pch media

New PCH file--Demon Demon(This job is best done when the project is built. I like to set the PCH file when the project is new)1. (Command +n) new PCH file, or new file->sources->header2. Open build setting set the path of the prefix header to $ (srcroot)/project name/project name. pch3. Set the Precompile PreFix Header to Yes, otherwise the

What we're going to say today is that. pch This file I believe everyone is not unfamiliar, because if it is a novice development engineer will always be made to report errors.So we need to know. What is a PCH, plainly, is a precompiled file, before running the program, to the original files and other files to pre-compile, that is, the first place to compile.Then some people will ask, how it is used, why I u

directory of this document 1. Program configuration file Info.plist, global header file PCH 2. Application Object UIApplication Introduction 3.UIApplicationDelegate Introduction, program start-up process 4.UIWindow objects 5. Process of Program Interface display 6. Summary procedure to start the complete process -1. Program configuration file Info.plist, global header file PCH1. Program configuration file Info.plist

Just get started Xcode6 people, will always find before 6 in the "Application name-prefix.pch" This file to configure our global use of the header file, but Xcode6 no, they say, this thing sometimes will appear some inexplicable problems, in order to avoid the vast number of procedural ape dozens , as well as my high-end atmosphere on the grade of the Apple company do not want to be scolded all day, simply cancel the automatic generation, need to Zhu er their own to match, easy to use is their o

increased each time a new version is posted to the App StoreMain Storyboard file base name (nsmainstoryboardfile)-the name of the primary storyboardBundle identifier (cfbundleidentifier)-Unique identification of the project, deployed to the real machinePCH fileThe project's supporting files folder has a "project name-prefix.pch" file, which is also a header fileThe contents of the PCH header file can be shared and accessed by all other source files i

The contents of the PCH header file can be shared and accessed by all other source files in the project • Generally define some global macros in the PCH file • Add the following preprocessing directives to the PCH file and then use the log (...) in the project. To output the log information, the NSLog statement can be removed at once when the application is publi

Reference: http://blog.csdn.net/lwjok2007/article/details/46385595http://www.tuicool.com/articles/beURbehttp:// blog.csdn.net/gjt19910817/article/details/7200702 function: Write some common header files and macro definitions inside, just like a global variable, you can access the information inside the precompiled file in the required file. : Precompiled header file greatly increase the time of build, no precompiled header file, it is necessary to manually pour the @import manually into the head

PCH files store some shared data, which can be used directly in other files, thus reducing program input, such as storing macro definitions1. Create a new PCH file first2. Setup Completed3. Find the file path here4. Enter targets click Build Stttings, in the search box, enter prefix to see the prefix HeaderChange the precompile Prefix header to YES , and click the Prefix header to enter the input box and pa

When we create a new project, in the supporting files file will see a file ending with-prefix.pch, PCH full name is "precompiled Header", that is, precompiled header file, The files stored in the project some infrequently modified code, such as the usual framework header files, so that the purpose of improving the compiler speed. We know that when we modify a file code in a project, the compiler does not recompile all the files, but compiles the chang

[IOS development-69] the output function is customized in the pch file. This method is generally adopted by company projects to facilitate development, testing, and release, In the latest Xcode, no pch file exists by default, and you need to manually create the file. In fact, a pch file is similar to a macro. Its content can be accessed and shared by other fi

Functions of iOS-PCH files amp; how XCode creates Pch files: In the old version of XCode, A pch file is automatically created after a project is created. Usually, some frequently used framework header files or macro-defined URL addresses are written in the file, this definition can be used globally, but the pch file

A. PCH is a header file that loads global variables, which can be used to put variables, fields, or import fields that are frequently used in the entire project, and so on.The. PCH is added to the project in two main steps:1. Create a. pch fileSelect a folder, then create a file Popup page, select ios-"other-"-"PCH fil

Creation of a 1.PCH file(1) Command+n(2) Open new File window: ios->other->pch file, creating a PCHConfiguration of 2.PCH files(1) In the project targets inside building setting search prefix Header(2) then double-click on the right side of the Prefix header below the precompile Prefix header to add the project path to the PC