查看了CGPoint属性，也是使用的CGFloat，但就是会出错，如下图：
解决问题：
突然想到可以找QQ群问啊，于是找到了问题，是要在CGPoin中的X和Y轴各自计算就不会出错。
网友发来的帮助文档：CGPoint+Extensions.swift
标签：Xcode
Apple Mach-O Linker (ld) Error Group
在Mac使用的Xcode8.x版本，最后导出时报错：
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Apple Mach-O Linker (ld) Error Group clang: error: linker command failed with exit code 1 (use -v to see invocation) |
“_OBJC_CLASS_$_P31”, referenced from:
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Undefined symbols for architecture arm64: "_OBJC_CLASS_$_P31", referenced from: objc-class-ref in libStoreKit.a(StoreKitManager.o) (maybe you meant: _OBJC_CLASS_$_P31Unity) "_OBJC_CLASS_$_MFMailComposeViewController", referenced from: objc-class-ref in ISN_SocialGate.o ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation) |
就是这个总是，总是解决不掉，郁闷死了
clang: error: linker command failed with exit code 1 (use -v to see invocation)
这个问题，好像之前遇到过，没记录下来，晕。
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ld: library not found for -liPhone-lib clang: error: linker command failed with exit code 1 (use -v to see invocation) |
解决办法一：
在Build Settings /Library Search Paths中 Libraries 的一项修改为：$(PROJECT_DIR)/Libraries，其默认还有两个引号注意要去除。
解决办法二：
在左侧Libraries文件夹中的libiPhone-lib.a删除，然后在Finder中找到此项目的这个文件，再把它拖进相应的位置即可。
Undefined symbols for architecture armv7:
2017.05.08
上次打包还正常的，这次一打包居然出现这一堆总是来，郁闷。原本还准备打几个包测试没问题就发布个版本的，看来又得被耽搁了。报出的几个错误如下：
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Undefined symbols for architecture armv7: "__ISN_ResolveConflictingSavedGames", referenced from: _ISN_GameSaves__ISN_ResolveConflictingSavedGames_m1312 in Bulk_Assembly-CSharp_0.o (maybe you meant: _ISN_GameSaves__ISN_ResolveConflictingSavedGames_m1312) "__ISN_LoadSaveData", referenced from: _ISN_GameSaves__ISN_LoadSaveData_m1313 in Bulk_Assembly-CSharp_0.o (maybe you meant: _ISN_GameSaves__ISN_LoadSaveData_m1313) "__ISN_FetchSavedGames", referenced from: _ISN_GameSaves__ISN_FetchSavedGames_m1310 in Bulk_Assembly-CSharp_0.o (maybe you meant: _ISN_GameSaves__ISN_FetchSavedGames_m1310) "__ISN_SaveGame", referenced from: _ISN_GameSaves__ISN_SaveGame_m1309 in Bulk_Assembly-CSharp_0.o (maybe you meant: _ISN_GameSaves__ISN_SaveGame_m1309) "__ISN_DeleteSavedGame", referenced from: _ISN_GameSaves__ISN_DeleteSavedGame_m1311 in Bulk_Assembly-CSharp_0.o (maybe you meant: _ISN_GameSaves__ISN_DeleteSavedGame_m1311) ld: symbol(s) not found for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation) |
正在查找原因。。。
排查：
通过在代码中搜索"__ISN_ResolveConflictingSavedGames",等，发现在是IOSNative这个插件里的代码，由此再一回想，肯定是IOSNativeSettings中之前做过的修改有关系，那时没事把Game Center和Social Sharing的勾给去了。
经再次打包测试，真是的以上的问题，OK 解决问题了。
真是没事找抽型的，呼！！！
总结
还有一个很值得注意的就是寻找答案的方法，在遇到这个问题时，前思后想都觉得没道具，怎么好好的，也没改哪里却突然遇到这种问题，一下子无从下手，搜遍百度也没有找到一样的答案，这时应该在报错的提示中仔细阅读，如__ISN_DeleteSavedGame 这个关键词，还有后面in Bulk_Assembly-CSharp_0.o 这段提示，表示在CSharp中，所以这个问题就可以到CSharp中搜索上面的那个关键词，一查找，再看一下cs文件的路径，就全然明白了，也马上想起了之前做过的哪些改动。
游戏中加载时无法读取数据库：InvalidOperationException: No connection associated with this command
在Unity编辑器中倒还是一切正常，但是Xcode中打包成功安装后，真机上却在加载进度条卡住了，具体内容如下，可以大体看出是数据库表加载的问题。
