Project/app/src/main/res/layout/activity_main.xml
@@ -1,5 +1,6 @@ <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/main_container" android:layout_width="match_parent" android:layout_height="match_parent">