Question

我想知道自2天以来但无法修复它。

我在WebView内打开了一个网址。网站中有一个Button可下载 .cer 文件。

我的问题是当我点击Button它开始下载文件并通过Notification Bar通知我。

我正在尝试下面的代码来执行此操作：

DownloadManager.Request request = new DownloadManager.Request(Uri.parse(sourceURL));
// appears the same in Notification bar while downloading

request.setTitle("Downloading");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
    request.allowScanningByMediaScanner();
    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
}
//DownloadManager.Request request = new DownloadManager.Request(source);                        
manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
// Use the same file name for the destination
File destinationFile = new File(directory, "/Download/test.cer");

if (destinationFile.exists()) {
    destinationFile.delete();
}
request.setDestinationUri(Uri.fromFile(destinationFile));
// Add it to the manager
referencepath = manager.enqueue(request);

与Device的默认浏览器相同但我可以在下载文件时我在firefox浏览器中打开网址。

我还添加了权限

<!-- Permission so that application can access Internet -->
<uses-permission android:name="android.permission.INTERNET" />
<!-- Permission so that application can write on device storage -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

在清单文件中。

请帮帮我。

Answer 1

您好，我最终成功下载了.cer文件。

对我有用的代码是：

String sourceURL = url;
        String directoryPath = directoryPath;
        DefaultHttpClient client = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(sourceURL);
        try {

            /**
             * getting Session Id from URL which is in Webview
             */
            String sessionId = CookieManager.getInstance().getCookie(
                    sourceURL.toString());
            if (sessionId != null)
                httpPost.addHeader("Cookie", sessionId);
            HttpResponse execute = client.execute(httpPost);
            String certResponseBody = EntityUtils.toString(execute
                    .getEntity());

我将.cer文件作为certResponseBody中的字符串获取，我将其保存为设备存储中的.cer文件。

...干杯

从Webview下载.cer文件

1 个答案: