iOS集成OpenCV遇到的问题Detected Apple '

Detected Apple 'NO' macro definition, it can cause build conflicts. Please, include this header before any Apple headers.

其中 一个警告 Detected Apple 'NO' macro definition, it can cause build conflicts. Please, include this header before any Apple headers.

意思是  让我们在引用这个头文件的时候应该放在所有Apple头文件之前

错误 

改成