基本概念: 加速计: 又称加速度计,测量设备运动的加速度. 加速度: 矢量,描绘速度的方向和大小变化的快慢. 陀螺仪: 感测与维持方向的装置. 原文: Motion Event声明: 由于本人水平有限,翻译定有不当甚至错误之处,如有发现还望指出. 当用户移动,摇晃,或倾斜设备时,产生motion事件.这些motion事件被设备硬件检测到,就是加速计和陀螺仪. acclerometer事实上是由3个加速计组成,X,Y,Z坐标轴各有一个.每一个测量随着时间的推移以线性的速度变化.结合这三个加速计可以…

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…

Gesture Recognizers 手势识别器 Gesture recognizers convert low-level event handling code into higher-level actions. They are objects that you attach to a view, which allows the view to respond to actions the way a control does. Gesture recognizers interpr…

Event Delivery: The Responder Chain 事件传递:响应链 When you design your app, it’s likely that you want to respond to events dynamically. For example, a touch can occur in many different objects onscreen, and you have to decide which object you want to resp…

事件是发送给应用程序来通知它用户动作的对象.在iOS中,事件可以有多种形式:多触摸事件,motion(,移动,手 势)事件---例如,设备的加速计(accelerometer)--和控制多媒体的事件.(最后一种类型的事件被称为一个远程控制事件因为它起始于一个 耳机或其他外部访问配件).如下图所示: 在iOS中,UIKit和Core Motion框架负责事件传播和投递. 一.事件类型和投递:一 个iPhone.iPad或者iPod touch设备有多种方式集成输入流数据给应用程序访问.多触摸技术直…

一.Gesture Recognizers Gesture Recognizers是在iOS3.2引入的,可以用来识别手势.简化定制视图事件处理的对象.Gesture Recognizers的基类为UIGestureRecognizer,这一个抽象基类,定义了实现底层手势识别行为的编程接口.在UIKit框架中提供了6个具体的手势识别类,用来识别常见的手势.这6个手势识别器类为: UITapGestureRecognizer:用来识别点击手势,包括单击,双击,甚至三击等.UIPinchGestur…

View and Window Architecture 视图和窗口架构 Views and windows present your application’s user interface and handle the interactions with that interface. UIKit and other system frameworks provide a number of views that you can use as-is with little or no mod…

写在前面 最近的一个iOS App项目中遇到了这么问题:通过App访问服务器的大多数资源不需要登录,但是访问某些资源是需要用户提供验证的,一般来说,通常App的做法(譬如美团App)将这些资源放在“我的”模块,在未登录情况下,当点击“我的”某个模块时,以modally给出一个界面用于登录,我不晓得美团是怎么实现的:但在我看来,比较优雅的方式是在网络底层实现“modally呈现登录界面”,具体来说,当用户欲访问“我的购物券”时,在网络访问层发现用户未登录,就弹出一个登陆界面,用户登录成功后,就将这…

一.Gesture Recognizers Gesture Recognizers是在iOS3.2引入的,可以用来识别手势.简化定制视图事件处理的对象.Gesture Recognizers的基类为UIGestureRecognizer,这一个抽象基类,定义了实现底层手势识别行为的编程接口.在UIKit框架中提供了6个具体的手势识别类,用来识别常见的手势.这6个手势识别器类为: UITapGestureRecognizer:用来识别点击手势,包括单击,双击,甚至三击等. UIPinchGestu…

  Incorporating Gesture Support 结合手势支持 You can add greater interactivity to your collection views through the use of gesture recognizers. Like any view, you can add a gesture recognizer to a collection view and use it to trigger actions when those ge…

Views Because view objects are the main way your application interacts with the user, they have many responsibilities. Here are just a few: 因为视图对象是应用程序跟用户交互的主要方式,所以它们有很多责任.以下是其中一小部分: Layout and subview management 布局和子视图管理 A view defines its own defau…

原文:View Programming Guide for iOS View and Window Architecture Views and windows present your application’s user interface and handle the interactions with that interface. UIKit and other system frameworks provide a number of views that you can use a…

Next About Windows and Views 关于窗口和视图 In iOS, you use windows and views to present your application’s content on the screen. Windows do not have any visible content themselves but provide a basic container for your application’s views. Views define a…

Gesture Recognizers与触摸事件分发 通过一个问题引出今天的知识: 1.大家应该都遇见过 当需要给tableView 添加一个tap 手势识别 但是tableView 的上的事件(滑动...)还不影响,这时候应该怎么做呢? 答:应该设置tap.cancelsTouchesInView = NO; (看完下面的解释因该就知道为什么了) 一.Gesture Recognizers Gesture Recognizers是在iOS3.2引入的,可以用来识别手势.简化定制视图事件处理的对…

Gesture Recognizers Gesture recognizers convert low-level event handling code into higher-level actions. They are objects that you attach to a view, which allows the view to respond to actions the way a control does. Gesture recognizers interpret tou…

