Android WebView設置下載文件夾位置

我已經添加了一個webview活動，並希望控制哪個文件夾下載，我的最終用戶將通過我的應用程序下載。這些文件將是PDF文件，我希望它們進入我的應用程序使用的特定文件夾，而不是默認的下載文件夾。Android WebView設置下載文件夾位置

public class myweb extends Activity { 

private WebView myWebView; 
private String LOG_TAG = "AndroidWebViewActivity"; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.knitweb); 


     myWebView = (WebView) findViewById(R.id.webView1); 

     //enable Javascript 
     myWebView.getSettings().setJavaScriptEnabled(true); 

     //loads the WebView completely zoomed out 
     myWebView.getSettings().setLoadWithOverviewMode(true); 

     //true makes the Webview have a normal viewport such as a normal desktop browser 
     //when false the webview will have a viewport constrained to it's own dimensions 
     myWebView.getSettings().setUseWideViewPort(true); 

     //override the web client to open all links in the same webview 
     myWebView.setWebViewClient(new MyWebViewClient()); 
     myWebView.setWebChromeClient(new MyWebChromeClient()); 

     //Injects the supplied Java object into this WebView. The object is injected into the 
     //JavaScript context of the main frame, using the supplied name. This allows the 
     //Java object's public methods to be accessed from JavaScript. 
     myWebView.addJavascriptInterface(new JavaScriptInterface(this), "Android"); 

     //load the home page URL 
     //myWebView.loadUrl("http://demo.mysamplecode.com/Servlets_JSP/pages/androidWebView.jsp"); 
     myWebView.loadUrl("http://www.patonsyarns.com/pattern.php?PID=4521&cps=21191"); 


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

      } 
     }); 

} 



private class MyWebViewClient extends WebViewClient { 
    @Override 
    public boolean shouldOverrideUrlLoading(WebView view, String url) { 
     if (Uri.parse(url).getHost().equals("demo.mysamplecode.com")) { 
      return false; 
     } 
     Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 
     startActivity(intent); 
     return true; 
    } 
} 


private class MyWebChromeClient extends WebChromeClient { 

     //display alert message in Web View 
     @Override 
     public boolean onJsAlert(WebView view, String url, String message, JsResult result) { 
      Log.d(LOG_TAG, message); 
      new AlertDialog.Builder(view.getContext()) 
       .setMessage(message).setCancelable(true).show(); 
      result.confirm(); 
      return true; 
     } 

    } 

    public class JavaScriptInterface { 
     Context mContext; 

     // Instantiate the interface and set the context 
     JavaScriptInterface(Context c) { 
      mContext = c; 
     } 

     //using Javascript to call the finish activity 
     public void closeMyActivity() { 
      finish(); 
     } 

    } 

    //Web view has record of all pages visited so you can go back and forth 
    //just override the back button to go back in history if there is page 
    //available for display 
    @Override 
    public boolean onKeyDown(int keyCode, KeyEvent event) { 
     if ((keyCode == KeyEvent.KEYCODE_BACK) && myWebView.canGoBack()) { 
      myWebView.goBack(); 
      return true; 
     } 
     return super.onKeyDown(keyCode, event); 
    }

我不知道用戶將下載哪些文件，除了他們將是PDF文件。

任何幫助將是巨大的感謝

來源

2013-01-08 Mark