如何捕獲滾動視圖內縮放的UIImageView以在Android中裁剪？

Question

我已經承認這個鏈接How do I capture a zoomed UIImageView inside of a Scrollview to crop?

我想在android中做同樣的事情，如下面的截圖所示。我可以做到嗎？

Answer 1

FUNC getZoomedImage（） - > {UIImage的

//Calculate the required area from the scrollview 
    var visibleRect = CGRect() 
    let scale: CGFloat = CGFloat(1.0/scrollViewGallery.zoomScale) 
    visibleRect.origin.x = scrollViewGallery.contentOffset.x * scale 
    visibleRect.origin.y = scrollViewGallery.contentOffset.y * scale 
    visibleRect.size.width = scrollViewGallery.bounds.size.width * scale 
    visibleRect.size.height = scrollViewGallery.bounds.size.height * scale 
    let cgImg: CGImage? = imgView.image?.cgImage?.cropping(to: visibleRect) 
    let croppedImg = UIImage(cgImage: cgImg!) 
    return croppedImg 
}