iOS开发记录（持续更新）

问题及解决办法

1. 问题描述：编译错误
   fatal error: lipo: can’t open input file: /Users/username/DerivedData/AppName/Build/Products/Debug-iphonesimulator/xxx.framework/xxx(No such file or directory)fatal error: lipo: can’t open input file: /Users/username/DerivedData/AppName/Build/Products/Debug-iphonesimulator/xxx.framework/xxx(No such file or directory)
Command PhaseScriptExecution failed with a nonzero exit code

   解决办法：选择模拟器编译一次，再选择真机编译一次。

2. 问题描述：编译错误
   ld: warning: ignoring file /Users/user_name/proj_path/framework/xxx.framework/xxx, missing required architecture x86_64 in file /Users/user_name/proj_path/framework/xxx.framework/xxx (2 slices)
Undefined symbols for architecture x86_64:
“OBJC_CLASS$_xxxxx”, referenced from:
objc-class-ref in xxViewController.o
“OBJC_CLASS$_xxxxxx”, referenced from:
objc-class-ref in xxViewController.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

   解决办法：在Project target里“Build Settings”的“Valid Architectures”添加“i386” ，去掉arm64,留下armv7,armv7s还有新添加的i386就可以了

   参考：https://blog.csdn.net/itolfn/article/details/47299339

3. 问题描述：编译错误
   fatal error: ‘xxx/xxx.h’ file not found
#import

   解决办法：重新引用第三方库
   

4. 问题描述：编译失败
   ld: framework not found xxx
clang: error: linker command failed with exit code 1 (use -v to see invocation)

   解决办法：除了网上的其他方法之外，在Finder中查找一下framework是否完整（有可能部分文件被git忽略了，没有上传到服务器）
   

5. 问题描述：添加 .scn 文件到 art.scnassets 编译失败
   Command CodeSign failed with a nonzero exit code
/scntool: -1: Could not load ModelIO.framework ((null))
/scntool: -1: Could not load SceneKit.framework ((null))
/scntool: -1: Could not load PhysicsKit.framework ((null))
/scntool: -1: Could not load Jet.framework ((null))
/scntool: -1: Could not load SpriteKit.framework ((null))


   解决办法：命令行进入工程目录，执行命令 xattr -rc .

   参考：https://stackoverflow.com/questions/37830758/code-signing-error-whenever-i-try-replacing-stock-files-in-new-scenekit-applicat/40846829