callback interface

Functions of the callback function 1. What is callback? There are always some interfaces between software modules. In terms of calling methods, they can be divided into three types: Synchronous call, callback and asynchronous call. Synchronous call

  Notification Method Simple Description Comment Direct Message Postmessage ()Postthreadmessage () Send a message to a window or thread No matter when you execute it. Sendmessage ()

From: http://blog.163.com/william_djj@126/blog/static/351665012009324114710982/   1. What is callback? There are always some interfaces between software modules. In terms of calling methods, they can be divided into three types: Synchronous call,

To achieve the Android phone by scanning business cards, get business card information, you can use the pulse-provided Third-party SDK, that is, the Maketion Scancard SDK, Pulse-seeking cloud business card recognition services. Their official

Journeywork State Technical Department-Chen Wenshu Baidu map of Baidu Eagle Eye trajectory useTake the takeaway delivery for example, the distribution staff from the order to upload the driving trajectory, the user can view the travel track

Original: http://vckbase.com/index.php/wv/1244.htmlFirst, prefaceThe runtime of my COM component generates a window that I need to notify the caller when the user double-clicks the window;My COM component uses threads to download a file on the

Please refer to the textbook to fully understand and complete the section of this chapter ... Copy the engineering ch21 and rename the project catalog to ch22. This chapter will create a user interface that adapts to tablet devices, allowing users

Android event processing:Listener-based and callback-based.A listener is used to bind a specific event listener to the android interface component. It mainly handles some specific events.Based on callback, the android component-specific callback

Preface:On WCF -5: Duplex Communication in WCF Message Exchange Mode (Duplex) in the blog post, I explained a scenario for the duplex Communication Service, the subscription and release model, which , I'll explain how a WCF client creates a

Java callback function mechanismReference to some of the online information, the following also made some summary for beginners to learn.I. OverviewThere is always a certain interface between software modules, which can be divided into three

Using callbacks to achieve extensibility Use callback to achieve scalability Let's now consider another use of "inversion of control" to parameterize a single operation, while moving control and error handling into a framework. strictly speaking,

SummaryThis article describes how fragment can interoperate through activity when there are multiple fragment in an activity in Android.SourceSource code address is: http://download.csdn.net/detail/logicteamleader/8931199The source code is written

In the previous article, we analyzed the creation process of the running context of the Android application window. It follows that each activity component has an associated Contextimpl object, and it also has a window object associated with it that

Http://developer.android.com/training/wearables/data-layer/events.htmlThe following are my notes when I study the official development documents, mainly translation, and in the middle will insert some of their own summary and research, hoping to

There is always a certain interface between modules, which can be divided into three categories: synchronous invocation, callback, and asynchronous invocation. Synchronous invocation is a kind of blocking call, which is also often used in writing

Asynchronous callback of the IP query system, ip Query System callback 1 package com. lxj. demo; 2 3 import java. io. bufferedReader; 4 import java. io. IOException; 5 import java. io. inputStreamReader; 6 import java.net. malformedURLException; 7

  Note: surfaceview does have the onDraw method, but you will not call surfaceview yourself !!! The ondraw () or draw () in my code is a method defined by myself... Keep calling in the thread. Be sure to pay attention to it !! Previously, we made

We talked about common functions related to fragment, since fragment is called "small activity", now let's talk about how fragment communicates with Acitivity. If you do not know the last article, you can look again. Portals.fragment communicates

In the previous article, we analyzed the creation process of the runtime Context Environment in the Android Application Window. It can be seen that each activity component has an associated contextimpl object, and it also associates with a window

Reprinted please indicate the address http://blog.csdn.net/xiaanming/article/details/9750689 In Android, activity is mainly responsible for displaying front-end pages, and service is mainly responsible for tasks that require long-term running.