View Controller Basics   视图控制器基础 Apps running on iOS–based devices have a limited amount of screen space for displaying content and therefore must be creative in how they present information to the user. Apps that have lots of information to display…

View Controller Basics Apps running on iOS–based devices have a limited amount of screen space for displaying content and therefore must be creative in how they present information to the user. Apps that have lots of information to display must there…

一.UIViewController 做iOS开发的经常会和UIViewController打交道,从类名可知UIViewController属于MVC模型中的C(Controller),说的更具体点它是一个视图控制器,管理着一个视图(view). UIViewController的view是lazy loading的,当你访问其view属性的时候,view会从xib文件载入或者通过代码创建(覆盖loadView方法,自定义其view hierarchy),并返回,如果要判断一个View Con…

Application Delegate(应用程序委托) Application Name: SingleView SingleViewAppDelegate.h #import <UIKit/UIKit.h> @interface SingleViewAppDelegate : UIResponder <UIApplicationDelegate> @property (strong, nonatomic) UIWindow *window; @property (strong,…

1.UIView,UIScreen ,UIWindow的区别? UIScreen是关于设备的尺寸大小.UIWindow是在UIScreen上作画的区域.UIView是在uiwindow上draw视图. 2.…

About View Controllers View controllers are a vital link between an app’s data and its visual appearance. Whenever an iOS app displays a user interface, the displayed content is managed by a view controller or a group of view controllers coordinating…

About Events in iOS Users manipulate their iOS devices in a number of ways, such as touching the screen or shaking the device. iOS interprets when and how a user is manipulating the hardware and passes this information to your app. The more your app…

1.View Controller 基础 1.1 View Controller 分类 ViewController分为container view controller 和content view controller两种类型. 这两种类型只是用途不同,前者作为一个容器容纳其他的view controller,后者用来显示内容,代码上面区别不大.前者包括UINavigationViewController. UITabBarViewController等,后者包括UITabViewContro…

前言 古老的MVC架构是容易被iOS开发者理解和接受的设计模式,但是由于iOS开发的项目功能越来越负责庞大,项目代码也随之不断壮大,MVC的模糊定义导致我们的业务开发工程师很容易把大量的代码写到视图控制器中,行业中对这种控制器有个专业词汇Massive ViewControler(臃肿的视图控制器).代码臃肿导致可读性可维护性差,而且这种不清晰的设计还有许多的副作用,比如代码重用性差.作为架构师需要关注项目的代码质量.指导业务开发工程师写出高质量,高健壮性,高可用的代码也是很重要的工作.因此需要…

Resource Management in View Controllers 视图控制器的资源管理 View controllers are an essential part of managing your app’s resources. View controllers allow you to break your app up into multiple parts and instantiate only the parts that are needed. But more t…