pch app ios

1. Click Info.plist Right-click->new file->other->pch file to create PCH filesThe file name is set to: Project Name-prefix-click Create, created successfully.2. Set the PCH file pathSelect item->targets->build settings-> Search in the search box for "Prefix"->apple LLVM 8.0-languagePrecompile Prefix header is set to Yes;Right-

IOS. pch When we create a new project, we will see a Prefix in the Supporting FIles file. the file ending with pch. pch is the "precompiled header", that is, the pre-compiled header file. Some codes that are not frequently modified in the project stored in the file, such as common framework header files, this aims to i

New company, took over the project even PCH files are not, each need to use the screen when the width of the high, are now written. Now that I've met you, just say the PCH thing.1.command+n, open the new File window: ios->other->pch file, create a PCH document;2. Search for

PCH file one of the important role is that you can write some macro variables, and macro variables are mainly to judge the device, judge the system version of these.You need to manually build the PCH file in Xcode6.(1) First set up a PCH file(2) Set, so that the PCH file can be used, that is, the

The 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 in the projectIn general, some global macros are defined in the PCH fileAdd the following preprocessing directives in the PCH file, and then use the log (...) in your projec

In the development process, we often use a lot of addresses, or the size of the screen, so we have to use these strings frequently, of course, we can set these strings as macros but the macro can only be accessed in this file, then we can set the global access to the file, We can add a file for a. pch1, first we create a class with the usual steps to create the same2. We have to make some adjustments after the creation.Find this place in the file, and then we double-click the hint in the picture

10. Use Xcode6 to configure the. pch file for iOS programming, People who have just started Xcode6 will always find that they used to "Application name-Prefix" before "6. the pch file is used to configure the header files we need globally, but xcode6 is gone. People say that this kind of stuff sometimes has some inexplicable problems. In order to avoid the abuse

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

[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 c

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

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

IOS xxx. pchInfo. plist and Prefix. pch File Location modification problems and solutions if you want to change Info. plist and Prefix. the actual path of the pch file, that is, the location of the actual file (not the Organization path in the Project). You need to modify the corresponding configuration in Build Settings. Otherwise, the project cannot find the co

The previous PCH for iOS was the system's own, and then Apple canceled the PCH, and I've been disgusted with the addition. I don't know if my brain is smoking recently. It was added. Do not like to add, because I want their code sent to others, other people can run anywhere, without changing the wrong warning.Reflection of a bit, because a lot of people are added

PCH can be used to store shared information, such as the width and height of a device's screen. Version number and so on common informationThe old version of Xcode automatically creates a PCH file for us, and the new version is not created automatically, if you need to create it yourself manuallyConstants can be defined inside after creation is completeHere is an example of screen sizeAs follows------------

How to use the. pch file in iOS, Pch can be used to store shared information, such as the width and height of the screen. Public information such as version number The old version of Xcode will automatically create the pch file for us. The new version is not automatically created at the beginning. You can manually cr

PCH can be used to store shared information, such as the width and height of a device's screen. Version number and so on common informationThe old version of Xcode automatically creates a PCH file for us, and the new version is not created automatically, if you need to create it yourself manuallyConstants can be defined inside after creation is completeHere is an example of screen sizeAs follows------------

PCH can be used to store shared information, such as the width and height of a device's screen. Version and so on common informationThe old version of Xcode will create the PCH file for us on its own initiative, and the new version number is not created on its own initiative. Suppose you need to use the ability to manually createCan define constants in the inside after creationHere is an example of screen s

First step: Create a new file find Othere in iOS click PCH file to click NextThe second step: Modify the file name is the current project name (usually the same name as the project name), tick targets, click Create createdStep three: Check the path copy in the red boxFourth step: Search for the prefix header and enter in the blanks after this option, or double-clickFifth Step: Enter $ (srcroot) in the box a

$ (srcroot)/prefixheader.pch Auto-fit PCH Address__weak __block typeof (self) weakself = self;__weak typeof (self) weakself = self;#define DN_DEBUG_LOG (FMT, ...){NSLog (@ "%s [line%d]" FMT), __pretty_function__, __line__, # #__VA_ARGS__);}Nsdictionary *ifs = [self fetchssidinfo];NSString *ssid = [[IFS objectforkey:@ "SSID"] lowercasestring];NSString *ssid =ifs[@ "SSID"];NSLog (@ "ifs--%@, WiFi device name--%@", Ifs,ssid);-(ID) fetchssidinfo {Nsarray