在一次项目调试中我遇到了如下问题：
错误信息为：
Reason: no suitable image found. Did find:
/Users/huangboru/Library/Developer/CoreSimulator/Devices/AD26D1B5-DEE9-4E27-949C-A442CBAB5A8B/data/Containers/Bundle/Application/04F80EC9-7D94-4150-9ADB-1E1BDA867E2D/ThreeDiretion.iOS.app/PlugIns/ThreeDiretionKeyBoard.appex/../../Frameworks/Mono.framework/Mono: required code signature missing for '/Users/huangboru/Library/Developer/CoreSimulator/Devices/AD26D1B5-DEE9-4E27-949C-A442CBAB5A8B/data/Containers/Bundle/Application/04F80EC9-7D94-4150-9ADB-1E1BDA867E2D/ThreeDiretion.iOS.app/PlugIns/ThreeDiretionKeyBoard.appex/../../Frameworks/Mono.framework/Mono'
解决办法：
打开项目的option->iOS Build ,在 "Additional mtouch arguments"中加入--mono:static 即可；
