Pre-populate card id in Barcode Selector

If a user is attempting to update a card id of an existing card,
before when the Enter Card button was selected the barcode selector
view would be empty. To be more useful, the view will now be
pre-populated with the existing card id.

app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java

@@ -222,6 +222,15 @@ public class LoyaltyCardViewActivity extends AppCompatActivity
             public void onClick(View v)
             {
                 Intent i = new Intent(getApplicationContext(), BarcodeSelectorActivity.class);
+
+                String cardId = cardIdFieldEdit.getText().toString();
+                if(cardId.length() > 0)
+                {
+                    final Bundle b = new Bundle();
+                    b.putString("initialCardId", cardId);
+                    i.putExtras(b);
+                }
+
                 startActivityForResult(i, SELECT_BARCODE_REQUEST);
             }
         });