How to render a whole UITableView as an UIImage in iOS?

Question

I have simple UITableView with some data. The table\'s height is greater than the screen size. Now I need to catch screenshot of this table (a whole table). I k

Answer 1

I have same requirement to send image of tableview to admin via email, Hope this will help you. Function implemented in swift 4

func screenshot() -> UIImage{
    var image = UIImage()

    UIGraphicsBeginImageContextWithOptions(self.tblDetails.contentSize, false, UIScreen.main.scale)

    // save initial values
    let savedContentOffset = self.tblDetails.contentOffset
    let savedFrame = self.tblDetails.frame
    let savedBackgroundColor = self.tblDetails.backgroundColor

    // reset offset to top left point
    self.tblDetails.contentOffset = CGPoint(x: 0, y: 0)
    // set frame to content size
    self.tblDetails.frame = CGRect(x: 0, y: 0, width: self.tblDetails.contentSize.width, height: self.tblDetails.contentSize.height)
    // remove background
    self.tblDetails.backgroundColor = UIColor.clear

    // make temp view with scroll view content size
    // a workaround for issue when image on ipad was drawn incorrectly
    let tempView = UIView(frame: CGRect(x: 0, y: 0, width: self.tblDetails.contentSize.width, height: self.tblDetails.contentSize.height))

    // save superview
    let tempSuperView = self.tblDetails.superview
    // remove scrollView from old superview
    self.tblDetails.removeFromSuperview()
    // and add to tempView
    tempView.addSubview(self.tblDetails)

    // render view
    // drawViewHierarchyInRect not working correctly
    tempView.layer.render(in: UIGraphicsGetCurrentContext()!)
    // and get image
    image = UIGraphicsGetImageFromCurrentImageContext()!

    // and return everything back
    tempView.subviews[0].removeFromSuperview()
    tempSuperView?.addSubview(self.tblDetails)

    // restore saved settings
    self.tblDetails.contentOffset = savedContentOffset
    self.tblDetails.frame = savedFrame
    self.tblDetails.backgroundColor = savedBackgroundColor

    UIGraphicsEndImageContext()

    return image
}