Differentiate between user cancellation and actual errors

app/src/main/java/com/firebase/uidemo/auth/AuthUiActivity.java

@@ -200,7 +200,7 @@ protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 
     @MainThread
     private void handleSignInResponse(int resultCode, Intent data) {
-        IdpResponse response = data != null ? IdpResponse.fromResultIntent(data) : null;
+        IdpResponse response = IdpResponse.fromResultIntent(data);
 
         // Successfully signed in
         if (resultCode == ResultCodes.OK) {

auth/README.md

@@ -214,7 +214,7 @@ the user to sign in again later, or proceed with anonymous sign-in if supported.
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
     super.onActivityResult(requestCode, resultCode, data);
     if (requestCode == RC_SIGN_IN) {
-        IdpResponse response = data != null ? IdpResponse.fromResultIntent(data) : null;
+        IdpResponse response = IdpResponse.fromResultIntent(data);
 
         // Successfully signed in
         if (resultCode == ResultCodes.OK) {

auth/src/main/java/com/firebase/ui/auth/IdpResponse.java

@@ -145,7 +145,11 @@ public void writeToParcel(Parcel dest, int flags) {
      */
     @Nullable
     public static IdpResponse fromResultIntent(Intent resultIntent) {
-        return resultIntent.getParcelableExtra(ExtraConstants.EXTRA_IDP_RESPONSE);
+        if (resultIntent != null) {
+            return resultIntent.getParcelableExtra(ExtraConstants.EXTRA_IDP_RESPONSE);
+        } else {
+            return null;
+        }
     }
 
     public static Intent getIntent(IdpResponse response) {