super Viewdidload]; the      -Self.rootview =[[Rootview Alloc]initwithframe:[[uiscreen Mainscreen]bounds]]; -Self.view =Self.rootview; - } +  - @end

Rootview Inheritance UIView

1 #import "RootView.h"2 3 @interfaceRootview ()4 5 @end6 7 @implementationRootview8 9-(Instancetype) initWithFrame: (CGRect) FrameTen { OneSelf =[Super Initwithframe:frame]; A     if(self) { -Self.backgroundcolor =[Uicolor Bluecolor]; -     } the     returnSelf ; - } -  - @end

ios--write view in pure code mode