如何在webview中下载文件..？

我的应用程序将打开浏览器下载文件，但我希望它在webview中下载（不要打开浏览器下载）。 我不擅长app，请尽可能给我完整的代码。

using System; using Android.App; using Android.Content; using Android.Runtime; using Android.Views; using Android.Widget; using Android.OS; using Android.Webkit; using System.Net; namespace REC { [Activity(Label = "ABC", MainLauncher = true, Icon = "@drawable/rec512", ConfigurationChanges = Android.Content.PM.ConfigChanges.Orientation | Android.Content.PM.ConfigChanges.ScreenSize)] public class MainActivity : Activity { private WebView mWebView; protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); // Set our view from the "main" layout resource RequestWindowFeature(WindowFeatures.NoTitle); SetContentView(Resource.Layout.Main); mWebView = FindViewById(Resource.Id.webview); mWebView.Settings.SetRenderPriority(WebSettings.RenderPriority.High); mWebView.Settings.JavaScriptEnabled = true; mWebView.SetWebChromeClient(new WebChromeClient()); mWebView.LoadUrl("http://www.mywebsite"); mWebView.SetDownloadListener(new MyDownloadListerner(this)); mWebView.SetWebViewClient(new WebViewClient()); } class MonkeyWebChromeClient : WebChromeClient { public override bool OnJsAlert(WebView view, string url, string message, JsResult result) { return base.OnJsAlert(view, url, message, result); } public override Boolean OnJsConfirm(WebView view, String url, String message, JsResult result) { return base.OnJsConfirm(view, url, message, result); } public override Boolean OnJsPrompt(WebView view, String url, String message, String defaultValue, JsPromptResult result) { return base.OnJsPrompt(view, url, message, defaultValue, result); } } public override bool OnKeyDown(Keycode keyCode, KeyEvent e) { if (keyCode == Keycode.Back && mWebView.CanGoBack()) { mWebView.GoBack(); return true; } return base.OnKeyDown(keyCode, e); } } public class WebClient : WebViewClient { public override bool ShouldOverrideUrlLoading(WebView view, string url) { //return base.ShouldOverrideUrlLoading(view, url); view.LoadUrl(url); return true; } internal object GetWebRequest(Uri address) { throw new NotImplementedException(); } } class MyDownloadListerner : Java.Lang.Object, IDownloadListener { Context cont; public MyDownloadListerner(Context context) { cont = context; } public void OnDownloadStart(string url, string userAgent, string contentDisposition, string mimetype, long contentLength) { Android.Net.Uri uri = Android.Net.Uri.Parse(url); Intent intent = new Intent(Intent.ActionView, uri); cont.StartActivity(intent); } } } 

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