introduce programatic flavor recognition

core/src/main/java/de/danoeh/antennapod/core/util/Flavors.java

@@ -0,0 +1,24 @@
+package de.danoeh.antennapod.core.util;
+
+import de.danoeh.antennapod.core.BuildConfig;
+
+/**
+ * Helper class to handle the different build flavors.
+ */
+public enum Flavors {
+    FREE,
+    PLAY,
+    UNKNOWN;
+
+    public static final Flavors FLAVOR;
+
+    static {
+        if (BuildConfig.FLAVOR.equals("free")) {
+            FLAVOR = FREE;
+        } else if (BuildConfig.FLAVOR.equals("play")) {
+            FLAVOR = PLAY;
+        } else {
+            FLAVOR = UNKNOWN;
+        }
+    }
+}