How to enable download in webview in Sketchware apps?

How to enable download in an app created with Sketchware?

Suppose you have created an app in Sketchware which uses webview to open a site. You can seamlessly explore the site in your app. But the download links in the webview field do not work.

But it is possible to make it work by exporting the source code. You can edit the code in either Android studio or Eclipse to add your desired features and then recompile it. I tried to do that but soon realized that setting up environment for development of Android app is not easy for a naive like me. But it can be done by code injection or by using another mobile app called Anacode.

Enabling download from webview in Sketchware using add source directly block.

1. In VIEW area of your app insert a WebView (webview1).

2. In LOGIC area, in onCreate event,

a. Add write String... to file path ... Block. This will add WRITE_EXTERNAL_STORAGE permission.

b. Then add an add source directly block. In this block put following code:

webview1.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse(url));
startActivity (intent);

}
});

The above code will enable download using Chrome. To download directly, use following code.
webview1.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
try {
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
String cookies = CookieManager.getInstance().getCookie(url);
request.addRequestHeader("cookie", cookies);
request.addRequestHeader("User-Agent", userAgent);
request.setDescription("Downloading file...");
request.setTitle(URLUtil.guessFileName(url, contentDisposition, mimetype));
request.allowScanningByMediaScanner(); request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);

java.io.File aatv = new java.io.File(Environment.getExternalStorageDirectory().getPath() + "/Download");
if(!aatv.exists()){if (!aatv.mkdirs()){ Log.e("TravellerLog ::","Problem creating Image folder");}}

request.setDestinationInExternalPublicDir("/Download", URLUtil.guessFileName(url, contentDisposition, mimetype));

DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
manager.enqueue(request);
showMessage("Downloading File....");

//Notif if success
BroadcastReceiver onComplete = new BroadcastReceiver() {
public void onReceive(Context ctxt, Intent intent) {
showMessage("Download Complete!");
unregisterReceiver(this);
}};
registerReceiver(onComplete, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
} catch (Exception e){
showMessage(e.toString());
}
}

});

c. After this add webview loadUrl block and write the url you intend to load in webview.

4. Save and run the project.

For how to enable upload from webview in Sketchware, visit the link below:
http://www.sketchwarehelp.com/2017/10/how-to-enable-upload-from-webview-in.html