1.创建一个用于管理demo project和sdk project的workspace.
xcode-File-New-Workspace -- MySDKDev.xcworkspace
2.创建sdk project, 选择framework project -- MySDK.xcodeproj
3.创建demo project, 选择普通app project -- MySDKDemo.xcodeproj
4.打开MySDKDev.xcworkspace, 把MySDK.xcodeproj和MySDKDemo.xcodeproj拉到MySDKDev.xcworkspace中.
5.点MySDKDemo工程，MySDKDemo taret-General-Linked Frameworks and Libraies-添加MySDK.framework
6.在MySDK中，添加要添加的文件，把需要暴露的文件，在Build Phases-Headers中，移到public中
配置Universal target，编程出真机以及模拟器都可以用的framework
1.选择MySDK工程，添加target，选择Cross-platform -- Aggregate -- MySDK-Universal
2.选择MySDK-Universal target，Build Phases -- Target Dependecies -- 添加MySDK.framework
3.添加Run Script，填入 '../scripts/build-universal-framework.sh'
4.到workspace目录，添加scripts文件夹，添加build-universal-framework.sh文件
UNIVERSAL_OUTPUTFOLDER=../build/
# 创建输出目录，并删除之前的framework文件 mkdir -p "${UNIVERSAL_OUTPUTFOLDER}" rm -rf "${UNIVERSAL_OUTPUTFOLDER}/${PROJECT_NAME}.framework"
# 分别编译模拟器和真机的Framework
xcodebuild -target "${PROJECT_NAME}" ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphoneos BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build
xcodebuild -target "${PROJECT_NAME}" ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphonesimulator BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build
# 拷贝framework到univer目录
cp -R "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${PROJECT_NAME}.framework" "${UNIVERSAL_OUTPUTFOLDER}/"
# 合并framework，输出最终的framework到build目录
lipo -create -output"${UNIVERSAL_OUTPUTFOLDER}/${PROJECT_NAME}.framework/${PROJECT_NAME}"
"${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${PROJECT_NAME}.framework/${PROJECT_NAME}"
"${BUILD_DIR}/${CONFIGURATION}-iphoneos/${PROJECT_NAME}.framework/${PROJECT_NAME}"
5.回到xcode，选择MySDK-Universal，Commond+B，编译工程，在workspace目录中，会生成build文件夹，里
面的MySDK.framework就是支持真机以及模拟器的framework了