  Animations Animations provide fluid visual transitions between different states of your user interface. In iOS, animations are used extensively to reposition views, change their size, remove them from view hierarchies, and hide them. You might use…

iOS 7 UI Transition Guide Preparing for Transition Before You Start Scoping the Project Supporting iOS 6 Updating the UI Appearance and Behavior Bars and Bar Buttons Content Views Controls Temporary Views Supporting iOS 6 If business reasons require…

Ios二维码扫描 这里给大家介绍的时如何使用系统自带的二维码扫描方法和一些简单的动画! 操作步骤: 1).首先你需要搭建UI界面如图:下图我用了俩个imageview和一个label 2).你需要在你当前的控制器中导入 #import <AVFoundation/AVFoundation.h> <AVCaptureMetadataOutputObjectsDelegate>代理 3).在@interface中定义 @property (nonatomic,strong)AVCapt…

Spring内置的event有 1.ContextRefreshedEvent This event is published when the ApplicationContext is either initialized or refreshed. This can also be raised using the refresh() method on the ConfigurableApplicationContext interface. 2.ContextStartedEventT…

本文转自:http://beyondrelational.com/modules/12/tutorials/24/tutorials/9686/getting-started-with-ssis-part-10-event-handling-and-logging.aspx Let us now add some more features to our package. We would now add Event handling and Logging to our package cre…

Xcode 9.0 新建工程报错 xcode Safe Area Layout Guide Before IOS 9.0 如下图,在Builds for 选择iOS9.0 and Later,不勾选Use Safe Area Layout Guides,否则会导致用不了iOS的这个新功能了.…

http://www.codeproject.com/Articles/2357/Console-Event-Handling Console Event Handling Kumar Gaurav Khanna, 29 May 2002    4.59 (46 votes)   Rate this: vote 1vote 2vote 3vote 4vote 5     This article discusses how to handle console-window specific ev…

今天使用Xcode9.1重建项目,什么都没写运行报错:Safe Area Layout Guide before iOS 9.0!目前为止,不晓得原因,现记录解决方法:…

Event Handling A diagram of the architecture of this system:     HWNDMessageHandler owns the WNDPROC, and is code that is shared with the non-Aura windows build. This code is in production and "should work." On this diagram, the new classes are…

Windows Every iOS application needs at least one window—an instance of the UIWindow class—and some may include more than one window. A window object has several responsibilities: 每个iOS应用程序需要至少一个窗口---UIWindow类的一个实例---有些可能有不止一个窗口.窗口对象的任务是: It contains…

先谈谈在开发中遇到的手势问题: 今天在开发android程序时,在 View.OnTouchListener 的 onTouch(View view, MotionEvent motionEvent) 方法中建立GestureDetector 和 相应的 GestureDetector.OnGestureListener,目的是在 GestureDetector.OnGestureListener 的 onLongPress 方法中移动 onTouch 参数中的view.但是发现这种方法根本不好…

扫描相关类 二维码扫描需要获取摄像头并读取照片信息,因此我们需要导入系统的AVFoundation框架,创建视频会话.我们需要用到一下几个类: AVCaptureSession 会话对象.此类作为硬件设备输入输出信息的桥梁,承担实时获取设备数据的责任 AVCaptureDeviceInput 设备输入类.这个类用来表示输入数据的硬件设备,配置抽象设备的port AVCaptureMetadataOutput 输出类.这个支持二维码.条形码等图像数据的识别 AVCaptureVideoPrevie…

序言 前面我们已经调到过怎么制作二维码,在我们能够生成二维码之后,如何对二维码进行扫描呢? 在iOS7之前,大部分应用中使用的二维码扫描是第三方的扫描框架,例如ZXing或者ZBar.使用时集成麻烦,出错也不方便调试.在iOS7之后,苹果自身提供了二维码的扫描功能,从效率上来说,原生的二维码远高于这些第三方框架.本文讲解如何使用原生框架实现二维码扫描功能,并且进行扫描后的项目跳转. 扫描相关类 二维码扫描需要获取摄像头并读取照片信息,因此我们需要导入系统的AVFoundation框架,创建视频会…

这篇博客将会介绍二维码的生成. 由于没有什么东西值得长篇大论的,所以这里我就通过代码的实现介绍二维码. 第一部分 第一部分是二维码的简单生成没有其他重点介绍. 效果图 代码部分 // // ViewController.m // CX 二维码生成 // // Created by ma c on 16/4/12. // Copyright © 2016年 bjsxt. All rights reserved. // #import "ViewController.h" #import…

在 IOS7 以前,在IOS中实现二维码和条形码扫描,有两大开源组件 ZBar 与 ZXing. 总结下各自的缺点: ZBar在扫描的灵敏度上,和内存的使用上相对于ZXing上都是较优的,但是对于 "圆角二维码" 的扫描确很困难. ZXing 是 Google Code上的一个开源的条形码扫描库,是用java设计的,连Google Glass 都在使用的.但有人为了追求更高效率以及可移植性,出现了c++ port. Github上的Objectivc-C port,其实就是用OC代码封…