Merge pull request #120 from shohey1226/add_twitter_cancelation_handling

added handling for cancelation

Author: auser

android/src/main/java/io/fullstack/oauth/OAuthManagerDialogFragment.java

@@ -35,6 +35,9 @@
 
 import im.delight.android.webview.AdvancedWebView;
 
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class OAuthManagerDialogFragment extends DialogFragment implements AdvancedWebView.Listener {
 
   private static final int WEBVIEW_TAG = 100001;
@@ -195,6 +198,15 @@ public void onReceivedError(WebView view, int code, String desc, String failingU
 
         private boolean interceptUrl(WebView view, String url, boolean loadUrl) {
           Log.i(TAG, "interceptUrl called with url: " + url);
+
+          // url would be http://localhost/twitter?denied=xxx when it's canceled
+          Pattern p = Pattern.compile("\\S*denied\\S*");
+          Matcher m = p.matcher(url);
+          if(m.matches()){
+            Log.i(TAG, "authentication is canceled");
+            return false;
+          }
+
           if (isCallbackUri(url, mController.getCallbackUrl())) {
             mController.getAccessToken(mWebView, url);
             return true;
@@ -326,4 +338,4 @@ public static int convertDpToPixel(float dp, Context context){
         float px = dp * ((float)metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT);
         return (int)px;
     }
-}
+}