Xcode工程文件 project.pbxproj小结。转载

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转载最新推荐文章于 2026-09-07 13:13:57 发布 3.6k 阅读 AI 写同款· GEO 优化 ›

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源地址： http://www.jianshu.com/p/e82ec6a56fc2

Xcode工程文件project.pbxproj小结

简介

project.pbxproj 文件被包含于 Xcode 工程文件 *.xcodeproj 之中，存储着 Xcode 工程的各项配置参数。它本质上是一种旧风格的 Property List 文件，历史可追溯到 NeXT 的 OpenStep。由于有Xcode工具的存在，我们一般不需要与pbxproj直接打交道，通过General、Build Settungs或者Info等面板，就可以完成项目工程配置信息的修改。
一般格式如下：
数组用小括号括起来并用逗号隔开元素；字典用大括号括起来并用分号隔开键值对，键值之间用等号连接；二进制数据用尖括号括起来

接下来我们就依据一个具体的project.pbxproj文件来看看文件的具体内容；
首先使用Xcode新建一个项目文件，然后找到工程文件*.xcodeproj 邮件显示包内容就可以看到project.pbxproj文件，使用熟悉的编辑器打开，可以看到一些貌似混乱却又组织严密的内容。

文件的组织规则

对于NeXTSTEP格式的Property List 文件来说，整个的project.pbxproj文件就是一个字典，里面最外层有5个键值对，key分别为：

archiveVersion  
classes  
objectVersion  
objects   
rootObject

其中重要的 Key 是 objects 和 rootObject。其他字段目前看来是固定的：

archiveVersion = 1;
classes = {
};
objectVersion = 46;

上面说到这个文件看似混乱，实质上却是组织清晰，最好的方法就是顺着 rootObject 的各个属性对应的 UUID 在 objects 中找到对应的对象，然后一层层看下去。这样整个文件的配置信息存放方式就慢慢摸清了（rootObject就好像一个入口函数），具体的配置实现是在 objects这个域里面的，里面每一项的又是一个字典，key是UUID，Value 依然是个字典。下面可以看到rootObject对应的value也可以在objects中找到具体的值。objects 中的键值对被分成了若干个 section，虽然 section 的顺序是 Xcode 私有 API 钦定的，但每个 section 内部的键值对会根据 Key 的字典序排列，以此增加可读性。
此外，这里还要补充一下：
project.pbxproj文件使用UUID 作为交叉引用的索引，保证每个配置信息对象的唯一性。因为 UUID 根据机器硬件和时间戳生成，避免了多人在同一时间段操作修改工程文件带来的问题。也就是说工程中每项配置对象都有个唯一的 UUID，然后其他配置对象想引用某个配置对象直接使用它的 UUID 即可。这就跟我们编程时使用指针指向某个对象的地址一样，其他对象的属性想引用它，只需要给属性传个指针地址就行了。

下面我就从rootObject开始简单的走一遍，大概了解一下此文件的配置方式。

rootObject

rootObject = 662A377C1DB7D8B00038B7DB /* Project object */;

从注释上就可以看出指向一个UUID为662A377C1DB7D8B00038B7DB的Project object字典

Project object

/* Begin PBXProject section */
    662A377C1DB7D8B00038B7DB /* Project object */ = {
        isa = PBXProject;
        attributes = {
            LastUpgradeCheck = 0800;
            ORGANIZATIONNAME = Apress;
            TargetAttributes = {
                662A37831DB7D8B00038B7DB = {
                    CreatedOnToolsVersion = 8.0;
                    ProvisioningStyle = Automatic;
                };
                662A379C1DB7D8B00038B7DB = {
                    CreatedOnToolsVersion = 8.0;
                    ProvisioningStyle = Automatic;
                    TestTargetID = 662A37831DB7D8B00038B7DB;
                };
                662A37A71DB7D8B00038B7DB = {
                    CreatedOnToolsVersion = 8.0;
                    ProvisioningStyle = Automatic;
                    TestTargetID = 662A37831DB7D8B00038B7DB;
                };
            };
        };
        buildConfigurationList = 662A377F1DB7D8B00038B7DB /* Build configuration list for PBXProject "HelloWorld" */;
        compatibilityVersion = "Xcode 3.2";
        developmentRegion = English;
        hasScannedForEncodings = 0;
        knownRegions = (
            en,
            Base,
        );
        mainGroup = 662A377B1DB7D8B00038B7DB;
        productRefGroup = 662A37851DB7D8B00038B7DB /* Products */;
        projectDirPath = "";
        projectRoot = "";
        targets = (
            662A37831DB7D8B00038B7DB /* HelloWorld */,
            662A379C1DB7D8B00038B7DB /* HelloWorldTests */,
            662A37A71DB7D8B00038B7DB /* HelloWorldUITests */,
        );
    };
/* End PBXProject section */

