有人知道如何使用Swift代码对所有Web视图进行全屏截图(不是屏幕!因为WebView很长,我们必须滚动才能查看所有内容),并通过UIActivityViewController
共享吗?
有人知道如何使用Swift代码对所有Web视图进行全屏截图(不是屏幕!因为WebView很长,我们必须滚动才能查看所有内容),并通过UIActivityViewController
共享吗?
当网页视图加载完成后,请尝试以下代码:
编辑:在模拟器中运行此代码,然后检查您的文档应用程序目录中的screenshot.jpeg文件。
class ViewController: UIViewController,UIWebViewDelegate {
let fileDirectory = NSSearchPathForDirectoriesInDomains(
.DocumentDirectory, .UserDomainMask, true)
@IBOutlet weak var webView: UIWebView!
override func viewDidLoad() {
var urlPath = "http://www.bbc.com/"
let requestUrl = NSURL(string: urlPath)
let request = NSURLRequest(URL: requestUrl!)
webView.loadRequest(request)
webView.delegate = self
}
func webViewDidFinishLoad(webView: UIWebView) {
if (!webView.loading){
var webViewFrame = webView.frame
webView.frame = CGRectMake(webViewFrame.origin.x, webViewFrame.origin.y, webView.scrollView.contentSize.width, webView.scrollView.contentSize.height)
UIGraphicsBeginImageContextWithOptions(webView.scrollView.contentSize, false, 0);
self.webView.layer.renderInContext(UIGraphicsGetCurrentContext())
var image:UIImage = UIGraphicsGetImageFromCurrentImageContext();
var imageData = UIImageJPEGRepresentation(image, 0.7)
var currentFileName = "screenshot.jpeg"
var imageFilePath = fileDirectory[0].stringByAppendingPathComponent(currentFileName)
var imageFileURL = NSURL(fileURLWithPath: imageFilePath)
imageData.writeToURL(imageFileURL!, atomically: false)
webView.frame = webViewFrame
}
}
}
使用 Swift 5 中的 WKWebView
的解决方案
extension ViewController: WKNavigationDelegate {
func webView(_ webView: WKWebView,didFinish navigation: WKNavigation!) {
let configuration = WKSnapshotConfiguration()
configuration.rect = CGRect(origin: .zero, size: (self.webView.scrollView.contentSize))
webView.takeSnapshot(with: configuration) {image, error in
if let image = image {
self.saveImage(imageName: "snapshot.jpg", image: image)
}
}
}
}
webView.frame = CGRectMake(webViewFrame.origin.x, webViewFrame.origin.y, webView.scrollView.contentSize.width, webView.scrollView.contentSize.height) UIGraphicsBeginImageContextWithOptions(webView.scrollView.contentSize, false, 0); self.webView.layer.renderInContext(UIGraphicsGetCurrentContext())var image:UIImage = UIGraphicsGetImageFromCurrentImageContext();webView.frame = webViewFrame但是截图并不是整个webview的,就像一张屏幕截图。 - Hassan Taleb
var fileDirectory = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
。关于截图,您确定webview已经完全加载了吗?我刚刚尝试了不同的网站,一切正常。 - Zell B.