title: Can't import import android.hardware.camera2 classes
body: <p>I imported the opencv android library to my android studio and the Camera2Renderer class has a lot of compiler errors because the <code>android.hardware.camera2</code> classes can't be imported.</p>
  
  <p><a href="https://i.stack.imgur.com/BWmDU.png" rel="noreferrer"><img src="https://i.stack.imgur.com/BWmDU.png" alt="enter image description here"></a></p>