WP2 BuildCompat library should track SDK INT instead of CODENAME
Bug: 132340681

Now the CODENAME is "REL"

Change-Id: Ia3c5ce623ec95fa1e69f0a8f8f3f170fcc68547f
diff --git a/src/com/android/wallpaper/compat/BuildCompat.java b/src/com/android/wallpaper/compat/BuildCompat.java
index 80bc906..9cd67c3 100755
--- a/src/com/android/wallpaper/compat/BuildCompat.java
+++ b/src/com/android/wallpaper/compat/BuildCompat.java
@@ -96,8 +96,6 @@
     }
 
     public static boolean isAtLeastQ() {
-        return Build.VERSION.CODENAME.length() == 1
-                && Build.VERSION.CODENAME.charAt(0) >= 'Q'
-                && Build.VERSION.CODENAME.charAt(0) <= 'Z';
+        return sSdk >= VERSION_CODES.Q;
     }
 }