Question

当用户选择我的应用溢出操作栏中提供的“生成excel”选项时，我正在应用中的搜索结果中生成Excel工作表。我可以将该文件保存在“file：///storage/emulated/0/Download/tempfile.xls”的位置，没有任何问题，但我想通过DownloadManager在下载菜单中提供生成的Excel工作表 -

String filepath = "file://" + Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/tempfile.xls";
        Uri uriDownloadFile = Uri.parse(filepath );
        DownloadManager.Request request = new DownloadManager.Request(uriDownloadFile);
        request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "tempfile.xls");
        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); // to notify when download is complete
        request.allowScanningByMediaScanner();// if you want to be available from media players
        DownloadManager manager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
        manager.enqueue(request);

我尝试使用Uri.parse（上面的第二行代码）将本地文件路径更改为uri。但是，我以下面的错误结束了 -

java.lang.IllegalArgumentException: Can only download HTTP/HTTPS URIs: file:///storage/emulated/0/Download/tempfile.xls

只能下载HTTP / HTTPS URI错误

0 个答案: