When I click the button in WebView , it should load the PDF file which will be saved in external storage.
To do this, I install DownloadListener :
webview.setDownloadListener(new DownloadHandler()); public class DownloadHandler implements 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.allowScanningByMediaScanner(); request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, getFileName(url)); DownloadManager dm = (DownloadManager)getContext().getSystemService(getContext().DOWNLOAD_SERVICE); dm.enqueue(request); } }
The problem occurs when trying to do this on Android M, where all permissions are set at runtime.
How do I first request permission before starting the download and continue or not with the download, depending on whether they were provided?
The download shouldInterceptRequest calls shouldInterceptRequest not shouldOverrideUrlLoading , so I don’t even know how I can cancel the request to check permissions first.
Requesting permissions after starting WebView not an option, because you can do much more than just upload files.
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