iOS Programming Touch Events and UIResponder  1 Touch Events  As a subclass of UIResponder, a UIView can override four methods to handle the four distinct touch events: 作为UIResponder的一个子类,UIView可以重写四个方法来处理touch events. (1) a finger or fingers touches…

Introduction (已看) Prerequisites What Has Changed in the Sixth Edition? Our Teaching Philosophy How to Use This Book How This Book Is Ogranized Style Choices Typographical Conventions Necessary Hardware and Software 1. A Simple ios Application (已看) Cr…

iOS  Programming  UIGestureRecognizer and UIMenuController A UIGestureRecognizer intercepts touches that are on their way to being handled by a view. 一个UIGestureRecognizer拦截touches 在他们被一个view处理的路上. When it recognizes a particular gesture, it sends a…

iOS programming Delegation and Text Input  1.1 Text Fields    CGRect textFieldRect = CGRectMake(40, 70, 240, 30);UITextField *textField = [[UITextField alloc] initWithFrame:textFieldRect]; // Setting the border style on the text field will allow us t…

本文转载自:ios开发 之 UIResponder详解 我们知道UIResponder是所有视图View的基类,在iOS中UIResponder类是专门用来响应用户的操作处理各种事件的,包括触摸事件(Touch Events).运动事件(Motion Events).远程控制事件(Remote Control Events).我们知道UIApplication.UIView.UIViewController这几个类是直接继承自UIResponder,所以这些类都可以响应事件.当然我们自定义的继承…

iOS Programming Camera  2  1.1 Creating BNRImageStore The image store will fetch and cache the images as they are needed. It will also be able to flush the cache if the device runs low on memory.   Create a new NSObject subclass called BNRImageStore.…

iOS Programming Views :Redrawing and UIScrollView  1.1 event  You are going to see how views are redrawn in response to an event. 你将看到view如何响应event的. You declared properties in header files. You can also declare properties in class extensions. 你可以声明属…

iOS Programming  View and View Hierarchy 视图和视图等级 1.1(1)File → New → Project.. From the iOS section, select Application, choose the Empty Application template, and click Next. 1.2 View Basics  (1)A view is an instance of UIView or one of its subclasse…

网上介绍iOS事件机制的文章,有不少都讲得很好,搬运一次意义不大,这里我就列一些要点吧. 跟Android一样,iOS的Touch事件也是从外到内传递,然后从内到外响应,可以看成一个U型结构.然而,个人认为,iOS的api比Android更加清晰.简单易懂. 事件从外向内传递,有两个api可以干预,一个是hitTest,另一个是pointInside. 事件传递的目标是找到第一个响应事件的对象,如果找不到,事件就扔掉了. 事件从第一个响应事件的对象开始向外传递,每个能响应事件的对象都是UIRes…

iOS programming  UITableView and UITableViewController A UITableView displays a single column of data with a variable number of rows. UITableView 展示单列数据和不定数量的行.    Create a new iOS Empty Application project and configure it 1.1 UITableViewController…