android - 如何在Scrollview中捕获缩放的UIImageView以便在Android中裁剪？

我已引用此链接How do I capture a zoomed UIImageView inside of a Scrollview to crop?
我想在android上做同样的事情，如下面的截图所示。我该怎么做呢？

最佳答案

func getzoomedimage（）->uiimage{

    //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
}

关于android - 如何在Scrollview中捕获缩放的UIImageView以便在Android中裁剪？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/21623589/