PBXProject顾名思义就是工程，对应构建可执行的二进制目标程序或库，里面包含了编译工程所需的全部信息。
1、isa 可以把每个value看做一个对象，可以发现每一个value都有一个isa字段，代表value的类型。
2、attributes 属性，包含一些编译器的基本信息，版本，以及项目中的target，每一个target一个UUID其中，Xcode自动创建的项目里面有三个target一个就是所要编译的APP主target，其余两个为test Target，可以看到其余两个target中有一个字段TestTargetID指向主target，可以理解为依赖相关吧。
3、buildConfigurationList 配置列表指向一个配置字典 XCConfigurationList 类型类型（稍后讲）
4、compatibilityVersion 应该是兼容版本目前看来是 Xcode 3.2
5、developmentRegion 语言版本，English英语
6、hasScannedForEncodings 是否已经扫描了文件编码信息
7、knownRegions 不同区域的本地资源文件列表
8、mainGroup Xcode的文件组织形式，可以理解为文件层次 PBXGroup 类型
9、productRefGroup 编译后的输出文件 PBXGroup 类型
10、projectDirPath，projectRoot 项目路径和项目的根目录目前为空
11、targets 项目下的三个target对象 PBXNativeTarget类型

从上到下，我们来看一下所用的类型。

XCConfigurationList

/* Begin XCConfigurationList section */
    662A377F1DB7D8B00038B7DB /* Build configuration list for PBXProject "HelloWorld" */ = {
        isa = XCConfigurationList;
        buildConfigurations = (
            662A37AF1DB7D8B00038B7DB /* Debug */,
            662A37B01DB7D8B00038B7DB /* Release */,
        );
        defaultConfigurationIsVisible = 0;
        defaultConfigurationName = Release;
    };
    662A37B11DB7D8B00038B7DB /* Build configuration list for PBXNativeTarget "HelloWorld" */ = {
        isa = XCConfigurationList;
        buildConfigurations = (
            662A37B21DB7D8B00038B7DB /* Debug */,
            662A37B31DB7D8B00038B7DB /* Release */,
        );
        defaultConfigurationIsVisible = 0;
    };
    662A37B41DB7D8B00038B7DB /* Build configuration list for PBXNativeTarget "HelloWorldTests" */ = {
        isa = XCConfigurationList;
        buildConfigurations = (
            662A37B51DB7D8B00038B7DB /* Debug */,
            662A37B61DB7D8B00038B7DB /* Release */,
        );
        defaultConfigurationIsVisible = 0;
    };
    662A37B71DB7D8B00038B7DB /* Build configuration list for PBXNativeTarget "HelloWorldUITests" */ = {
        isa = XCConfigurationList;
        buildConfigurations = (
            662A37B81DB7D8B00038B7DB /* Debug */,
            662A37B91DB7D8B00038B7DB /* Release */,
        );
        defaultConfigurationIsVisible = 0;
    };
/* End XCConfigurationList section */

XCConfigurationList是一个构建配置相关元素的列表，里面有一个项目文件（HelloWorld），三个target（HelloWorld、HelloWorldTests和HelloWorldUITests）对应于你在Xcode界面中看到的这样，如图，每一个都有相对应的配置属性buildConfigurations，而每个配置属性都有两个的版本（Debug和Release）
那Debug和Release又对应什么呢？是XCBuildConfiguration：

