Take screenshot of host app using iOS share/action extensions?

Question

I will like to know how to take a screenshot of the iOS host app with the use of a share/action extension.

My use case is as follows:

1. use the Safari br

Answer 1

Edit: So the below works in the Simulator but does not work on the device. I'm presently looking for a solution as well.

Here's a solution that I think the Awesome Screenshot app uses:

func captureScreen() -> UIImage
{
    // Get the "screenshot" view.
    let view = UIScreen.mainScreen().snapshotViewAfterScreenUpdates(false)

    // Add the screenshot view as a subview of the ShareViewController's view.
    self.view.addSubview(view);

    // Now screenshot *this* view.
    UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, false, 0);
    self.view.drawViewHierarchyInRect(view.bounds, afterScreenUpdates: true)
    let image: UIImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    // Finally, remove the subview.
    view.removeFromSuperview()

    return image
}