argo responder

Difference Between TCP and UDP:Message structure: UDP first defines the content of each byte of each protocol. The first byte number determines the content of the received hour, and then extracts data according to the predefined structure. TCP first

I have used the preparation of the server guard software for some time. It may take about 20 days. In the past few days, I basically did nothing else. I wrote this software. Fortunately, I finally wrote it, this is the first program I wrote that is

Because someone replied to me just nowArticleHe left his personal blog address and hoped that I would go there to see it. Then I was curious to see it. As a result, my computer gave me a pop-up window and all the junk websites came out! Everyone

Event delivery:the Responder ChainWhen you design your app, it's likely that's want to respond to events dynamically. For example, a-touch can occur in many different objects onscreen, and you had to decide which object you want to respond To a given event and understand how that object receives the event. When a user-generated event occurs, UIKit creates an event object containing the information needed to process the even T. Then it places the event

First, when an event response occurs, you must know who is responding to the event. In iOS, the responder chain responds to events, all event responses are subclasses of Uiresponder, and the responder chain is a hierarchy of different objects in which each object is given an opportunity to respond to event messages in turn. When an event occurs, the event is first sent to the first

represents handshake Packet, 01 for initiator send packet, 10 for responder send packet, 00 not legal value L TSE: Whether the package contains Timestamp-echo domains L TS: Whether the package contains timestamp domains L Tcr:time critical Reverse notification indicates that the sender is receiving the timecritical package from somewhere else L Tc:time critical Forward notification indicates that the sender sent the timecritical package The timestamp

Event delivery:the Responder ChainWe want to be able to dynamically respond to touch events in our app. For example, a touch may occur on the screen in different locations and on different components, we need to determine which component responds to this touch and how this component accepts touch events.When a user touches an event, Uikit creates an object that contains the event information that needs to be handled. The object is then placed in the c

IPSec Scenario Deployment The many parameters involved in IPSec are found in previous installments, and there are many flexible options in the deployment of a specific scenario, and this column is dedicated to the deployment of IPSec in several typical scenarios. I. General IPSec Scenarios The network environment shown in the figure above is the most basic of the IPSec scenarios: 1. The responder is a fixed public address regardless of the environme

: (UIView *) View: This method records the previous coordinate value, and the function return is also a cgpoint type of value, indicating the position of the touch in view, The position returned here is for the view's coordinate system. When the view argument passed in is empty, the time the touch point is returned to the location of the entire window. When the finger touches the screen, whether it's a single touch or multi-touch, the event starts until all the user's fingers leave the screen.

UIEvent object and places it in the event queue of the currently activated application. If the system interprets the device vibration as a motion event, the Objects representing the event will also be placed in the event queue of the application. Manage the application's single-piece UIApplication object to get an event from the top of the queue and dispatch it. Generally, it sends the event to the key window of the application-a window that accepts the focus of the user event-and then the UIWi

, cut, and paste operations in an application. Specific as follows: UIPasteboardclass provides an interface to the pasteboard. A pasteboard is a protected area that is used for data sharing within an application or across applications. This class provides a way to read and write data items on the Clipboard. UIMenuControllerclass to display an Edit menu on the top and bottom sides of the selected copy, Cut, and paste objects. Commands on the Edit menu can be copied, cut, pasted, sele

　　iOS Learning Note (2)-uiview User Incident ResponseUIView is responsible for responding to user events in addition to displaying content to users. This chapter focuses on the properties and methods associated with UIView user interaction.　　1. Interaction-related properties　　userinteractionenabled Default is yes, and if set to no it does not respond to user events and removes the current control from the event queue. That is, the view that sets the Userinterfaceenabled property interrupts the

invocation of the point value of each pass is a virtual transition. Position in the corresponding view coordinate system. What needs to be explained is the uiinterfaceenable of the view and the presence of gesture recognize images of the process. If the uiinterfaceenable is no, and the canceltouchinview of the gesture recognize is yes, then the process will not go on. If Uiinterfaceenable is no, super view does not hittest such a view. Gesture recognize's Canceltouchinview view does not hittest

OverviewThis article mainly analyzes the entire processing mechanism from the touch of our fingers to the Apple device to the final response event. Essentially, the entire process can be divided into two steps:Step 1: Find the target. Find the final recipient of the touch event in the iOS view hierarchy;Step 2: Incident response. Handle touch events based on the iOS responder chain (Responder Chain)looking

Step 1: Find the target. Find the final recipient of the touch event in the iOS view hierarchy;Step 2: Incident response. Handle touch events based on the iOS responder chain (Responder Chain)Looking for a targetThe two major weapons used in the search for target phase are UIView's hittest:withevent: and pointinside:withevent: Methods. The process of finding a target is also known as hit-testing. Let's take

features make it more comfortable for users to use an application because it allows people to experiment and interact without worrying about making mistakes. Touchablehighlight and touchable*The response system may be complex to use. So we provide an abstract touchable implementation for something that should be "lightly clicked". This uses the answering system and makes it easy to identify the tap interaction in a declarative way. Use Touchablehighlight anywhere in the network where you w

UIView is responsible for responding to user events in addition to displaying content to users. This chapter focuses on the properties and methods associated with UIView user interaction.1. Interaction-related propertiesuserinteractionenabled Default is yes, and if set to no it does not respond to user events and removes the current control from the event queue. That is, the view that sets the Userinterfaceenabled property interrupts the responder cha

1. Responder ObjectNot all objects in iOS can handle events, and only objects that inherit Uiresponder can receive and handle events, which we call "responder objects."UIApplication, Uiviewcontroller, and UIView inherit from Uiresponder, so they are both responder objects that can receive and handle events.2.UIRespondeUiresponder internally provides the following

completed, each time the change in the state of the finger corresponds to a stage in the process of event action. By began-moved-ended These phases of action (Touch) together constitute an event. There are corresponding methods in the event response object Uiresponder to handle the events of these phases separately. Touchesbegan:withevent: Touchesmoved:withevent: Touchesended:withevent: Touchescancelled:withevent: The following parameters correspond to Uitouchphasebega

Uiresponder IntroductionUiresponder This class defines a lot of classes for handling response and time processing. His subcategories are Uiapplication,uiview and UIWindow.There are two types of events in iOS: Touch events, and move events. The most primitive event handlers are,,, and touchesBegan:withEvent: touchesMoved:withEvent: touchesEnded:withEvent: touchesCancelled:withEvent:。 whenever a finger touches the screen or moves on the screen, dragging or even leaving the screen causes a Uievent