/* Begin XCBuildConfiguration section */
    662A37AF1DB7D8B00038B7DB /* Debug */ = {
        isa = XCBuildConfiguration;
        buildSettings = {
            ALWAYS_SEARCH_USER_PATHS = NO;
            CLANG_ANALYZER_NONNULL = YES;
            CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
            CLANG_CXX_LIBRARY = "libc++";
            CLANG_ENABLE_MODULES = YES;
            CLANG_ENABLE_OBJC_ARC = YES;
            CLANG_WARN_BOOL_CONVERSION = YES;
            CLANG_WARN_CONSTANT_CONVERSION = YES;
            CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
            CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
            CLANG_WARN_EMPTY_BODY = YES;
            CLANG_WARN_ENUM_CONVERSION = YES;
            CLANG_WARN_INFINITE_RECURSION = YES;
            CLANG_WARN_INT_CONVERSION = YES;
            CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
            CLANG_WARN_SUSPICIOUS_MOVES = YES;
            CLANG_WARN_UNREACHABLE_CODE = YES;
            CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
            "CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
            COPY_PHASE_STRIP = NO;
            DEBUG_INFORMATION_FORMAT = dwarf;
            ENABLE_STRICT_OBJC_MSGSEND = YES;
            ENABLE_TESTABILITY = YES;
            GCC_C_LANGUAGE_STANDARD = gnu99;
            GCC_DYNAMIC_NO_PIC = NO;
            GCC_NO_COMMON_BLOCKS = YES;
            GCC_OPTIMIZATION_LEVEL = 0;
            GCC_PREPROCESSOR_DEFINITIONS = (
                "DEBUG=1",
                "$(inherited)",
            );
            GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
            GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
            GCC_WARN_UNDECLARED_SELECTOR = YES;
            GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
            GCC_WARN_UNUSED_FUNCTION = YES;
            GCC_WARN_UNUSED_VARIABLE = YES;
            IPHONEOS_DEPLOYMENT_TARGET = 10.0;
            MTL_ENABLE_DEBUG_INFO = YES;
            ONLY_ACTIVE_ARCH = YES;
            SDKROOT = iphoneos;
        };
        name = Debug;
    };
    662A37B01DB7D8B00038B7DB /* Release */ = {
        isa = XCBuildConfiguration;
        buildSettings = {
            ALWAYS_SEARCH_USER_PATHS = NO;
            CLANG_ANALYZER_NONNULL = YES;
            CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
            CLANG_CXX_LIBRARY = "libc++";
            CLANG_ENABLE_MODULES = YES;
            CLANG_ENABLE_OBJC_ARC = YES;
            CLANG_WARN_BOOL_CONVERSION = YES;
            CLANG_WARN_CONSTANT_CONVERSION = YES;
            ·
            ·
            ·
            IPHONEOS_DEPLOYMENT_TARGET = 10.0;
            MTL_ENABLE_DEBUG_INFO = NO;
            SDKROOT = iphoneos;
            VALIDATE_PRODUCT = YES;
        };
        name = Release;
    };
      ·
      ·
      ·
/* End XCBuildConfiguration section */

XCBuildConfiguration构建具体的配置元素，也就是Xcode的Build Setting面板中所涉及的选项。至于每个字段所代表的含义可再深入研究。

