How do I download using Kotlin?

Question

If you do this steps in Kotlin you can Download files from any WebView

Table of Contents Show

How do I download from Kotlin?
How do I use Kotlin download manager?
How do I run Kotlin app?
How do I download from URL?

1- Add these to your Manifest

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

2- Add these settings to your webview

val webViewSettings = binding.your@id@webview(InsideXML).settings 

        webViewSettings.javaScriptEnabled = true //Needed 

        webViewSettings.domStorageEnabled = true //Needed 

        webViewSettings.allowFileAccess = true //Needed 

        webViewSettings.loadsImagesAutomatically = true //Needed 

----Yo can have more here but this are needed -----

3-Handle the downloads

   //handle downloading 

        binding.wvBase.setDownloadListener { url, userAgent, contentDisposition, mimeType, _ -> 

            val request = DownloadManager.Request( 

                Uri.parse(url) 

            ) 

            request.setMimeType(mimeType) 

            val cookies: String = 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) 

            request.setDestinationInExternalPublicDir( 

                Environment.DIRECTORY_DOWNLOADS, URLUtil.guessFileName( 

                    url, contentDisposition, mimeType 

                ) 

            ) 

            val dm = getSystemService(DOWNLOAD_SERVICE) as DownloadManager 

            dm.enqueue(request) 

            alertdialog() 

        }

In my case I have a custom alert Dialog to control if user says no, yes.