I am using multiple .html files in my app and opens it in a webview , i need to show the html pages as a thumb view as well , is it possible to convert the html pages into images or any other methods to show the html files as a preview. Please help me if any one know
-(void) webViewDidFinishLoad:(UIWebView *)webView {
UIGraphicsBeginImageContext(CGSizeMake(webView.layer.frame.size.width, webView.layer.frame.size.height));
[webView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIGraphicsBeginImageContext(CGSizeMake(70,100));
[image drawInRect:CGRectMake(0, 0, 70,100)];
image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//image is now a 70x100 thumbnail. make sure you include CoreGraphics
}
WKWebView has a more convenient way of doing it these days
class WebviewDelegate: NSObject, WKNavigationDelegate {
var completion: ((UIImage?) -> ())?
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
webView.evaluateJavaScript("document.body.offsetHeight;") { (result, error) in
if let height = result as? CGFloat {
let config = WKSnapshotConfiguration()
config.rect = CGRect(x: 0, y: 0, width: webView.scrollView.contentSize.width, height: height)
webView.takeSnapshot(with: config) { (image, error) in
self.completion?(image)
}
}
}
}
}
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