使用authendication在android Webview中显示pdf

Question

请查一下我的代码。

public class MainActivity extends Activity {

    @SuppressLint("SetJavaScriptEnabled")
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        WebView webview = new WebView(MainActivity.this);
        webview.getSettings().setJavaScriptEnabled(true);
        String url=
                 "https://docs.google.com/gview?embedded=true&url=" +"http://spahousingli.evero.com/SPADocuments/Forms/Clients/Admissions/ADM000000011.pdf";


        webview.loadUrl(url);
        webview.setWebViewClient(new WebViewClient() {
            public void onReceivedHttpAuthRequest(WebView view,
                    android.webkit.HttpAuthHandler handler, String host,
                    String realm) {

                handler.proceed("username", "password");
            };
        });
        setContentView(webview);

    }   
}

Answer 1

我认为问题在于用于登录的凭据（用于基本身份验证的http头）被发送到谷歌url，而谷歌不会将它们发送到spahousingli.evero.com。因此，spahousingli.evero.com不会收到认证头，并将拒绝来自Google的请求。

我认为首先下载pdf并在设备上用Adobe Reader打开它是最简单的解决方案。

编辑:
下载pdf到您的手机。（locationOfYourPdfFile）使用以下代码打开pdf：

File pdfFile = new File(locationOfYourPdfFile);
Uri path = Uri.fromFile(pdfFile);
Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
pdfIntent.setDataAndType(path,"application/pdf");
pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

try{
    startActivity(pdfIntent);
}catch(ActivityNotFoundException e){
    Toast.makeText(MyPDFDemo.this, "No Application available to view pdf", Toast.LENGTH_LONG).show();
    startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=com.adobe.reader")));
}