android webview download

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webview.setDownloadListener(new DownloadListener() {             @Override             public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {                 DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));                 request.setMimeType(mimetype);                 request.addRequestHeader("User-Agent", userAgent);                 request.setDescription("Downloading file");                 String[] fileArray = url.split("/");                 String fileName = fileArray[fileArray.length - 1];                 request.setTitle(fileName);                 request.allowScanningByMediaScanner();                 request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);                 request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);                 DownloadManager dm = (DownloadManager) getActivity().getSystemService(DOWNLOAD_SERVICE);                 dm.enqueue(request);                 Toast.makeText(getActivity().getApplicationContext(), "Downloading File", Toast.LENGTH_LONG).show();             }         });

주의점 Android 6.0(M)이상 버전부터 File에 권한 Permission 처리가 되어야함