How to open image from webview in new activity?

Question

Android

I have an application that displays a web page. It is necessary that when you click on the image, it opens in a new acivity. Subsequently, various manipulations will be performed there, such as scaling and moving the focus. What commands and methods to use?

Answer 1

You can use JavaScriptInterface, write a simple script, by clicking on the desired image, the string with the url will be transferred back to the application, and then open the activity and do what you need with the image url.
https://developer.android.com/guide/webapps/webview...

Answer 2

Here is the solution

@Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);

        final WebView.HitTestResult webViewHitTestResult = webView.getHitTestResult();
        if (webViewHitTestResult.getType() == WebView.HitTestResult.IMAGE_TYPE || webViewHitTestResult.getType() == WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE){
            
            menu.add("Сохранить изображение").setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
                @Override
                public boolean onMenuItemClick(MenuItem item) {

                    String downloadImg = webViewHitTestResult.getExtra();
                    if (URLUtil.isValidUrl(downloadImg)){
                        DownloadManager.Request request = new DownloadManager.Request(Uri.parse(downloadImg));
                        request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
                        request.setAllowedOverRoaming(false);
                        request.setTitle("GadgetSaint Downloading " + "Sample" + ".png");
                        request.setDescription("Downloading " + "Sample" + ".png");
                        request.setVisibleInDownloadsUi(true);
                        request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "/GadgetSaint/"  + "/" + "Sample" + ".png");
                        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_ONLY_COMPLETION);
                        DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
                        downloadManager.enqueue(request);
                    }
                    return false;
                }
            });
        }
    }