PBXGroup

/* Begin PBXGroup section */
    662A377B1DB7D8B00038B7DB = {
        isa = PBXGroup;
        children = (
            662A37861DB7D8B00038B7DB /* HelloWorld */,
            662A37A01DB7D8B00038B7DB /* HelloWorldTests */,
            662A37AB1DB7D8B00038B7DB /* HelloWorldUITests */,
            662A37851DB7D8B00038B7DB /* Products */,
        );
        sourceTree = "<group>";
    };
    662A37851DB7D8B00038B7DB /* Products */ = {
        isa = PBXGroup;
        children = (
            662A37841DB7D8B00038B7DB /* HelloWorld.app */,
            662A379D1DB7D8B00038B7DB /* HelloWorldTests.xctest */,
            662A37A81DB7D8B00038B7DB /* HelloWorldUITests.xctest */,
        );
        name = Products;
        sourceTree = "<group>";
    };
    662A37861DB7D8B00038B7DB /* HelloWorld */ = {
        isa = PBXGroup;
        children = (
            662A378A1DB7D8B00038B7DB /* AppDelegate.h */,
            662A378B1DB7D8B00038B7DB /* AppDelegate.m */,
            662A378D1DB7D8B00038B7DB /* ViewController.h */,
            662A378E1DB7D8B00038B7DB /* ViewController.m */,
            662A37901DB7D8B00038B7DB /* Main.storyboard */,
            662A37931DB7D8B00038B7DB /* Assets.xcassets */,
            662A37951DB7D8B00038B7DB /* LaunchScreen.storyboard */,
            662A37981DB7D8B00038B7DB /* Info.plist */,
            662A37871DB7D8B00038B7DB /* Supporting Files */,
        );
        path = HelloWorld;
        sourceTree = "<group>";
    };
    662A37871DB7D8B00038B7DB /* Supporting Files */ = {
        isa = PBXGroup;
        children = (
            662A37881DB7D8B00038B7DB /* main.m */,
        );
        name = "Supporting Files";
        sourceTree = "<group>";
    };
    662A37A01DB7D8B00038B7DB /* HelloWorldTests */ = {
        isa = PBXGroup;
        children = (
            662A37A11DB7D8B00038B7DB /* HelloWorldTests.m */,
            662A37A31DB7D8B00038B7DB /* Info.plist */,
        );
        path = HelloWorldTests;
        sourceTree = "<group>";
    };
    662A37AB1DB7D8B00038B7DB /* HelloWorldUITests */ = {
        isa = PBXGroup;
        children = (
            662A37AC1DB7D8B00038B7DB /* HelloWorldUITests.m */,
            662A37AE1DB7D8B00038B7DB /* Info.plist */,
        );
        path = HelloWorldUITests;
        sourceTree = "<group>";
    };
/* End PBXGroup section */

PBXGroup 文件组织形式文件的组织结构，可以嵌套，可以看到子文件列表放在key为children的字典中value是一个数组，如果数组中的值指向的是一个文件夹类型的，则再生成一个字典，一直到底指向最初的文件，PBXFileReference类型

PBXFileReference

/* Begin PBXFileReference section */
    662A37841DB7D8B00038B7DB /* HelloWorld.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = HelloWorld.app; sourceTree = BUILT_PRODUCTS_DIR; };
    662A37881DB7D8B00038B7DB /* main.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = main.m; sourceTree = "<group>"; };
    662A378A1DB7D8B00038B7DB /* AppDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
    662A378B1DB7D8B00038B7DB /* AppDelegate.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
    ·
    ·
    ·
    662A37A81DB7D8B00038B7DB /* HelloWorldUITests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = HelloWorldUITests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
    662A37AC1DB7D8B00038B7DB /* HelloWorldUITests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = HelloWorldUITests.m; sourceTree = "<group>"; };
    662A37AE1DB7D8B00038B7DB /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
/* End PBXFileReference section */

PBXFileReference 项目所引用的每一个外部文件，比如源代码文件、资源文件、库文件、生成目标文件等，每一个外部文件都可以在这里找到，也就是在Xcode的文件导航栏所看到的文件组织形式，如图3。

