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Opening pdf of sd card in webview

i am trying to load pdf in webview from my sdcard but it gives message
" Sorry, we were unable to find the document at the original source. Verify that the document still exists! "

i also googled this but after banging my head a lot i got nothing than this one and this one ...

  webView = (WebView) findViewById(R.id.webview_compontent);
   fill_form = (Button) findViewById(R.id.fill_form);

   fill_form.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        Toast.makeText(getApplicationContext(), "In Progress", Toast.LENGTH_LONG).show();
    }
});


   webView.getSettings().setJavaScriptEnabled(true);     
   webView.getSettings().setLoadWithOverviewMode(true);
  // webView.getSettings().setUseWideViewPort(true);        
    webView.setWebViewClient(new WebViewClient(){

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            progDailog.show();
            view.loadUrl(url);

            return true;                
        }
        @Override
        public void onPageFinished(WebView view, final String url) {
            progDailog.dismiss();
        }
    });
 //   String fileurl = Environment.getExternalStorageDirectory()+File.separator +"pk.pdf";
    File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+File.separator+"pk.pdf");
    Uri fileurl = (Uri.fromFile(file));

    String Url = "http://docs.google.com/gview?embedded=true&url=" + fileurl;
    webView.loadUrl(Url);
}

Please give any idea how to do this ?(I don't want to use any payable rendering library.)

I don't think that webview can load a pdf for you. Sso you still have two options: 1. Try to ask other applications to view this PDF for you. 2. You can try this librarry https://github.com/JoanZapata/android-pdfview if GNU policy suits you.

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