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android facebook javascript webview

Making facebook login work with an Android Webview

I am just trying to implement the facebook login on a WebView in Android. The problem is after I click the facebook button on my HTML page and insert the username and password on Facebook dialog. The url redirect is just giving me a black page.

   @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WebView webview = new WebView(this);
webview.setWebChromeClient(new WebChromeClient());
webview.getSettings().setPluginState(PluginState.ON);
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webview.setWebViewClient(new WebViewClient());
webview.loadUrl("http://peoplehunt.crowdscanner.com/hunt");
setContentView(webview);

This is the Facebook regular javascript API on my HTML page and this function gets called when the facebook button is clicked.

$("#login_facebook").click(function() {
FB.login(function(response) {
//This function should be called
if (response.authResponse) {
FB.api('/me?fields=name,email,picture,id&type=large', function(response) {
//console.log("email "+response.email);
$("#submitHandle").hide();
$("#loader").show();
//console.log('Good to see you, ' + response.picture + '.');
var theUsername = response.name;
theUsername = theUsername.replace(/ /g, '_')+"_"+response.id+"@meetforeal.com";
//console.log(theUsername);
$("input[name=email]").val(encodeURIComponent(response.email));
$("input[name=lastName]").val(encodeURIComponent(response.name));
$("input[name=avatarImage]").val(response.picture);
$("input[name=userName]").val(encodeURIComponent(theUsername));
$("#msg_twitter").fadeIn("slow");
$("#submitHandle").show();
$("#loader").hide();
$("#user").attr("action","/crowdmodule/auth/registerattendeefacebook");
$("#user").submit();
});
} else {
//console.log('User cancelled login or did not fully authorize.');
}
}, {scope: 'email'});

ANY ideas on how to get the response back after the redirect on the Facebook dialog page? THANKS.