Pdf ist keine Pdf

http://192.168.16.2/index.php?page=Attachment&attachmentID=1058&h=051501f5fd36944b3213f1f1b52ba41badd7892f

        // WebView Settings
        //
        wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
        webView = (WebView) findViewById(R.id.webView1);
        webView.setWebViewClient(new WebViewClient());
        webView.setWebChromeClient(new WebChromeClient());
        webView.getSettings().setLoadsImagesAutomatically(true);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setAppCacheEnabled(true);
        webView.getSettings().setAllowFileAccess(true);
        webView.getSettings().setBuiltInZoomControls(true);
        webView.getSettings().setDisplayZoomControls(false);
        webView.getSettings().setLoadWithOverviewMode(true);
        webView.getSettings().setUseWideViewPort(true);
        webView.getSettings().setDomStorageEnabled(true);
        webView.setInitialScale(100);
//        webView.loadUrl("http://www.fraunhofer.de");
//         webView.loadUrl("http://www.he-man.de");
         String url = "http://192.168.16.2/index.php?form=UserLogin";
         SharedPreferences prefs = getSharedPreferences("Password.xml",
         MODE_PRIVATE);
         String Loginusername = prefs.getString("loginUsername", null);
         String password = prefs.getString("password", "");
         if (Loginusername != null) {
         String data = "loginUsername=" + Loginusername + "&password="
         + password;
         webView.postUrl(url, EncodingUtils.getBytes(data, "base64"));
        
         } else {
         Toast.makeText(getBaseContext(), "Kein Login gespeichert",
         Toast.LENGTH_LONG).show();
         Intent intent = new Intent(MainActivity.this, Password.class);
         MainActivity.this.startActivity(intent);
         webView.reload();
        
         }

    
    

//         Eventuell PDF
         webView.setWebViewClient(new WebViewClient() {
         public boolean shouldOverrideUrlLoading(WebView view, String url) {
         if (url.contains(".pdf")) {
        
         Intent intent = new Intent(Intent.ACTION_VIEW);
         intent.setData(Uri.parse(url));
         startActivity(intent);
        
         return true;
         }
         return false;
         }
         });