title: How to use openCV in iOS? I just can't import the framework correctly
body: <p>How can I add opencv2 correctly to Xcode?
  I just download from the website the opencv2.framework.zip， 
  <a href="https://i.stack.imgur.com/0C0LX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0C0LX.png" alt="enter image description here"></a>
  and then I unzip the opencv2 ,finally appears opencv2.framework.
  <a href="https://i.stack.imgur.com/4TdKR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4TdKR.png" alt="enter image description here"></a>
  and then I build an xcode project, choose ios single view.
  <a href="https://i.stack.imgur.com/Yp0TE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Yp0TE.png" alt="enter image description here"></a>
  then I try to add opencv2.framework to the project
  <a href="https://i.stack.imgur.com/nqJqL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nqJqL.png" alt="enter image description here"></a>
  then I compile the project, It shows that:
  <a href="https://i.stack.imgur.com/vYwZR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vYwZR.png" alt="enter image description here"></a>
  what's happening here?I'm new here and I just can't figure out a solution. Thank you very much for your help!</p>