title: Turn off Flashlight on Android Lollipop version
body: <pre><code>kCamera = Camera.open();
  kCamera.Parameters cam1= k.Camera.getParameters();
  cam1.setFlashMode(Parameters.FLASH_MODE_TORCH);
  kCamera.setParameters(cam1);
  SurfaceTexture mPreviewTexture = new SurfaceTexture(0);
  try {
       kCamera.setPreviewTexture(mPreviewTexture);
  } catch {
  }
  mCam.startPreview();
  </code></pre>
  
  <p>This works fine, it opens flashlight.</p>
  
  <p>But how can I turn off ?</p>