Fix ActionBar overlay problem.

library/src/main/java/de/keyboardsurfer/android/widget/crouton/Manager.java

@@ -28,6 +28,7 @@
 import android.view.ViewGroup;
 import android.view.ViewParent;
 import android.view.ViewTreeObserver;
+import android.view.Window;
 import android.view.WindowManager;
 import android.view.accessibility.AccessibilityEvent;
 import android.view.accessibility.AccessibilityManager;
@@ -212,6 +213,7 @@ private void addCroutonToView(final Crouton crouton) {
           return;
         }
         handleTranslucentActionBar((ViewGroup.MarginLayoutParams) params, activity);
+        handleActionBarOverlay((ViewGroup.MarginLayoutParams) params, activity);
 
         activity.addContentView(croutonView, params);
       }
@@ -261,6 +263,23 @@ private void handleTranslucentActionBar(ViewGroup.MarginLayoutParams params, Act
     }
   }
 
+  @TargetApi(11)
+  private void handleActionBarOverlay(ViewGroup.MarginLayoutParams params, Activity activity) {
+    // ActionBar overlay is only available as of Android 3.0 Honeycomb.
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
+      final boolean flags = activity.getWindow().hasFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
+      if (flags) {
+        final int actionBarContainerId = Resources.getSystem().getIdentifier("action_bar_container", "id", "android");
+        final View actionBarContainer = activity.findViewById(actionBarContainerId);
+        // The action bar is present: the app is using a Holo theme.
+        if (actionBarContainer != null) {
+          final ViewGroup.MarginLayoutParams marginParams = (ViewGroup.MarginLayoutParams) params;
+          marginParams.topMargin = actionBarContainer.getBottom();
+        }
+      }
+    }
+  }
+
   /**
    * Removes the {@link Crouton}'s view after it's display
    * durationInMilliseconds.