Blank empty page in android webview after facebook login using javascript

Question

i am developing a new android application,and using a webview to view my website in one the website pages there is a link for login with facebook

after logging directly, it returns a blank and embty webview
i have seen couple of topics here regarding the same issue but it is not exactly like mine please note that if i am using normal desktop browser the issue is not there

I assume that there is a property of the webview should be adjusted , below my webview code

webView1=(WebView)findViewById(R.id.webView1); 
webView1.setWebViewClient(new MyWebViewClient()); 
WebView webView1 = (WebView) findViewById(R.id.webView1);
webView1.setWebChromeClient(new WebChromeClient());
webView1.getSettings().setAppCacheEnabled(true);
webView1.getSettings().setDatabaseEnabled(true);
webView1.getSettings().setDomStorageEnabled(true);
webView1.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView1.getSettings().setGeolocationEnabled(true);           
webView1.loadUrl("http://www.myactivepoint.com/mobile/maplp.asp");

i really approciate your support

I believe it is caused by WebView being by default "single view only" see https://stackoverflow.com/questions/12648099/making-facebook-login-work-with-an-android-webview/19068076#19068076 — rogerdpack, Oct 11 '17 at 06:48

score 1 · Answer 1 · answered Aug 20 '13 at 10:58

I had a similar experience with you. I solved the problem by the following methods.

public class CustomWebViewClient extends WebViewClient{      
    @Override
    public void onPageFinished(WebView view, String url) {

        if(url.startsWith("https://m.facebook.com/dialog/oauth")){
           String redirectUrl = "http://www.mydomain.com/myReturnUrl";
            view.loadUrl(redirectUrl);
           return;
       }
        super.onPageFinished(view, url);
    }}

and just add it to your WebView

webview.setWebViewClient(new CustomWebViewClient());

Before you can do this you have to check this first seems to be. (app settings->basic->Mobile Web->Enter the return_url) — Heesung Park, Aug 21 '13 at 09:13

score 1 · Answer 2 · answered Jan 14 '15 at 09:58

This is my solution. After successfull login you have to redirect the page. You can get the address from refsrc parameter in the Facebook URL, but sometimes (e.g. next try to log in) refsrc is missing so I use domain parameter. You can override the URL address if you need. See the code:

webView.setWebViewClient(new WebViewClient()
{
    @Override
    public void onPageFinished(final WebView view, final String url)
    {
        if(getActivity()!=null)
        {
            if(url.contains("facebook.com") && url.contains("dialog/oauth") &&
                (url.contains("&refsrc") || url.contains("&domain")))
            {
                Uri uri = Uri.parse(url);
                String callbackUrl = uri.getQueryParameter("refsrc");
                if(callbackUrl==null)
                    callbackUrl = "http://" + uri.getQueryParameter("domain");
                view.loadUrl(callbackUrl); // callback URL
            }
        }
    }
}

The problem with this is that it will close the permission dialog after the login — Marc, Nov 15 '15 at 16:31

Blank empty page in android webview after facebook login using javascript

2 Answers2