一、集成环信SDK

1）按照官方文档一步一步集成，添加相关依赖库。
2）其中环信官方文档提示说在上传AppStore的时候，因 i386 x86_64 armv7 arm64 几个平台都合并到了一起，所以使用动态库上传appstore时需要将i386 x86_64两个平台删除后，才能正常提交审核。如果在未提交审核的时候删除掉，集成到工程里面，会报

 "_OBJC_CLASS_$_EMChatImage", referenced from:

      objc-class-ref in ChatSendHelper.o

     maybe you meant: _OBJC_CLASS_$_EMChatImageBubbleView)

  "_OBJC_CLASS_$_EMChatLocation", referenced from:

      objc-class-ref in ChatSendHelper.o

     (maybe you meant: _OBJC_CLASS_$_EMChatLocationBubbleView)

  "_OBJC_CLASS_$_EMChatText", referenced from:

      objc-class-ref in ChatSendHelper.o

     (maybe you meant: _OBJC_CLASS_$_EMChatTextBubbleView)

  "_OBJC_CLASS_$_EMImageMessageBody", referenced from:

      objc-class-ref in ChatSendHelper.o

  "_OBJC_CLASS_$_EMLocationMessageBody", referenced from:

      objc-class-ref in ChatSendHelper.o

  "_OBJC_CLASS_$_EMMessage", referenced from:

      objc-class-ref in ChatSendHelper.o

  "_OBJC_CLASS_$_EMTextMessageBody", referenced from:

      objc-class-ref in ChatSendHelper.o

  "_OBJC_CLASS_$_EMVideoMessageBody", referenced from:

      objc-class-ref in ChatSendHelper.o

  "_OBJC_CLASS_$_EMVoiceMessageBody", referenced from:

      objc-class-ref in ChatSendHelper.o

以上错误，因为删掉那俩个文件之后，只支持真机调试，不删除的话可以支持真机和模拟器调试。
希望能帮助到遇到此问题的童鞋！