![iOS编程（第4版） - [美] Christian Keur, [美] Aaron Hillegass, [美] Joe Conway](https://static.book345.com/covers/s/9787560997902.jpg)
书籍介绍
这不是一本跟手的API手册，而是一本教你'像程序员一样思考'的向导。它从内存的本质讲起：对象存在堆里，指针即所有权，谁拥有、谁销毁，讲得清清楚楚，让你真正理解ARC而非死记规则。它用委托（delegation）重新解释回调，把零散的事件通知统一成单一入口，逻辑一目了然。多位读者提到，翻旧版时遇到的warning、消失的'empty project'模板、Xcode升级后的编译报错，它都能给你原理层面的解答。当然，它用的是Objective-C，部分代码在新环境下需要自己调整——但这恰恰是它的诚实之处：它给你的是可迁移的思维，而非随时会过时的语法。适合有一定编程基础、想打通iOS底层原理的开发者。
作者简介
Christian Keur是Big Nerd Ranch的高级讲师和软件工程师，负责编写Big Nerd Ranch的“iOS新手培训课程”教材。该教材广受好评，是本书的原型。Christian毕业于美国佐治亚理工学院计算机科学系，目前居住在亚特兰大。
Aaron Hillegass是Big Nerd Ranch的创始人之一，曾就职于NeXT公司和Apple公司，他拥有近20年的Objective-C、Cocoa、iOS开发与教学经验。Aaron与他人合著了《Mac OS X编程》和《Objectibe-C编程》。
Joe Conway曾参与编写了“iOS新手培训课程”教材。他最近创办了stable/kernel 公司，开发高质量的移动应用。
AI导读
核心看点
- 荣获Jolt大奖，系统讲解iOS开发全貌
- 深入剖析Objective-C基础与Cocoa设计模式
- 涵盖Xcode技巧、内存管理及视图层级原理
读者共识
- 被誉为iOS入门佳作，讲解透彻，案例上手容易
- 翻译质量优秀，术语准确，优于多数翻译技术书
- 因版本过老，代码兼容性差，不建议零基础盲读
精彩摘录
- "在便捷方法中，应该使用 self，而不是直接使用类名，这样子类也能使用同一个方法。"
- "All Objective-C objects are stored in a part of memory called the heap. When we send an alloc message to a class, a chunk of memory is allocated from the heap. This chunk includes space for the object’s instance variables. Pointer variables convery ownership of the objects that they point to. 1. Whe"
- "How objects lose owners 1. A variable that points to the object is changed to point to another object. 2. A variable that points to the object is set to nil. 3. A variable that points to the object is itself destroyed. A pointer variable stores the address of an object, that object has an owner and "
- "Build and run the application again. This time, the objects are destroyed properly. Every retain cycle can be broken down into a parent-child relationship. A parent typically keeps a strong reference to its child, so if a child needs a pointer to its parent, that pointer must be a weak reference to "
- "A property is declared in the interface of a class where methods are declared. A property declaration has the following form: @property NSString *itemName; When you declare a property, you are implicitly declaring a setter and a getter for the instance variable of the same name. So the above line of"
- "Delegation is an object-oriented approach to callbacks. A callback is a function that is supplied in advance of an event and is called every time that event occurs. Some objects need to make a callback for more than one event. For instance, the location manager wants to "callback" when it finds a ne"
- "A view is an instance of UIView or one of its subclasses. A view knows how to draw itself on the application’s window, an instance of UIWindow. A view exists within a hierarchy of views. The root of this hierarchy is the application’s window. A view handles events, like touches. Core Graphics CGCont"
- "Instances of UIResponder can become the first responder of the window and will receive nevents when the device is shaken or a key is pressed on the keyboard."
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