tv profile account creation: fix the cancel behavior

+ when the user presses the back button, keep the modifications
+ minor code refactoring

Change-Id: I7dc39ebcad50cb7dbee84e10130fe4506e6be6f8
Gitlab: #628

ring-android/app/src/main/java/cx/ring/tv/account/TVProfileCreationFragment.java

@@ -209,18 +209,35 @@ public class TVProfileCreationFragment extends RingGuidedStepFragment<ProfileCre
     }
 
     public long onGuidedActionEditedAndProceed(GuidedAction action) {
-        if (action.getId() == USER_NAME) {
+        switch ((int) action.getId()){
+            case USER_NAME:
                 String username = action.getEditTitle().toString();
                 presenter.fullNameUpdated(username);
-            if (TextUtils.isEmpty(username))
+                if (username.isEmpty())
                     action.setTitle(getString(R.string.profile_name_hint));
                 else
                     action.setTitle(username);
-        } else if (action.getId() == CAMERA) {
+                break;
+            case CAMERA:
                 presenter.cameraClick();
-        } else if (action.getId() == GALLERY) {
+                break;
+            case GALLERY:
                 presenter.galleryClick();
+                break;
         }
         return super.onGuidedActionEditedAndProceed(action);
     }
+
+    @Override
+    public void onGuidedActionEditCanceled(GuidedAction action) {
+        if ((int) action.getId() == USER_NAME) {
+            String username = action.getEditTitle().toString();
+            presenter.fullNameUpdated(username);
+            if (TextUtils.isEmpty(username))
+                action.setTitle(getString(R.string.profile_name_hint));
+            else
+                action.setTitle(username);
+        }
+        super.onGuidedActionEditCanceled(action);
+    }
 }
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