Fix version check JNI assert, update README

README.md

@@ -53,6 +53,11 @@ Google Play Games for PC.
 The **[unity/](unity)** directory contains samples demonstrating best practices
 when targeting Android with the Unity engine.
 
+* **[unity/power_efficiency_demo](unity/power_efficiency_demo)**
+
+Sample project implementing best practices for power efficiency on Android
+when using the Unity engine for game development.
+
 ## Codelabs
 
 The **[codelabs/](codelabs)** directory contains two codelabs on learning how

unity/power_efficiency_demo/Assets/GameModeUtil.cs

@@ -29,10 +29,9 @@ public static int GetGameMode()
  	{
   		int gameMode = GameModeUnsupported;
   		AndroidJNI.AttachCurrentThread();
-
-  		var buildClass = AndroidJNI.FindClass("android.os.Build$VERSION");
-  		var sdkFieldID = AndroidJNI.GetStaticFieldID(buildClass, "SDK_INT", "I");
-  		var sdkLevel = AndroidJNI.GetStaticIntField(buildClass, sdkFieldID);
+
+	    using var version = new AndroidJavaClass("android.os.Build$VERSION");
+	    var sdkLevel = version.GetStatic<int>("SDK_INT");	    
   		if (sdkLevel < MinimumGameModeApiLevel) return gameMode;
 
   		using var unityPlayerClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");