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InvalidOperationException: No connection associated with this command at Mono.Data.Sqlite.SqliteCommand.ExecuteReader () [0x00000] in <filename unknown>:0 at BaseMapList.InitDictionary () [0x00000] in <filename unknown>:0 at BaseMapList.GetAllItems () [0x00000] in <filename unknown>:0 at LevelManager.InitLevelList () [0x00000] in <filename unknown>:0 at LevelManager..ctor () [0x00000] in <filename unknown>:0 at LevelManager.get_Instance () [0x00000] in <filename unknown>:0 at BattleManager.Update () [0x00000] in <filename unknown>:0 (Filename: currently not available on il2cpp Line: -1) |
问题的原因已找到：是因为在登陆界面引用了baseTable只读数据库的问题，去除读取这类数据库，改用其它方式实现功能，如此解决问题。至于为什么会读取这类数据库表会出错，可能是还没生成出数据库表就开始要读取了的原故吧。
Apple Mach-O Linker (Id) Error Linker command failed with exit code 1
在新MAC上打包出现问题如下：
Apple Mach-O Linker (Id) Error
Linker command failed with exit code 1
解决方法：
进入项目TARGETS/选择您的项目
General/Deployment Info/Deployment Target 在此选择了8.0版本
可能是使用的Xcode8.x的原因，5.1.1版本无法正常打包，显示最低版本为基础8.0
调试时报错(Filename: currently not available on il2cpp Line: 4294967295)
打包安装都正常，但进入游戏后读取数据库信息时吧，就停住无法继续进度条了。以下为Xcode中的日志。
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InvalidOperationException: No connection associated with this command at Mono.Data.Sqlite.SqliteConnectionHandle.op_Implicit (IntPtr db) [0x00000] in <filename unknown>:0 at Mono.Data.Sqlite.SqliteCommand.InitializeForReader () [0x00000] in <filename unknown>:0 at Mono.Data.Sqlite.SqliteCommand.ExecuteReader (CommandBehavior behavior) [0x00000] in <filename unknown>:0 at Mono.Data.Sqlite.SqliteCommand.ExecuteReader () [0x00000] in <filename unknown>:0 at ConfigDBManager.ExecuteCMD (System.String strSql) [0x00000] in <filename unknown>:0 at DataBaseAdapter.SelectAll[T] (System.String tableName, System.String keyName, Boolean IsEncrypt) [0x00000] in <filename unknown>:0 at BaseMapList.InitDictionary () [0x00000] in <filename unknown>:0 at BaseMapList.GetAllItems () [0x00000] in <filename unknown>:0 at LevelManager.InitLevelList () [0x00000] in <filename unknown>:0 at LevelManager..ctor () [0x00000] in <filename unknown>:0 at LevelManager.get_Instance () [0x00000] in <filename unknown>:0 at PlayerManager.CreateInstance (Int32 playerId) [0x00000] in <filename unknown>:0 at PlayerManager.LoadPlayer (Int32 playerId) [0x00000] in <filename unknown>:0 at GameStage.InitGameLogic () [0x00000] in <filename unknown>:0 at GameStage.Do () [0x00000] in <filename unknown>:0 at GameStage.Enter () [0x00000] in <filename unknown>:0 at StageManager.ChangeStage (.BaseStage nextStage) [0x00000] in <filename unknown>:0 at UpdateStage.InitApp () [0x00000] in <filename unknown>:0 at UpdateStage.Update () [0x00000] in <filename unknown>:0 (Filename: currently not available on il2cpp Line: 4294967295) |
收集的参考资料，暂时还不知原因所在：
IL2CPP INTERNALS – DEBUGGING TIPS FOR GENERATED CODE
Xcode iOS9.3 配置包更新
在Finder状态下前往文件夹，快捷键：shift+command+G，填写路径/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport
Xcode IOS9.3配置包下载链接：http://pan.baidu.com/s/1pL6AESz