Mobile Develop

One: What is Helios?Helios is a high-performance socket communication middleware, written in C #. The development of Helios is inspired by Netty and uses a non-blocking event-driven model architecture to achieve high concurrency and high throughput.

First, to understand several related classes 1, nsnotificationThis class can be understood as a message object with three member variables.This member variable is a unique identifier for this message object and is used to identify the message object.

In Apple's operating system platform, GCD makes multithreaded programming so elegant and natural.In the traditional multi-threaded programming, the first is to write the thread processing loop, and then the event queue, message queue, as well as the

1. Business Analytic ApplicationsData AnalyticsAlso referred to as ' business Analytics ' or ' business Intelligence 'Although basic reporting capabilities has been built into ERP systems since their inception, there is increasing interest In making

1. Relative Position:GetLeft (), GetRight (), GetTop (), Getbottom ()In Android, you can put left equivalent to the x-axis value, top equivalent to the y-axis value, through the two values of the Android system can know the view of the drawing

iOS kanji to pinyin first letter//get pinyin Initials (incoming kanji string, return uppercase Pinyin first letter)-(NSString *) Firstcharactor: (NSString *) astring{//turns into a mutable stringNsmutablestring *str =[nsmutablestring

It is a specially processed PNG image that can specify which areas can be stretched and which areas are not.So what is the actual effect of the Nine-patch picture? Let's take a look at it with an example. For example, there is a picture of a bubble

First, to start the service and pass parameter pass parameter, only need to pass in the data in the intent that StartService starts, can receive the parameter in the Onstartcommand function by reading the content of intent of the initial parameter

Array creation, initialization Create an array variable, arr, and try to create an indexed array/** * Without the initial value of the creation. Give value after creation * Note: The subscript must be an integer */ $arr=Array();$arr[0] =' Boss

Androidmanifest Registering for an event Intent-filter in and Indicates that Backgrounddemo is the main activity of the project, which is the first thing to start the Android

1.Universal LinkUnderstand that Apple's official support for Deeplink is fine.2. Launch the app by clicking on the HTTP linkWeb?ios application in support of universal link, when users click on the characteristics of the link will start their own

The problem recurs: because of the work problem, need to use the simulator, and then created the simulator after a long waiting journey, two or three minutes later Win8 blue screen, restart, again open, still blue screens, so do not toss the

As an Android app developer, you have to face an awkward situation where your hard-to-develop apps can be easily recompiled by others.Google seems to have found the problem, starting with SDK2.3 we can see a Proguard folder under Android-sdk-windows\

Check if the package is installed because Nagios needs to rely on these packages to provide services [[email protected] nagios]# rpm -q gcc glibc  Glibc-common gd gd-devel xinetd openssl-devel[[email protected] nagios] #yum

Prerequisites:1. Install the Git client download link2 a GitHub account(assuming you already have some git basics, if not at all, go to other bonus learning) Androidstudio Project released to GitHub1. Create a new project in Androidstudio

Panda Pig • Patty original or translated works. Welcome reprint, Reprint please indicate the source.If you feel that the writing is not good please tell me, if you feel good please support a lot of praise. Thank you! Hopy;) Now let's take a

How iOS creates a video thumbnail image//writes the complete picture and the thumbnail image to the Temp folder      nsdata *pngimage =  uiimagepngrepresentation (thumbnail) ;      if  ([pngimage writetofile:[nsstring stringwithformat:@

The debut of Android is now 6 years old, on the HTC Dream Phone, published in 2008. Perhaps no one thought that at the end of 2010 it would be the first operating system for a smartphone platform. This, of course, thanks to Google's efforts and

Http://www.cnblogs.com/csonezp/p/5065624.htmlRecent projects have encountered a problem, a interface is Fragment+recyclerview,b interface with a edittext, and will automatically get focus pop-up soft keyboard. From the A interface into the B

Appium Environment Construction has been written in the blogHttp://www.cnblogs.com/feimaoyuzhubaobao/p/5057832.htmlThen this blog mainly introduces the Java version of the Appium starter demo. Before starting the demo, the Android emulator to