productRefGroup

类似于mainGroup

PBXNativeTarget

/* Begin PBXNativeTarget section */
    662A37831DB7D8B00038B7DB /* HelloWorld */ = {
        isa = PBXNativeTarget;
        buildConfigurationList = 662A37B11DB7D8B00038B7DB /* Build configuration list for PBXNativeTarget "HelloWorld" */;
        buildPhases = (
            662A37801DB7D8B00038B7DB /* Sources */,
            662A37811DB7D8B00038B7DB /* Frameworks */,
            662A37821DB7D8B00038B7DB /* Resources */,
        );
        buildRules = (
        );
        dependencies = (
        );
        name = HelloWorld;
        productName = HelloWorld;
        productReference = 662A37841DB7D8B00038B7DB /* HelloWorld.app */;
        productType = "com.apple.product-type.application";
    };
    662A379C1DB7D8B00038B7DB /* HelloWorldTests */ = {
        isa = PBXNativeTarget;
        buildConfigurationList = 662A37B41DB7D8B00038B7DB /* Build configuration list for PBXNativeTarget "HelloWorldTests" */;
        buildPhases = (
            662A37991DB7D8B00038B7DB /* Sources */,
            662A379A1DB7D8B00038B7DB /* Frameworks */,
            662A379B1DB7D8B00038B7DB /* Resources */,
        );
        buildRules = (
        );
        dependencies = (
            662A379F1DB7D8B00038B7DB /* PBXTargetDependency */,
        );
        name = HelloWorldTests;
        productName = HelloWorldTests;
        productReference = 662A379D1DB7D8B00038B7DB /* HelloWorldTests.xctest */;
        productType = "com.apple.product-type.bundle.unit-test";
    };
    662A37A71DB7D8B00038B7DB /* HelloWorldUITests */ = {
        isa = PBXNativeTarget;
        buildConfigurationList = 662A37B71DB7D8B00038B7DB /* Build configuration list for PBXNativeTarget "HelloWorldUITests" */;
        buildPhases = (
            662A37A41DB7D8B00038B7DB /* Sources */,
            662A37A51DB7D8B00038B7DB /* Frameworks */,
            662A37A61DB7D8B00038B7DB /* Resources */,
        );
        buildRules = (
        );
        dependencies = (
            662A37AA1DB7D8B00038B7DB /* PBXTargetDependency */,
        );
        name = HelloWorldUITests;
        productName = HelloWorldUITests;
        productReference = 662A37A81DB7D8B00038B7DB /* HelloWorldUITests.xctest */;
        productType = "com.apple.product-type.bundle.ui-testing";
    };
  /* End PBXNativeTarget section */

PBXNativeTarget，对应于生成的可执行二进制程序或库文件的本地构建目标对象，也就是Xcode我们看到的这三个target目标对象。里面的主要内容是：
1、buildConfigurationList 这个我们在讲述PBXProject时已经介绍过，是一个配置相关元素相关的列表。
2、buildPhases 构建阶段所涉及的源文件（PBXSourcesBuildPhase类型）、框架（PBXFrameworksBuildPhase类型）和资源（PBXResourcesBuildPhase）以数组形式组织。
3、buildRules 指定了不同文件类型该如何编译
4、dependencies 列出了在Xcode build phase tab中列出的target依赖项
5、productReference 目标文件（PBXFileReference）

PBXSourcesBuildPhase

/* Begin PBXSourcesBuildPhase section */
    662A37801DB7D8B00038B7DB /* Sources */ = {
        isa = PBXSourcesBuildPhase;
        buildActionMask = 2147483647;
        files = (
            662A378F1DB7D8B00038B7DB /* ViewController.m in Sources */,
            662A378C1DB7D8B00038B7DB /* AppDelegate.m in Sources */,
            662A37891DB7D8B00038B7DB /* main.m in Sources */,
        );
        runOnlyForDeploymentPostprocessing = 0;
    };
    662A37991DB7D8B00038B7DB /* Sources */ = {
        isa = PBXSourcesBuildPhase;
        buildActionMask = 2147483647;
        files = (
            662A37A21DB7D8B00038B7DB /* HelloWorldTests.m in Sources */,
        );
        runOnlyForDeploymentPostprocessing = 0;
    };
    662A37A41DB7D8B00038B7DB /* Sources */ = {
        isa = PBXSourcesBuildPhase;
        buildActionMask = 2147483647;
        files = (
            662A37AD1DB7D8B00038B7DB /* HelloWorldUITests.m in Sources */,
        );
        runOnlyForDeploymentPostprocessing = 0;
    };
/* End PBXSourcesBuildPhase section */

PBXSourcesBuildPhase 代表构建阶段需要复制的资源文件文件组织在key为files的value中的数组列表里，每个元素为PBXBuildFile类型。

