What is GCDGCD is an apple of the multi-threaded programming of a new set of abstractions based on the C language layer of API, combined with block simplifies the multi-threaded operation, so that we can be more safe and efficient threading
In Android common programming, handler is often used when asynchronous operations are performed and the returned results are processed. Usually our code will do that.
Public class Sampleactivity extends Activity {
Private Final
Delphi extracts all IO-related elements into the system.ioutils unit.It is convenient to use the Tpath method for path operation.Uses System.ioutilstpath.gettemppath//Temp Directorytpath.getcamerapath//Camera Catalogue
Since applications on the iPhone using Xamarin.ios be compiled to static code, it's not possible for use any facilities T Hat require code generation at runtime.These is the Xamarin.ios limitations compared to desktop Mono:Limited Generics
Nsoperation is a set of multithreaded implementations based on GCD, and like GCD, the life cycle of a thread is managed automatically by the system, without having the programmer manage it manually like Nsthread and Pthread. Compared to GCD, it is
Explain the tools I do: Mac OS X virtual machine 10.9.3 xcode6 Baidu ^-^ Reference IPhone30 Day Mastery: This program is the 13th day + 14th Day Collection This is the 13th day of the reference book program: The program is
Directory
Modify the icon and display text and overflow menu for Actionbar
tab and fragment loading layout
customizing themes with Style.xml
About the back key to return to the upper
Actionbar's Item
Current results
Singleton (Singleton)One, What is a singleton modeSingleton mode. The simple point is to design a class to have at most one instance at any time, and provide a global access point to the instance.Second, Why single CaseIn very many places in the
Then IOS uses the nib file (a) to come.There's a way in testnibview.m.-(ID) Initwithcoder: (nscoder *) Adecoder;This method comes from the Nscoding protocol. Nscoding protocol as below, there are two methods.@protocol nscoding-(void) Encodewithcoder:
If you want to save data or have data-related operations, it is best to do so in the OnPause function, because the OnDestroy function may not execute.
There is situations where the system would simply kill the activity ' s hosting process
one, about intentfirst look at what a intent contains:1 , Com ponent Name : decide which component to start2,action : Activity What actions should be done3,data: a Activity to a different Activity the data passed4,category:5,extras: Key-value pairs6,
Android Basics Getting Started tutorial--2.3.7 ProgressBar (progress bar)tags (space delimited): Android Basics Getting Started TutorialIntroduction to this section:This section brings you the ProgressBar (progress bar) in the Android Basic UI
Temporary need to do a webapp, according to the MyEclipse Default Web project did, and XML also did not change, local test no problem put on the server up.Test found, walk/HTTP/server Ip:8080/appname incredibly out of the page, Undeploy again deploy
Guo XiaoxingWeibo: Guo Xiaoxing's Sina WeiboEmail:[email protected]Blog: Http://blog.csdn.net/allenwellsGithub:https://github.com/allenwellsLet us show you how to use the Android NSD service, the article will finally give the project source Code.A
Alcatraz can help us expand the capabilities of Xcode and manage the Xcode plugin using a direct integration Approach.The specific measures are:1. Open the terminal2. Enter the following command line:mkdir -p ~/Library/Application\ Support/Developer/
The realization of the simple drawer effectFor the most part, most apps now basically have a drawer effect, such as qq/. so, today we will come to a simple implementation. of course, If you want your effect better or packaged into a tool that can be
The Android app is also Message-driven and, as a rationale, should provide a message loop Mechanism. In fact, Google referenced the Windows message loop mechanism, also implemented in the Android system message loop Mechanism.Android uses looper,
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