下载WebView内的文件

我的Android应用程序中有一个webview。 当用户去webview并点击一个链接下载文件没有任何反应。

URL = "my url"; mWebView = (WebView) findViewById(R.id.webview); mWebView.setWebViewClient(new HelloWebViewClient()); mWebView.getSettings().setDefaultZoom(ZoomDensity.FAR); mWebView.loadUrl(URL); Log.v("TheURL", URL); 

如何在webview中启用下载？ 如果我禁用webview并启用意图从应用程序加载浏览器上的URL然后下载无缝工作。

 String url = "my url"; Intent i = new Intent(Intent.ACTION_VIEW); i.setData(Uri.parse(url)); startActivity(i); 

有人可以帮我吗？ 该页面加载没有问题，但链接到HTML页面中的图像文件不工作…

Answer 1

你有没有尝试过？

 mWebView.setDownloadListener(new DownloadListener() { public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) { Intent i = new Intent(Intent.ACTION_VIEW); i.setData(Uri.parse(url)); startActivity(i); } }); 

Answer 2

试试这个。 经过了很多的post和论坛，我发现这一点。

 mWebView.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.allowScanningByMediaScanner(); request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); //Notify client once download is completed! request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "Name of your downloadble file goes here, example: Mathematics II "); DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE); dm.enqueue(request); Toast.makeText(getApplicationContext(), "Downloading File", //To notify the Client that the file is being downloaded Toast.LENGTH_LONG).show(); } }); 

不要忘了给这个权限！ 这个非常重要！ 在你的Manifest文件中添加（AndroidManifest.xml文件）

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <!-- for your file, say a pdf to work --> 

希望这可以帮助。 干杯:)

Answer 3

尝试使用下载pipe理器，它可以帮助你下载你想要的一切，并节省您的时间。

检查这些选项：

选项1 – >

  mWebView.setDownloadListener(new DownloadListener() { public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) { Request request = new Request( Uri.parse(url)); request.allowScanningByMediaScanner(); request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "download"); DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE); dm.enqueue(request); } }); 

选项2 – >

 if(mWebview.getUrl().contains(".mp3") { Request request = new Request( Uri.parse(url)); request.allowScanningByMediaScanner(); request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "download"); // You can change the name of the downloads, by changing "download" to everything you want, such as the mWebview title... DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE); dm.enqueue(request); } 

Answer 4

  mwebView.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); String cookies = 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)); DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE); dm.enqueue(request); Toast.makeText(getApplicationContext(), "Downloading File", Toast.LENGTH_LONG).show(); }});