fix an issue on 2.3

project/Build.scala

@@ -5,8 +5,8 @@ import sbtandroid._
 import sbtandroid.AndroidPlugin._
 
 object App {
-  val version = "2.0.3"
-  val versionCode = 54
+  val version = "2.0.4"
+  val versionCode = 55
 }
 
 object General {

src/main/scala/com/github/shadowsocks/Shadowsocks.scala

@@ -466,7 +466,13 @@ class Shadowsocks
 
   def initAdView() {
     if (settings.getString(Key.proxy, "") == "198.199.101.152") {
-      val layoutView = drawer.getContentContainer.asInstanceOf[ViewGroup].getChildAt(0)
+      val layoutView = {
+        if (Build.VERSION.SDK_INT > 10) {
+          drawer.getContentContainer.asInstanceOf[ViewGroup].getChildAt(0)
+        } else {
+          drawer.getContentContainer.getParent
+        }
+      }
       if (layoutView != null) {
         val adView = {
           if (isSinglePane) {