PBXBuildFile

 /* Begin PBXBuildFile section */
    662A37891DB7D8B00038B7DB /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 662A37881DB7D8B00038B7DB /* main.m */; };
    662A378C1DB7D8B00038B7DB /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = 662A378B1DB7D8B00038B7DB /* AppDelegate.m */; };
    662A378F1DB7D8B00038B7DB /* ViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 662A378E1DB7D8B00038B7DB /* ViewController.m */; };
    662A37921DB7D8B00038B7DB /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 662A37901DB7D8B00038B7DB /* Main.storyboard */; };
    662A37941DB7D8B00038B7DB /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 662A37931DB7D8B00038B7DB /* Assets.xcassets */; };
    662A37971DB7D8B00038B7DB /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 662A37951DB7D8B00038B7DB /* LaunchScreen.storyboard */; };
    662A37A21DB7D8B00038B7DB /* HelloWorldTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 662A37A11DB7D8B00038B7DB /* HelloWorldTests.m */; };
    662A37AD1DB7D8B00038B7DB /* HelloWorldUITests.m in Sources */ = {isa = PBXBuildFile; fileRef = 662A37AC1DB7D8B00038B7DB /* HelloWorldUITests.m */; };
/* End PBXBuildFile section */

PBXBuildFile 代表文件元素，被PBXBuildPhase等作为文件包含或被引用的资源，其实里面fileRef指向最终的文件PBXFileReference。

PBXFrameworksBuildPhase

/* Begin PBXFrameworksBuildPhase section */
    662A37811DB7D8B00038B7DB /* Frameworks */ = {
        isa = PBXFrameworksBuildPhase;
        buildActionMask = 2147483647;
        files = (
        );
        runOnlyForDeploymentPostprocessing = 0;
    };
    662A379A1DB7D8B00038B7DB /* Frameworks */ = {
        isa = PBXFrameworksBuildPhase;
        buildActionMask = 2147483647;
        files = (
        );
        runOnlyForDeploymentPostprocessing = 0;
    };
    662A37A51DB7D8B00038B7DB /* Frameworks */ = {
        isa = PBXFrameworksBuildPhase;
        buildActionMask = 2147483647;
        files = (
        );
        runOnlyForDeploymentPostprocessing = 0;
    };
/* End PBXFrameworksBuildPhase section */

PBXFrameworksBuildPhase用于framewrok构建的链接阶段

PBXResourcesBuildPhase

/* Begin PBXResourcesBuildPhase section */
    662A37821DB7D8B00038B7DB /* Resources */ = {
        isa = PBXResourcesBuildPhase;
        buildActionMask = 2147483647;
        files = (
            662A37971DB7D8B00038B7DB /* LaunchScreen.storyboard in Resources */,
            662A37941DB7D8B00038B7DB /* Assets.xcassets in Resources */,
            662A37921DB7D8B00038B7DB /* Main.storyboard in Resources */,
        );
        runOnlyForDeploymentPostprocessing = 0;
    };
    662A379B1DB7D8B00038B7DB /* Resources */ = {
        isa = PBXResourcesBuildPhase;
        buildActionMask = 2147483647;
        files = (
        );
        runOnlyForDeploymentPostprocessing = 0;
    };
    662A37A61DB7D8B00038B7DB /* Resources */ = {
        isa = PBXResourcesBuildPhase;
        buildActionMask = 2147483647;
        files = (
        );
        runOnlyForDeploymentPostprocessing = 0;
    };
  /* End PBXResourcesBuildPhase section */

PBXResourcesBuildPhase 构建阶段需要复制的资源文件，包括xib文件、故事板（storyboard）、图片和plist文件等其他资源文件。链接至PBXBuildFile文件

到这里，整个project.pbxproj 文件基本走了一遍，我们也对整个文件的组织结构有了一个初步的了解，里面有些字段的含义也许不是很清楚，但是并不影响我们对文件结构的理解。如果想看更深的一步了解，可以参看这里。
Cocoapods正是通过它的组件Xcodeproj操作project.pbxproj文件来对工程结构进行修改。
最后附上一张整体的流程图：